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Book ; Online: Applied Modern Control

Anh Tuan, Le

2019

Keywords	Neural networks & fuzzy systems ; simulation, iot, matlab, distillation, optimal control, control system
Language	English
Size	1 electronic resource (200 pages)
Publisher	IntechOpen
Document type	Book ; Online
Note	English
HBZ-ID	HT030647790
ISBN	9781839620157 ; 1839620153
Database	ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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Book ; Online: Adaptive Robust Control Systems

Anh Tuan, Le

2018

Keywords	Automatic control engineering ; adaptive control, sliding mode control, machine learning, energy, neural networks, uav
Language	English
Size	1 electronic resource (362 pages)
Publisher	IntechOpen
Document type	Book ; Online
Note	English
HBZ-ID	HT030647421
ISBN	9789535140702 ; 9535140701
Database	ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

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Article ; Online: Which formula for corporate risk-taking around the world? Exploring happiness as the “black box”

Thao Phuong Tran / Anh-Tuan Le

Journal of Asian Business and Economic Studies, Vol 29, Iss 4, Pp 242-

2022 Volume 262

Abstract: Purpose – This paper examines how the degree of happiness affects corporate risk-taking and the moderating influence of family ownership of firms on this relationship. Design/methodology/approach – The authors use an international sample of 17,654 firm- ... ...

Abstract	Purpose – This paper examines how the degree of happiness affects corporate risk-taking and the moderating influence of family ownership of firms on this relationship. Design/methodology/approach – The authors use an international sample of 17,654 firm-year observations from 24 countries around the world from 2008 to 2016. Findings – Using the happiness index from the World Happiness Report developed by the United Nations Sustainable Development Solutions Network, the authors show that a country's overall happiness is negatively correlated with risk-taking behavior by firms. The findings are robust to an alternative measure of risk-taking by firms. Further analyses document that the negative influence of happiness on firm risk-taking is more pronounced for family-owned firms. Practical implications – The paper is consistent with the notion that happier people are likely to be more risk-averse in making financial decisions, which, in turn, reduces corporate risk-taking. Originality/value – This study contributes to the broad literature on the determinants of corporate risk-taking and the growing literature on the role of sentiment on investment decisions. The authors contribute to the current debate about family-owned firms by demonstrating that the presence of family trust strengthens the negative influence of happiness on corporate risk-taking, a topic that has been unexplored in previous studies.
Keywords	Happiness ; Risk-taking ; Family firms ; Economics as a science ; HB71-74
Subject code	330
Language	English
Publishing date	2022-11-01T00:00:00Z
Publisher	Emerald Publishing
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Finite-region stability of 2-D singular Roesser systems with directional delays

Huy Vu Le / Anh Tuan Le

Tạp chí Khoa học Đại học Huế: Khoa học Tự nhiên, Vol 130, Iss 1D (2021)

2021

Abstract: In this paper, the problem of finite-region stability is studied for a class of two-dimensional (2-D) singular systems described by using the Roesser model with directional delays. Based on the regularity, we first decompose the underlying singular 2-D ... ...

Abstract	In this paper, the problem of finite-region stability is studied for a class of two-dimensional (2-D) singular systems described by using the Roesser model with directional delays. Based on the regularity, we first decompose the underlying singular 2-D systems into fast and slow subsystems corresponding to dynamic and algebraic parts. Then, with the Lyapunov-like 2-D functional method, we construct a weighted 2-D functional candidate and utilize zero-type free matrix equations to derive delay-dependent stability conditions in terms of linear matrix inequalities (LMIs). More specifically, the derived conditions ensure that all state trajectories of the system do not exceed a prescribed threshold over a pre-specified finite region of time for any initial state sequences when energy-norms of dynamic parts do not exceed given bounds.
Keywords	Finite-region stability ; 2-D singular systems ; Roesser model ; linear matrix inequalities ; Science ; Q ; Science (General) ; Q1-390
Subject code	510
Language	English
Publishing date	2021-12-01T00:00:00Z
Publisher	HUJOS
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: An overview of the renewable energy potentials in the Mekong river Delta, Vietnam

Anh Tuan Le

Can Tho University Journal of Science (2016)

2016

Abstract: The mekong river delta is the most southern region of viet nam, having a whole year strong solar radiation and a long coastal line towards both the east sea and the west sea. The delta also is recognised as a biggest agriculture - aquaculture - mangrove ... ...

