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A Complex Fuzzy LSTM Network for Temporal-Related Forecasting Problems

Computers, Materials & Continua 2024年第9期80卷 4173-4196页

作者： Nguyen Tho Thong Nguyen Van Quyet Cu Nguyen Giap Nguyen Long Giang luong thi hong lan Institute of Information Technology Vietnam Academy of Science and TechnologyHoang Quoc VietCau GiayHanoi100000Vietnam Academic Affairs Department Thai Nguyen University of EducationThai Nguyen250000Vietnam Center of Science and Technology Research and Development Thuongmai UniversityHo Tung MauCau GiayHanoi100000Vietnam Faculty of Information Technology Hanoi University of IndustryBac Tu LiemHanoi100000Vietnam

Time-stamped data is fast and constantly growing and it contains significant information thanks to the quick development ofmanagement platforms and systems based on the Internet and cutting-edge information communication *** the time series data including time series prediction has many practical *** new techniques were developed for use with various types of time series data in the prediction *** those,this work suggests a unique strategy to enhance predicting quality on time-series datasets that the timecycle matters by fusing deep learning methods with fuzzy *** order to increase forecasting accuracy on such type of time-series data,this study proposes integrating deep learning approaches with fuzzy ***,it combines the long short-termmemory network with the complex fuzzy set theory to create an innovative complex fuzzy long short-term memory model(CFLSTM).The proposed model adds a meaningful representation of the time cycle element thanks to a complex fuzzy set to advance the deep learning long short-term memory(LSTM)technique to have greater power for processing time series *** on standard common data sets and real-world data sets published in the UCI Machine Learning Repository demonstrated the proposedmodel’s utility compared to other well-known forecasting *** results of the comparisons supported the applicability of our proposed strategy for forecasting time series data.

关键词： Complex fuzzy set long short-term memory(LSTM) CFLSTM T-CFLSTM

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Is convenience really king? Comparative evaluation of catastrophic costs due to tuberculosis in the public and private healthcare sectors of Viet Nam: a longitudinal patient cost study

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贫困所致传染病(英文) 2024年第2期13卷 17-28页

作者： Nguyen Hoa Binh Quang Vo Luan Nguyen Forse Rachel Jeanette Wiemers Anja Maria Christine Huynh Huy Ba Dong Thuy thi Thu Phan Yen thi Hoang Creswell Jacob Dang thi Minh Ha Nguyen lan Huu Shedrawy Jad L?nnroth Knut Nguyen Tuan Dinh Van Dinh luong Annerstedt Kristi Sidney Codlin Andrew James National Lung Hospital Ha Noi Viet Nam Friends for International TB Relief Ha Noi Viet Nam Department of Global Public Health WHO Collaboration Centre On Tuberculosis and Social Medicine Karolinska Institute Stockholm Sweden Stop TB Partnership Geneva Switzerland Pham Ngoc Thach Hospital Ho Chi Minh City Viet Nam

Background In Viet Nam, tuberculosis (TB) represents a devastating life-event with an exorbitant price tag, partly due to lost income from daily directly observed therapy in public sector care. Thus, persons with TB may seek care in the private sector for its flexibility, convenience, and privacy. Our study aimed to measure income changes, costs and catastrophic cost incurrence among TB-affected households in the public and private *** Between October 2020 and March 2022, we conducted 110 longitudinal patient cost interviews, among 50 patients privately treated for TB and 60 TB patients treated by the National TB Program (NTP) in Ha Noi, Hai Phong and Ho Chi Minh City, Viet Nam. Using a local adaptation of the WHO TB patient cost survey tool, participants were interviewed during the intensive phase, continuation phase and post-treatment. We compared income levels, direct and indirect treatment costs, catastrophic costs using Wilcoxon rank-sum and chi-squared tests and associated risk factors between the two cohorts using multivariate *** The pre-treatment median monthly household income was significantly higher in the private sector versus NTP cohort (USD 868 vs USD 578;P=0.010). However, private sector treatment was also significantly costlier (USD 2075 vs USD 1313;P=0.005), driven by direct medical costs which were 4.6 times higher than costs reported by NTP participants (USD 754 vs USD 164;Pthis resulted in no significant difference in catastrophic costs between the two cohorts (Private: 55% vs NTP: 52%;P=0.675). Factors associated with catastrophic cost included being a single-person household [adjusted odds ratio [(aOR=13.71; 95% confidence interval (CI): 1.36–138.14;P=0.026], unemployment during treatment (aOR=10.86; 95%CI: 2.64–44.60;P<0.001) and experiencing TB-related stigma (aOR=37.90; 95%CI: 1.72–831.73;P=0.021).Conclusions Persons with TB in Viet Nam face similarly high risk of catastrophic costs whether treated in the

