Evaluating model teacher education and training at Vietnam's universities of technology and education

The traditional educational paradigm has become outdated as a result of changes in both the cultural and socioeconomic setting. A more sustainable and acceptable teacher is needed in education. A quantitative study was conducted. 95 administrators and teachers at the University of Technology and Education participated in this study with the aim of analyzing the current status of the teacher education model at the institution. According to the findings of the study, the model for educator preparation has been put into practice primarily through the processes of planning, organizing and directing activities related to educator preparation as well as inspecting and assessing the quality of education. The outcomes of the study indicate that it is essential to design educational programs that are appropriate for the present context. In particular, the study suggests that one of the most important steps towards achieving success is to incorporate technology into teaching methods. The process of educating teachers with the right degree of expertise and skills should be emphasized by educators and policymakers by developing relationships with other educational institutions and allowing teachers to participate in internships

Activities of the practice teaching organization and vocational teaching facilities in collaboration between the vocational school and units employing

The aim of this research is to evaluate the current level of preparation in the organization of practical training as well as the facilities that are available for practical vocational training. The collaboration in education between businesses and vocational schools is an effective strategy. As a result of the rapid transformation that has taken place in the socioeconomic context for professional skills and practical training among employees, a new educational strategy is required to address these demands in order to meet the needs of the workforce. A quantitative method was applied in this research. There were 570 individuals who were chosen at random. According to the findings, the majority of instructors and technicians possessed regulations for conducting practical teaching activities as well as suitable facilities and equipment for the purpose of vocational training. This study presents a number of suggestions for improving the standard of educational institutions as well as the professional growth opportunities available to teachers and lecturers. In addition, facility management and maintenance as well as optimize the instructional facilities and equipment are required

Retrieval of Aerosol Optical Depth Using Satellite Data Associated with Ground-based Observations over Urban and Rural Areas

Optičku je dubinu aerosola (AOD) moguće točno izračunati na temelju uzastopnih mjerenja izravnog i difuznog Sunčeva zračenja na tlu. Međutim, prostorna pokrivenost i frekvencija lokacije uzrokuju određena ograničenja. Stoga su satelitske snimke ispravan alat za dobivanje proizvoda optičke dubine aerosola s više prostornih informacija i obrazaca raspodjele aerosola. Daljinskim istraživanjima aerosola možemo bolje razumjeti najbolji pristup računanju optičke dubine aerosola u urbanim i ruralnim područjima i mogu se uočiti razlike zbog svojstava površinske reflektivnosti. Ovaj se članak bavi konceptima smanjenja kontrasta i pristupima tamnih meta koji se ispituju snimkama Landsata i opažanjima Sunčevog fotometra za povezivanje raspodjele optičke dubine aerosola iznad grada Taipeija u Tajvanu. Za područja sa svijetlim površinama kao što su gradovi navedeni se koncepti primjenjuju metodom koeficijenta disperzije zajedno sa Sunčevim fotometrom kako bi se u velikoj mjeri smanjile pogreške. Za razliku od toga, algoritam tamne mete s odnosom površinske refleksije između plavih (0,49 μm), crvenih (0,66 μm) i infracrvenih (2,1 μm) spektralnih pojaseva prikladan je za vlažno tlo i područja s vegetacijom. Računanje prostorne raspodjele optičke dubine aerosola uspoređuje se s proizvodima MODIS AOD-a i AERONET-a kako bi se provjerila točnost rezultata. RMSE je bio u rasponu od 0,2 do 0,4 i oko 50% podataka bilo je unutar granica očekivane pogreške (EE=± (0,05+0,15 AODsunphometer).Aerosol optical depth (AOD) can be retrieved accurately with sequential ground-based measurements of direct and diffuse solar radiance. However, spatial coverage and location frequency cause certain limitations. Hence, satellite image data are a proper tool for obtaining aerosol optical depth products with more spatial information and patterns of aerosol distribution. Currently, aerosol remote sensing may enhance our understanding of the optimal approach to AOD retrieval over urban and rural areas, and how it differs due to the characteristics of surface reflectivity. The article deals with the concepts of contrast reduction, and dark target approaches are examined using Landsat imaging and the observation of a sun photometer for integrating aerosol optical depth distribution over the city of Taipei in Taiwan. For areas with bright surfaces, such as urban areas, the above concepts were applied using the dispersion coefficient method with a sun photometer, in order to reduce errors considerably in the product. In contrast, a dark target algorithm with a relationship of surface reflectance between the blue (0.49 μm), red (0.66 μm), and infrared (2.1 μm) spectral bands is suitable for moist soils and vegetation areas. The retrieval of AOD spatial distribution is compared with MODIS AOD products and AERONET to verify the accuracy of the results. The RMSE ranged from 0.2 to 0.4, and about 50% of the data were within expected error margins (EE=± (0.05+0.15 AODsunphotometer)