Abstract	The mekong river delta is the most southern region of viet nam, having a whole year strong solar radiation and a long coastal line towards both the east sea and the west sea. The delta also is recognised as a biggest agriculture - aquaculture - mangrove forest production of the nation, promising on her rich-biomass provision. So, this region is quite favourable for the potential development of renewable energy resources in different types and levels. Currently, all provinces of the mekong river delta depend mainly on thermal energy by burning non-renewable sources as coal, oil and gas fuels to produce electricity. These power energy plants are connecting throughout the country over nationwide grid-electricity system. Last three decades, vietnamese government has paid attention on hydropower development in the north and the central of vietnam, while the renewable energies from solar, wind, tide and biogas sources seem to be disregarded in the national and provincial socio-economic development strategy plans. However, during the past 5 years, vietnam has started to promote renewable energy development programs as part of the climate change mitigation and adaptation solutions of the national action plans, special in the southern region. This report will inventory some data figures on the regional renewable energy resources, focusing to solar, wind and rice husk energies. Additional discussion, renewable energy policies are noticed as possible solutions for the development and exploitation of cleaner powers that may be concerned.
Keywords	Climate change ; Electricity ; Mekong River Delta ; Power potentials ; Renewable energy ; Social sciences (General) ; H1-99 ; Agriculture (General) ; S1-972 ; Engineering (General). Civil engineering (General) ; TA1-2040
Subject code	910
Language	English
Publishing date	2016-07-01T00:00:00Z
Publisher	CAN THO UNIVERSITY PUBLISHING HOUSE
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Pilot application on solar energy combined electricity grid to a rural water supply station in Can Tho city

Anh Tuan Le

Can Tho University Journal of Science (2016)

2016

Abstract: Since 2008, a Clean Development Mechanism project, which can be counted towards meeting Kyoto targets, has been formed by Japan International Research Center for Agriculture Sciences and Can Tho University (JIRCAS-CTU). In this project, My Phung Hamlet, ... ...

Abstract	Since 2008, a Clean Development Mechanism project, which can be counted towards meeting Kyoto targets, has been formed by Japan International Research Center for Agriculture Sciences and Can Tho University (JIRCAS-CTU). In this project, My Phung Hamlet, My Khanh Village, Can Tho City was chosen to implement a greenhouse-gas emission reduction model. One of the activities of the project, a domestic water supply plant was surveyed, designed and installed. A part of electricity sources used for plant operation is generated by solar panels. The selection of renewable energy is to fit the objectives of JIRCAS-CTU Project. The project objective is to introduce of renewable energy for My Phung Water Supply Station by selecting one of the natural unpolluted, clean and rich energy resources such as bio-gas, wind, river flow and solar. The research has begun by surveying works, including the workshop results, water sampling and quality analysis, selection of water source alternatives, and design drawings of water supply and power application alternatives. In My Phung Hamlet’s drinking water supply plant, water input for the plant is taken by a deep groundwater well and the power for the pump supplied partly by solar energy combined electricity grid system. Finally, some recommendations after the plant construction and pipelines are given for a future greenhouse-gas emission research and management. It is found that solar energy application is a new approach for local conditions and fitting the purpose of CDM objectives. However, the cost of solar panels is still high that leads to a limitation for the implementation if the financial is shortage.
Keywords	Clean Development Mechanism ; Greenhouse-gas emission ; Solar energy ; Water supply ; Social sciences (General) ; H1-99 ; Agriculture (General) ; S1-972 ; Engineering (General). Civil engineering (General) ; TA1-2040
Subject code	690
Language	English
Publishing date	2016-07-01T00:00:00Z
Publisher	CAN THO UNIVERSITY PUBLISHING HOUSE
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Measurement investigation on the feasibility of shallow geothermal energy for heating and cooling applied in agricultural greenhouses of Shouguang City

Anh Tuan Le / Liang Wang / Yang Wang / Daoliang Li

Information Processing in Agriculture, Vol 8, Iss 2, Pp 251-

Ground temperature profiles and geothermal potential

2021 Volume 269

Abstract: The use of electrical energy for heating and cooling systems to control the temperature in greenhouses will lead to high production and product costs. To solve this problem, shallow geothermal energy as a local source of energy could be applied. In this ... ...

