65-74 aastaste vietnamlaste suutervis ja alalõualiigese haiguslikud seisundid

Väitekirja elektrooniline versioon ei sisalda publikatsiooneTervest suust räägitakse siis, kui näo ja lõualuude piirkonnas ei ole valu, hambakaariest, põletikulisi protsesse, kasvajaid, teisi haigusi ega normist kõrvalekaldeid, mis halvendaksid mälumis- ja kõnefunktsiooni ning psühhosotsiaalset heaolu. Eakate inimeste osakaal ühiskonnas suureneb pidevalt paljudes riikides. Vananeva ja nõrgestatud inimese suu tervist võivad mõjutada mitmed riskitegurid. Näo-lõualuude süsteemi tervis oleneb ka hambumusest ja alalõualiigeste seisundist. Erinevate alalõualiigese anatoomiliste ja funktsionaalsete haiguslike seisundite ühisnimetajaks on temporomandibulaarliigese e. alalõualiigese haiguslikud seisundid (TMD). Vietnami eakad on elanud üle Vietnami sõja (1945–1975). Erinevad majandusmudelid ja globaalsed muutused on mõjutanud nende tervist sh. suutervist ja elukvaliteeti. Käesoleva uuringu eesmärkideks oli kirjeldada vanemaealiste vietnamlaste suutervise seisundit ja suutervise käitumist, alalõualiigese haiguslikke seisundeid ja oklusioonikontaktide mõju näokolju struktuuridele ning uurida näokolju morfoloogia ja TMD vahelisi seoseid. Uuringusse kaasati mitmeastmelise juhusliku kihtvaliku meetodit rakendades Danangi piirkonnast 258 vietnamlast vanuses 65-74 aastat. Kliiniline uuring hammaste kõvakudede ja tugikudede seisundi hindamiseks teostati vastavalt Maailma Terviseorganisatsiooni soovitatud indekseid ja metoodikat kasutades. Alalõualiigese haigusi diagnoositi kasutades alalõualiigese haiguste diagnostika kriteeriume. Hambumust hinnati Eichner’s klassifikatsiooni järgi, milles on hambakaar jagatud oklusioonikontaktide põhjal neljaks tsooniks, eakate inimeste näokolju muutusi hinnati tsefalomeetriat kasutades. Uuritutest 97.7% diagnoositi hambakaariest, 83,3% parodondi haigusi ja 56,6% alalõualiigese haiguslikke seisundeid, milliste hulgas prevaleerusid diski asendi häire ja liigese degeneratiivsed muutused. Umbes 16% uuritutest ei olnud ühtegi töötavat hambapaari e. oklusioonikontakti. Risk alalõualiigeste haigestumiseks oli 3,36 korda kõrgem ühepoolse (95% CI = 1,21–9,36, P = 0,020) ja 2,71 korda kahepoolse (95% CI = 1,12–6,56, P = 0,027) oklusioonikontaktide kaotuse korral. Puudulik oklusioonikontaktide arv põhjustab muutusi ala – ja ülalõualuu tasandil ja struktuuris. Muutused mandibulaarsetes struktuurides olid statistiliselt oluliselt seotud alalõualiigese haiguslike seisundite tekkega (P < 0,05). Saadud informatsioon omab väärtust Vietnami tervishoiusüsteemis suutervise alase ennetustegevuse ja aktiivse ravi planeerimisel.Oral health is a state of being free from mouth and facial pain, oral and throat cancer, oral infection and sores, periodontal disease, tooth decay, tooth loss, and other diseases and disorders that limit an individual’s capacity of biting, chewing, smiling, speaking, and psychosocial well-being. Health of the stomatognathic system is also related to the status of dental occlusion and temporomandibular structures. The variation in the conditions affecting the anatomic and functional characteristics of temporomandibular structures is known as temporomandibular disorders. The Vietnamese elderly have experienced the Vietnam War (1945–1975) and different economic systems. These upheavals could affect their oral status. The aims of the dissertation were to study oral health status, temporomandibular disorders (TMD), and the role of occlusal support in relation to TMD and the craniofacial structure in the Vietnamese elderly aged 65–74 years. The cross-sectional study covered 258 participants living in Danang, Vietnam. Clinical examination of teeth and the surrounding tissues was performed according to the recommendations of the WHO. Diagnosis of TMD was based on the Diagnostic Criteria for Temporomandibular Disorders; occlusal supports were analysed by using the Eichner classification; cephalometric measurements were used to evaluate the alterations in the craniofacial structures of the elderly. Of the sample, 97.7% had experienced dental caries, 83.3% had periodontal diseases, and 56.6% had TMD. Disc displacement and degenerative joint disease were most prevalent among the elderly Vietnamese. Approximately 16% of the elderly did not have any occlusal supports, the odds of having TMD were positively associated with total unilateral loss of occlusal support (OR = 3.36, 95% CI = 1.21–9.36, P = .020) and total bilateral loss of occlusal supports (OR = 2.71, 95% CI = 1.12–6.56, P = .027). The higher is the number of lost occlusal support zones, the more significant are the changes in the craniofacial structures. The alteration of angles formed by the mandibular plane, gonial angle, cranial base angle, effective mandibular length, and anterior facial height were significantly associated with TMD signs (P < .05). The study suggests that an oral health care programme is required to improve the oral health status of the elderly Vietnamese