关键词： Tuberculosis Patient cost Catastrophic cost Private sector Comparative analysis Viet Nam

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Theoretical basis of a beneficial role for vitamin D in viral hepatitis

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World Journal of Gastroenterology 2012年第38期18卷 5338-5350页

作者： Khanh vinh quoc luong lan thi Hoàng Nguyen Vietnamese American Medical Research Foundation WestminsterCA 92683United States

Abnormal bone metabolism and dysfunction of the calcium-parathyroid hormone-vitamin D axis have been reported in patients with viral hepatitis. Some studies suggested a relationship between vitamin D and viral hepatitis. Genetic studies have provided an opportunity to identify the proteins that link vitamin D to the pathology of viral hepatitis (i.e., the major histocompatibility complex class Ⅱ molecules, the vitamin D receptor, cytochrome P 450 , the renin-angiotensin system, apolipoprotein E, liver X receptor, toll-like receptor, and the proteins regulated by the Sp1 promoter gene). Vitamin D also exerts its effects on viral hepatitis via non-genomic factors, i.e., matrix metalloproteinase, endothelial vascular growth factor, prostaglandins, cyclooxygenase-2, and oxidative stress. In conclusion, vitamin D could have a beneficial role in viral hepatitis. Calcitriol is best used for viral hepatitis because it is the active form of the vitamin D 3 metabolite.

关键词： Calcitriol Hepatitis Hepatitis B virus Hepatitis C virus Vitamin D

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Morphological Change in the Northern Red River Delta,Vietnam

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Journal of Ocean University of China 2018年第6期17卷 1272-1280页

作者： BUI Vuong Van FAN Daidu NGUYEN Dac Ve TRAN Dinh lan TRAN Duc Thanh HOANG Van Long NGUYEN thi hong Hanh Institute of Marine Environment and Resources Vietnam Academy of Science and TechnologyHaiphong 18000Vietnam State Key Laboratory of Marine Geology Tongji UniversityShanghai 200092China Hanoi University of Mining and Geology Hanoi 10000Vietnam Graduate University of Science and Technology Vietnam Academy of Science and TechnologyHanoi 10000Vietnam

Coastal erosion has become a worldwide concern, typically in the densely populated Asian mega-river deltas. Severe coastal erosion in the southern Red River Delta(RRD) has been intensively studied. Coastal morphological change in the northern RRD was examined in detail through DEM(Digital Elevation Model) analysis based on time series of bathymetrical maps(1965–2004) and landsat images(1975–2015) in this study. The results show that the northern RRD is featured by rapid coastal accretion in the past few decades, although suspended sediment flux has dropped by roughly 60% after the completeness of Hoa Binh Dam(HBD) in 1988 and relative sea level rose at 1.9 mm yr^(-1). However, accretion at the outer part of subtidal shoals and platforms was observed to slow down quickly or even turned into erosion in the last two decades. The resuspended sediments from the erosion zone can be transported landward to replenish the inner coastal zone, keeping the latter accretion in the near future to compensate for the sediment discharge decrease from the river. However, this lag effect should be terminated soon if other adverse effects go worse, e.g., damming rivers, sea-level rising, strengthening storms, land reclamation and other poor-designed coastal engineering. Coastal planners and managers should pay full attention to these changes.

关键词： Morphological change DEM coastal erosion coastal engineering coastal management tide-dominated Red River Delta

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The Impact of thiamine Treatment on Generalized Anxiety Disorder

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International Journal of Clinical Medicine 2011年第4期2卷 439-443页

作者： Khanh vinh quoc luong lan thi Hoang Nguyen Vietnamese American Medical Research Foundation WestminsterUSA