Abstract	The use of electrical energy for heating and cooling systems to control the temperature in greenhouses will lead to high production and product costs. To solve this problem, shallow geothermal energy as a local source of energy could be applied. In this study, a measurement model, the distribution profiles of temperature, and a preliminary assessment of the geothermal potential in the shallow zone at depths of 0.1 m to 3.6 m in Shouguang City, Shandong Province, eastern China were presented. The measurement results showed that the annual average temperature at depths of 0.1–3.6 m ranged from 13.1 °C to 17.6 °C. Preliminary assessment results of the geothermal potential showed that the daily average temperature difference between the air and at depths of 1.5–3.6 m was mainly from 10 °C to 25 °C during the winter months and between −15 °C and −5 °C during the summer months. Therefore, the heating systems could operate during January, February, November, and December. In May, June, and July, the cooling systems could be applied. Moreover, the measurement model gave good stability results, and it could be used in combination with the monitoring of the groundwater table, a survey of the thermal conductivity of the soil, climate change studies, which helps reduce unnecessary time and costs.
Keywords	Ground temperature profile ; Geothermal energy ; Ground heat exchanger ; Measurement model ; Shouguang ; Agriculture (General) ; S1-972 ; Information technology ; T58.5-58.64
Subject code	550
Language	English
Publishing date	2021-06-01T00:00:00Z
Publisher	KeAi Communications Co., Ltd.
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Latent and active tuberculosis development in patients with rheumatoid arthritis receiving biologic disease-modifying antirheumatic drugs: A single-center prospective study.

Hai, Binh Bui / Anh, Tuan Le / Thi Thu, Phuong Nguyen / Van, Hung Nguyen / Van, Giap Vu / Van, Dung Hoang

PloS one

2024 Volume 19, Issue 1, Page(s) e0295048

Abstract: Biologics have revolutionized the treatment of rheumatoid arthritis (RA) in recent years. However, data from clinical trials and actual clinical practice have shown that biologics currently in use may constitute a risk factor for reactivation of ... ...

Abstract	Biologics have revolutionized the treatment of rheumatoid arthritis (RA) in recent years. However, data from clinical trials and actual clinical practice have shown that biologics currently in use may constitute a risk factor for reactivation of tuberculosis (TB) in patients with latent TB infection. Therefore, screening for latent and active TB infection is mandatory before initiating biologic therapy in patients with RA. This prospective study aimed to analyze the clinical characteristics of patients with RA receiving biologic disease-modifying antirheumatic drugs at Bach Mai Hospital, Vietnam, between 2017 and 2022, and to identify factors affecting the occurrence of active and latent TB infection among these patients. Over a 12-month follow-up period, latent TB infection was confirmed in 20% of the total 180 included patients, while 3 (1.7%) patients developed active TB (one case of pulmonary, pleural, and gluteal TB each). History of TB risk factor exposure and lack of education were significantly associated with the occurrence of active and latent TB infection, with odds ratios (95% confidence intervals [CIs]) of 1.98 (1.78; 2.2) and 1.45 (1.31; 1.6), respectively. Follow-up duration and number of X-ray, computed tomography, bronchoscopy, and sputum acid-fast bacteria examinations were identified as factors that can aid in the early diagnosis of latent TB, with odds ratios (95% CIs) of 1.00 (1; 1.01), 1.02 (1; 1.05), 1.12 (1.11; 1.2), 1.11 (1.09; 1.2), and 1.13 (1.09; 1.17), respectively. Our study showed that, in countries with high TB burden like Vietnam, latent TB infection has high prevalence among patients with RA. We also provide useful information for the screening, monitoring, and treatment of latent and active TB infection in patients with RA.
MeSH term(s)	Humans ; Antirheumatic Agents/therapeutic use ; Arthritis, Rheumatoid/complications ; Arthritis, Rheumatoid/drug therapy ; Arthritis, Rheumatoid/epidemiology ; Biological Factors/therapeutic use ; Biological Products/therapeutic use ; Latent Tuberculosis/diagnosis ; Latent Tuberculosis/epidemiology ; Latent Tuberculosis/drug therapy ; Prospective Studies ; Tuberculosis/complications ; Tuberculosis/epidemiology ; Tuberculosis/diagnosis
Chemical Substances	Antirheumatic Agents ; Biological Factors ; Biological Products
Language	English
Publishing date	2024-01-11
Publishing country	United States
Document type	Journal Article
ZDB-ID	2267670-3
ISSN	1932-6203 ; 1932-6203
ISSN (online)	1932-6203
ISSN	1932-6203
DOI	10.1371/journal.pone.0295048
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Enhancing citrus fruit yield investigations through flight height optimization with UAV imaging