The trend of using smart teaching devices in education in Vietnam

This study examines the growing integration of intelligent educational tools within the educational framework of Vietnam, underscoring the nation's swift shift towards a technology-centered learning environment. With 72.1 million internet users in Vietnam, marked by a 98.1% adoption rate of smartphones, 58.8% usage of laptops, and 35.5% ownership of tablets, these sophisticated devices have assumed a central role in the field of education. Notably, there exist governmental initiatives aimed at reinforcing the legal infrastructure, serving as a testament to Vietnam's dedication to advancing education through technological means. Smart educational devices have brought about a transformation in teaching techniques, rendering lessons more captivating, efficient, and accessible. The authors conducted a survey among a randomly selected group of 255 participants, revealing that the entire cohort utilizes smart devices for educational or work-related purposes. Nonetheless, certain students tend to employ smartphones for entertainment, which has raised inquiries regarding their scholastic impact. The paper explores the role of laptops, accentuating their revolutionary contribution to education and the necessity for further investigation to gain deeper insights into their effects. Furthermore, it investigates the obstacles encountered, encompassing technology-related distractions in educational contexts and disparities in technology access. Ultimately, this research underscores the significance of addressing these impediments to fully exploit the potential of intelligent educational devices in Vietnam's educational landscape, with the added benefit of drawing comparisons with global trends to glean valuable insights for further enhancing the educational domain

THE APPLICATION OF FOOTWORK EXERCISES TO IMPROVE PHYSICAL FITNESS FOR FEMALE BADMINTON ATHLETES

The purpose of this study was to find out the footwork exercises to improve physical fitness for female badminton athletes at Saigon University. 24 female badminton athletes volunteered and were selected who were divided randomly into two groups (12 athletes in the experimental and 12 athletes in the control group). 04 evaluation tests were selected to identify the physical fitness of female badminton athletes, such as the jump rope, back and forth repetitions, left and right across the court, and B endurance (quickly touch 4 points). The 20-footwork exercise was selected and applied to the experimental group, while the control group practiced according to a pre-determined 15-week training program. The results indicated that there were significant differences between before and after the experimental (after the application of the 20-footwork exercise) in all evaluation tests. Therefore, the application of the 20-footwork exercise had better physical development in wrist strength, sideways reaction, front-back reaction, and speed endurance in the experimental group than in the control one. In conclusion, footwork exercises for female athletes in badminton were really effective for improving physical fitness and might be added to annual training for the next training periods.  Article visualizations

Production networks in the wind turbine industry, which place for developing countries in East Asia?

International audienceMy doctoral research intersects two recent developments of the global economy. The first is the emergence of the wind turbine industry, to provide the machines for climate-friendly electricity generation. The second is the increasing importance of production networks in East Asia. Production networks are defined by the cross-border dispersion of component production/assembly within vertically integrated production processes. In industries where a production network pattern is in place, each country specializes in a particular stage of the production sequence. The ultimate goal of my research is to understand which factors determine the participation of East Asia developing countries in wind turbine industry’s production network. The findings from this research will broaden our understanding on production networks and its policy implications for developing countries in East Asia, Vietnam in particular. This first-year poster presents four preliminary trade data analysis results. A) Except for a unique decline in 2009, the extent of the wind turbine network had been expanding during the period 2007-2014. B) The network was intra-regional rather than inter-regional. C) Europe was the largest one followed by Asia. D) Developing countries in East Asia only account for minor share of the network. Next, these findings will be confronted to the existing theoretical concept models based on neo-classical trade theory; industrial organization theory and global value chain theory. In the following years, such quantitative international trade analysis will be completed by qualitative sector surveys, most likely in Europe