Objective: Patients with generalized anxiety disorder (GAD) are fearful. They constantly worried about minor matters, and they anticipate the worst. The GAD is diagnosed when a patient experiences excessive anxiety and worry for at least 6 months. The cause of GAD is unknown. In the present paper, we discuss patients with GAD who have low levels of thiamine in their bloods. We also discuss the role of thiamine in the pathogenesis and treatment of GAD. Methods: We examined 9 patients (6 males and 3 females) who met the DSM-IV-TR diagnostic criteria for GAD. These patients had no history of alcoholism. Their ages ranged from 57 to 83 years old (mean age –72.8 ± 2.9 years). All of the patients had low blood thiamine levels (mean –25.1 nmol/L ± 6.0 nmol/L;normal level—70 nmol/L - 180 nmol/L). Participants completed the Hamilton Anxiety Rating Scale (HARS) for anxiety before and after thiamine treatments. All of the patients received daily thiamine 100 mg intramuscularly. Results: thiamine supplementation significantly improved HARS scores, increased both appetite and general well-being, and reduced fatigue in patients with GAD. Interestingly, these patients were able to discontinue taking anxiolytic and β-blocker medications. Conclusion: Parental thiamine significantly affects patients with GAD.

关键词： thiamine General Anxiety Disorder Vitamin B_(1) Anxiety

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A New Approach for Heavy N-Doping Process in Ge Epilayers Using Specific Solid Source

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Optics and Photonics Journal 2018年第2期8卷 11-19页

作者： luong thi Kim Phuong hong Duc University Thanh Hoa City Viet Nam

As an indirect band gap material, Germanium (Ge) has low efficiency of radiative recombination in the wavelength area of about 1550 nm. However, the difference between the direct and indirect band gap is very small (~140 meV) and photoluminescence emission ability of Ge could be greatly enhanced by heavy n-doping process. In this work, Ge growth directly on Si (001) substrate by molecular beam epitaxial (MBE) technique and a high n-doping level in Ge was obtained owning to using GaP decomposition source. The GaP solid source produces P2 molecules instead of P4 molecules, which have higher sticking coefficient than that of P4 comparing to the traditional doping method from PH3 gas precursor molecules. The dependence of optical property on Ge film thickness is also studied. The out-diffusion phenomenon of phosphorus dopant has been observed through SIMS profile analysis. An activated phosphorus concentration can be achieved up to more than 2 × 1019 atoms?cm&minus3 confirmed by Hall effect measurement. this result contributes to realization of Ge-on-Si devices for optoelectronic applications.

关键词： Germanium Heavy N-Doping GaP Source Photoluminescence Optoelectronic Applications

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Research on Dyeing Process for Polyamide with Aqueous Extracted from the Fruits of Diospyros Mollis

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Journal of Environmental Science and Engineering(B) 2016年第8期5卷 385-389页

作者： hong Phuong Pham thi Linh Hoang thi TrungKien Tran Thu lan Nguyen thi Chemical Engineering Faculty Industrial University of rio Chi Minh City HCMC 7000000 Vietnam Faculty of Technology of Textile and Fashion Hung Yen University of Technology and Education Hung Yen Province 160000Viemam School of Chemical Engineering Hanoi University of Science and Technology Ha Noi City 100000 Vietnam Faculty of Textiles and Leather University of Economic and Technical Industries Ha Noi City 100000 Vietnam

In this study, polyamide fabrics were dyed with aqueous extracts from Diospyros Mollis fruits. The aqueous extracts from Diospyros Mollis fruits were extracted with water solution at room temperature and a ratio of 1：5 for Diospyros Mollis to water. The influences of temperature in range of 50-100 ℃, time in range of 30-80 minutes and a ratio of aqueous extracts to water in range of 3/1-1/11 were investigated. The results showed that the aqueous extracts from Diospyros Mollis fruits could dye polyamide fabrics to have black color with color strength and fastness properties to be very good level of 4-5.

关键词： Polyamide natural dyes Diospyros Mollis fruit.

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Coexistence of the Hypersecretion of Catecholamine,Adrenal Cortical Nodular Hyperplasia,and Nephrotic-Range Proteinuria of Focal Segmental Scleronephrosis:Is It Fat-Induced Hypertension?

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International Journal of Clinical Medicine 2011年第3期2卷 206-211页

作者： Khanh vinh quoc luong lan thi Hoang Nguyen Si van Nguyen Ninh T.Nguyen Vietnamese American Research Foundation WestminsterUSA Department of Pathology/Garden Grove Medical Center Garden GroveUSA Department of Surgery/UCI Medical Center OrangeUSA

Two patients had a long history of hypertension and one of them also had a nephrotic-range proteinuria secondary to focal segmental scleronephrosis which had been diagnosed by kidney biopsy. They presented with uncontrolled hypertension. Laboratory examination suggested hypersecretion of catecholamines by the left adrenal glands in both patients and primary aldosteronism in one of them. A computed tomography scan revealed small nodules on left adrenal gland in both patients. Patients underwent laparoscopic left adrenalectomy. After surgery, blood pressure was normalized and proteinuria was resolved. Most interestingly, prominent adipocytes infiltrated were detected in the adrenal cortex and were associated with the presence of lymphocytes, which suggested that adipocytes might have a role in the pathogenesis of these diseases in our patients.