Soon-Hwa Kwon / Ki Bon Ku / Anh Tuan Le / Gyung Deok Han / Yosup Park / Jaehong Kim / Thai Thanh Tuan / Yong Suk Chung / Sheikh Mansoor

Scientific Reports, Vol 14, Iss 1, Pp 1-

2024 Volume 9

Abstract: Abstract Citrus fruit yield is essential for market stability, as it allows businesses to plan for production and distribution. However, yield estimation is a complex and time-consuming process that often requires a large number of field samples to ... ...

Abstract	Abstract Citrus fruit yield is essential for market stability, as it allows businesses to plan for production and distribution. However, yield estimation is a complex and time-consuming process that often requires a large number of field samples to ensure representativeness. To address this challenge, we investigated the optimal altitude for unmanned aerial vehicle (UAV) imaging to estimate the yield of Citrus unshiu fruit. We captured images from five different altitudes (30 m, 50 m, 70 m, 90 m, and 110 m), and determined that a resolution of approximately 5 pixels/cm is necessary for reliable estimation of fruit size based on the average diameter of C. unshiu fruit (46.7 mm). Additionally, we found that histogram equalization of the images improved fruit count estimation compared to using untreated images. At the images from 30 m height, the normal image estimates fruit numbers as 73, 55, and 88. However, the histogram equalized image estimates 88, 71, 105. The actual number of fruits is 124, 88, and 141. Using a Vegetation Index such as IPCA showed a similar estimation value to histogram equalization, but I1 estimation represents a gap to actual yields. Our results provide a valuable database for future UAV field investigations of citrus fruit yield. Using flying platforms like UAVs can provide a step towards adopting this sort of model spanning ever greater regions at a cheap cost, with this system generating accurate results in this manner.
Keywords	Medicine ; R ; Science ; Q
Subject code	571
Language	English
Publishing date	2024-01-01T00:00:00Z
Publisher	Nature Portfolio
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Antibacterial activity of a berberine nanoformulation

Hue Thi Nguyen / Tuyet Nhung Pham / Anh-Tuan Le / Nguyen Thanh Thuy / Tran Quang Huy / Thuy Thi Thu Nguyen

Beilstein Journal of Nanotechnology, Vol 13, Iss 1, Pp 641-

2022 Volume 652

Abstract: This study describes the preparation of berberine (BBR) in nanoformulation to enhance its solubility and increase its antibacterial effectiveness against hospital-acquired infections. BBR nanoparticles (BBR NPs) were formed by antisolvent precipitation ( ... ...

Abstract	This study describes the preparation of berberine (BBR) in nanoformulation to enhance its solubility and increase its antibacterial effectiveness against hospital-acquired infections. BBR nanoparticles (BBR NPs) were formed by antisolvent precipitation (ASP) using glycerol as a safe organic solvent. UV–vis absorption spectra demonstrated that the solubility of BBR NPs was greatly enhanced compared to that of pure BBR. Glycerol played a role as a stabilizer for BBR NPs through the formation of hydrogen bonds between glycerol and BBR NPs. The prepared BBR NPs have a narrow size distribution with an average diameter of 156 nm at a concentration of 2.0 mg/mL, measured by dynamic light scattering. After nanoformulation, the concentration of BBR NPs could reach up to 5.0 mg/mL, which is much higher than the saturation concentration without treatment. Results show a strongly enhanced antibacterial activity of BBR NPs compared with that of pure BBR at the same concentration. The minimum bactericidal concentration of BBR NPs against methicillin-resistant Staphylococcus aureus and Escherichia coli O157:H7 was found to be 2.0 and 5.0 mg/mL, respectively. Transmission electron microscopy showed that BBR NPs surrounded the bacterial cells and severely damaged the cell walls. Therefore, BBR NPs prepared by ASP appear to be a potential candidate for the treatment of bacterial pathogens.
Keywords	antibacterial activity ; antisolvent precipitation (asp) ; berberine nanoparticles (bbr nps) ; glycerol ; solubility ; Technology ; T ; Chemical technology ; TP1-1185 ; Science ; Q ; Physics ; QC1-999
Subject code	500
Language	English
Publishing date	2022-07-01T00:00:00Z
Publisher	Beilstein-Institut
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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