Exotic States Emerged By Spin-Orbit Coupling, Lattice Modulation and Magnetic Field in Lieb Nano-ribbons

The Lieb nano-ribons with the spin-orbit coupling, the lattice modulation and the magnetic field are exactly studied. They are constructed from the Lieb lattice with two open boundaries in a direction. The interplay between the spin-orbit coupling, the lattice modulation and the magnetic field emerges various exotic ground states. With certain conditions of the spin-orbit coupling, the lattice modulation, the magnetic field and filling the ground state becomes half metallic or half topological. In the half metallic ground state, one spin component is metallic, while the other spin component is insulating. In the half topological ground state, one spin component is topological, while the other spin component is topological trivial. The model exhibits very rich phase diagram

Black-box modeling of nonlinear system using evolutionary neural NARX model

Nonlinear systems with uncertainty and disturbance are very difficult to model using mathematic approach. Therefore, a black-box modeling approach without any prior knowledge is necessary. There are some modeling approaches have been used to develop a black box model such as fuzzy logic, neural network, and evolution algorithms. In this paper, an evolutionary neural network by combining a neural network and a modified differential evolution algorithm is applied to model a nonlinear system. The feasibility and effectiveness of the proposed modeling are tested on a piezoelectric actuator SISO system and an experimental quadruple tank MIMO system

Bake hardening effect of the low strength interstitial free steel

This paper investigates the influence of pre-strain and temperature on the bake hardening (BH) effect of the low strength interstitial free (IF) steel with the yield strength of 137 MPa. The tensile specimens were pre-strained to 2-4-6 % at room temperature followed by baking at temperatures of 150-200-250 oC for 20 minutes. The BH strength was determined by a standard procedure based on the difference between the lower yield strength of the baked specimen and the flow stress of the initial one. The microstructure of the IF steels was characterized by optical microscopy and scanning electron microscopy for the purpose of explaining the BH effect. All the initial and baked steels show a microstructure that includes the ferrite phase, of an average grains size of 45 µm. This observation was consistent with the mechanical properties of the initial steel. The BH strengths have been achieved from 12 to 35 MPa, in which the maximum value was found for the specimen that pre-strained to 6 % and baked at 200 oC. The BH strengths increased with increasing the pre-strain, but slightly decreased when the baking temperature was 250 oC. This mechanism is attributed to pinning of dislocation by carbon solute atoms during the baking process, and the BH strength was correlated with grain boundary segregation

SOLUTIONS TO IMPROVE STUDENTS' SATISFACTION IN PHYSICAL EDUCATION COURSES

The purpose of this study was to find out the solutions to improve students' satisfaction in physical education courses at Saigon University. 1378 students participated in physical education courses (such as football, volleyball, table tennis, basketball, and badminton) in the academic year 2021-2022 has been conducted by using questionnaires to survey. Through the steps of the analysis of strengths, weaknesses, opportunities, threats in teaching process, expert consultation, combined with experimental process based on 7 factors, i.e. facilities, lecturers, training program, the implementation, support process, problem responsiveness and expected results. Results had selected and applied 08 solutions to improve the satisfaction level of students at Saigon University after participating in physical education courses. In short, the application of the solutions has contributed to improving the satisfaction level of students after participating in the physical education courses.  Article visualizations

Enhance Incomplete Utterance Restoration by Joint Learning Token Extraction and Text Generation

This paper introduces a model for incomplete utterance restoration (IUR). Different from prior studies that only work on extraction or abstraction datasets, we design a simple but effective model, working for both scenarios of IUR. Our design simulates the nature of IUR, where omitted tokens from the context contribute to restoration. From this, we construct a Picker that identifies the omitted tokens. To support the picker, we design two label creation methods (soft and hard labels), which can work in cases of no annotation of the omitted tokens. The restoration is done by using a Generator with the help of the Picker on joint learning. Promising results on four benchmark datasets in extraction and abstraction scenarios show that our model is better than the pretrained T5 and non-generative language model methods in both rich and limited training data settings. The code will be also available.Comment: This is the early version of the paper accepted by NAACL 2022. It includes 10 pages, 2 figure