关键词： Pheochromocytoma Aldosteronism Adipocyte Nephrotic Syndrome Focal Segmental Scleronephrosis Adrenal Cortical Hyperplasia

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Study the Changes in Soil Organic Carbon of Rice-Maize Cropping System in the Top Layer of Alluvisol Soil in Dan Phuong: A Study of C-13 Stable Isotope Composition (δ13C)

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Journal of Environmental Protection 2019年第10期10卷 1361-1372页

作者： Nguyen thi hong thinh Vu Hoai Ha lan Anh Vo thi Anh Truong Viet Chau Trinh Van Giap Tran Minh Tien Isotope Hydrology Laboratory Institute for Nuclear Science and TechnologyHanoiVietnam Soils and Fertilizers Research Institute HanoiVietnam

In this study, the experiments on field were conducted to examine the change in the content of soil organic carbon (SOC), its C-13 stable isotope composition (δ 13C) and some main physical, chemical parameters (soil moisture, pH, soil density, content of humic, fulvic, total N, total P, total K) in alluvial soil of Dan Phuong region—Vietnam at a depth of 0 - 30 cm when we changed the regime from 2 maize -1 rice crop to 2 rice - 1 maize crop per 1 year. In addition to analyzing the main parameters in soil, C content and its δ 13C value in parts of rice and maize (root, stem and leaf) were also analyzed to assess the contribution of plant residues on soil organic carbon content after harvest. The experiment was carried out in 2016-2017 on the field with the traditional farming method of local farmers along with the tropical monsoon weather conditions of the North-Vietnam. The results showed that SOC had positive correlation with total N, total P parameters and negative correlation with δ 13C values of soil samples at two layers (0 - 15 cm and 15 - 30 cm). The average of total dry biomass (stem, stump + roots and leaf parts) per 1 rice and 1 maize crop was 10.64 Mg/ha and 9.09 Mg/ha, respectively. The average of δ 13C value of rice (C3 plant) was -29.78‰ and its value of maize (C4 plant) was -12.61‰. The new plant (rice) contributes to the total soil organic carbon content from 11.31% to 44.14% at the 0 - 15 cm layer and from 6.55% to 11.31% at the 15 - 30 cm layer in one-year experiment period.

关键词： Soil Organic Carbon (SOC) C-13 Stable Isotope Maize and Rice Crop Soil Properties

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Nexus between CO₂ Emissions and Economic Growth, Industrial Production, and Foreign Direct Investment in Vietnam: Symmetric ARDL Approach

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Journal of Environmental Protection 2023年第8期14卷 637-659页

作者： Le Phuong Nam Ho thi Hien Nguyen Van Song Nguyen Manh Hieu Dao Thu Tra Nguyen thi luong Department of Resource and Environmental Economics Vietnam National University of Agriculture (VNUA) Hanoi Vietnam Department of Economics Nghe An University of Economics (NAUE) Vinh City Vietnam Department of Economics Hong Duc University (HDU) Thanh Hoa City Vietnam Department of Finance and Banking Can Tho University (CTU) Can Tho City Vietnam

Vietnam’s economy has been developing strongly in recent years;however, it is necessary to examine the impact of its economic activities on environmental quality. this study aims to evaluate the relationship between CO2 emissions and economic growth, industrial production, and foreign direct investment (FDI) in Vietnam. The ARDL estimation was used to process the dataset from World Bank. Results showed that economic growth, industrial production, and FDI have an impact on CO2 emissions in the long run in Vietnam. Granger Causality test also indicated that there is a causal relationship between economic growth, industrial production, and CO2 emissions in Vietnam from 1990 to 2018, at 5% statistical significance level. Proposed solutions to reduce CO2 emissions but still promote economic growth toward the green growth orientation and zero carbon target attainment are as follows: 1) reduce the use of fossil energy in industrial manufacturing and replace it by renewable energy sources;2) use modern technology for all production sectors in economy;and 3) develop a legal framework for FDI projects selection and choose foreign investors with modern and low carbon emission technology.

关键词： Economic Growth C O2 Emission FDI ARDL Environmental Kuznets Curve (EKC)

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