Current advances in seagrass research: A review from Viet Nam

Seagrass meadows provide valuable ecosystem services but are fragile and threatened ecosystems all over the world. This review highlights the current advances in seagrass research from Viet Nam. One goal is to support decision makers in developing science-based conservation strategies. In recent years, several techniques were applied to estimate the size of seagrass meadows. Independent from the method used, there is an alarming decline in the seagrass area in almost all parts of Viet Nam. Since 1990, a decline of 46.5% or 13,549 ha was found. Only in a few protected and difficult-to-reach areas was an increase observed. Conditions at those sites could be investigated in more detail to make suggestions for conservation and recovery of seagrass meadows. Due to their lifestyle and morphology, seagrasses take up compounds from their environment easily. Phytoremediation processes of Thalassia hemprichii and Enhalus acoroides are described exemplarily. High accumulation of heavy metals dependent on their concentration in the environment in different organs can be observed. On the one hand, seagrasses play a role in phytoremediation processes in polluted areas; on the other hand, they might suffer at high concentrations, and pollution will contribute to their overall decline. Compared with the neighboring countries, the total Corg stock from seagrass beds in Viet Nam was much lower than in the Philippines and Indonesia but higher than that of Malaysia and Myanmar. Due to an exceptionally long latitudinal coastline of 3,260 km covering cool to warm water environments, the seagrass species composition in Viet Nam shows a high diversity and a high plasticity within species boundaries. This leads to challenges in taxonomic issues, especially with the Halophila genus, which can be better deduced from genetic diversity/population structures of members of Hydrocharitaceae. Finally, the current seagrass conservation and management efforts in Viet Nam are presented and discussed. Only decisions based on the interdisciplinary cooperation of scientists from all disciplines mentioned will finally lead to conserve this valuable ecosystem for mankind and biodiversity

The Endo-α(1,4) Specific Fucoidanase Fhf2 From Formosa haliotis Releases Highly Sulfated Fucoidan Oligosaccharides

Fucoidanases are endo-fucoidanases (also known as endo-fucanases) that catalyze hydrolysis of α-glycosidic linkages in fucoidans, a family of sulfated fucose-rich polysaccharides primarily found in the cell walls of brown seaweeds. Fucoidanases are promising tools for producing bioactive fucoidan oligosaccharides for a range of biomedical applications. High sulfation degree has been linked to high bioactivity of fucoidans. In this study, a novel fucoidanase, Fhf2, was identified in the genome of the aerobic, Gram-negative marine bacterium Formosa haliotis. Fhf2 was found to share sequence similarity to known endo-α(1,4)-fucoidanases (EC 3.2.1.212) from glycoside hydrolase family 107. A C-terminal deletion mutant Fhf2∆484, devoid of 484 amino acids at the C-terminus, with a molecular weight of approximately 46 kDa, was constructed and found to be more stable than the full-length Fhf2 protein. Fhf2∆484 showed endo-fucoidanase activity on fucoidans from different seaweed species including Fucus evanescens, Fucus vesiculosus, Sargassum mcclurei, and Sargassum polycystum. The highest activity was observed on fucoidan from F. evanescens. The Fhf2∆484 enzyme was active at 20–45°C and at pH 6–9 and had optimal activity at 37°C and pH 8. Additionally, Fhf2∆484 was found to be calcium-dependent. NMR analysis showed that Fhf2∆484 catalyzed hydrolysis of α(1,4) linkages between L-fucosyl moieties sulfated on C2 (similar to Fhf1 from Formosa haliotis), but Fhf2∆484 in addition released oligosaccharides containing a substantial amount of 2,4-disulfated fucose residues. The data thus suggest that the Fhf2∆484 enzyme could be a valuable candidate for producing highly sulfated oligosaccharides applicable for fucoidan bioactivity investigations

Analysis organization and operational services of the Haiphong's port

Tato bakalářská práce se zabývá charakteristikou přístavu Haiphong ve Vietnamu a jeho infrastrukturou i používanými technologickými systémy. Dále se soustřeďuje na analýzu současných hlavních úkolů a provozních procesů v přístavu. Zároveň je věnována zmínka dosahovaným úspěchům přístavu v současné době i jeho problémům v provozním procesu s návrhy řešení.This bachelor thesis deals with characteristic of the Haiphong's port in Vietnam also infrastructure and technology systems which are used in this port. Further is focus on analysis of current main function and operational process in port. Herewith mention not only in port's achieved prosperities but also in its problems in operational process with proposals of solution.Katedra dopravního managementu, marketingu a logistikyStudentka přednesla ucelenou a logicky uspořádanou obhajobu své bakalářské práce. V ní dokázala přesvědčivým způsobem obhájit závěry svých řešení. U doplňkových otázek prokázala schopnost logického myšlení, pohotové reakce, jasného a srozumitelného vysvětlení.Dokončená práce s úspěšnou obhajobo