Managerial Implications for Enhancing Working Motivation and Loyalty of Workers of Enterprises in Dong Nai Province

Purpose: The article aims to assess the factors affecting employees' work motivation and loyalty in enterprises in Dong Nai province. On that basis, the authors propose managerial implications to improve employees' work motivation and loyalty at enterprises in Dong Nai province.   Theoretical framework: Motivation and loyalty is reflected in the employee's intention to stay with the organization for a long time, even when receiving a more attractive salary offer from other organizations. Work refers to the positive effects of work on each person, related to the challenges at work, the opportunity to develop personal abilities, and the enjoyment of doing the job.   Design/Methodology/Approach: Quantitative method was carried out through direct interviews with 1000 workers using a questionnaire designed based on the results of the qualitative research step. The data were processed by SPSS 20.0 and Amos software. The reliability of the scales was tested using Cronbach's Alpha reliability coefficient, EFA exploratory factor analysis, confirmatory factor analysis (CFA), and structural model analysis (SEM) in Dong Nai province from June 2022 to December 2022.   Findings: The study's contribution is to identify the factors of corporate culture, social responsibility, and management capacity to promote work motivation and employee loyalty.   Research, practical & social implications:  Classical theories are used to study work motivation, add 3 factors, find out the remaining problems, and propose management implications to improve the work motivation of employees' activities soon.   Originality/Value: The results are also scientific evidence and are essential for researchers and policymakers for businesses to apply research results to improve employee motivation and loyalty of employees

Determinants of Working Motivation and Loyalty of Workers: A Case Study of Enterprises in Dong Nai Province

Purpose: The article aims to determine factors affecting employees' work motivation and loyalty in enterprises in Dong Nai province.   Theoretical framework: Research theory on work motivation and employee loyalty. Work motivation is the motivation of people to work enthusiastically, helping them promote their inner potential and overcome challenges and difficulties to complete the work in the best way.   Design/Methodology/Approach:  The research method of this study is a combination of qualitative research methods and quantitative research methods. Qualitative research: group discussions were conducted with 30 business experts with extensive experience in human resource management and longtime business directors in Dong Nai. Quantitative analysis was carried out with an expected sample size of 1000 enterprises in enterprises, selected by convenient sampling method.   Findings: The study contributes to a new survey of the factors affecting the work motivation and loyalty of employees in enterprises in Dong Nai province as a reference for academic studies and other in the field of human resource management.   Research, practical & social implications: The research results of the research paper serve as a scientific basis for business leaders in Dong Nai province to propose reasonable policies to improve employees' work motivation and loyalty at enterprises in Dong Nai province.   Originality/Value:  The paper's originality and value help managers contribute to the study to add a suitable work motivation and loyalty model for today's Vietnamese business leaders

NGHIÊN CỨU ĐÁNH GIÁ TRƯỢT ĐẤT KHU VỰC THỪA THIÊN - HUẾ

Studying landslide hazards in Thuathien - Hue is based on the relationship between landslide and its controlling factors (topographical slope, rainfall, landuse, weathering crust, lithological properties, fault and road proximity), evaluated in a key areas. This relationship is quantified by weighting the classes in each factor and weighting each factor in a set of landslide-controlling factors. This is the bases for landslide susceptibility mapping given by integrating the weighted factor maps. The class is weighted by its landslide density, normalized on a 1-to-9 scale. The factor weighting is determined based on the landslide quantity, which would be engendered in a whole province with considering thelandslide density in each class as that obtained from the key area. The calculated results show that, influences of landslide-controlling factors in Thuathien - Hue may increase in following order: road proximity, landuse, weathering, fault, lithology, rainfall, and slope. The areas of very low, low, medium, high and very high landslide hazards accountrespectively 12,36%, 15,34%, 39,69%, 31,89% and 0,82% of province. The high and very hazards are distributed in linear form, suggesting a strong influence of faults in these areas.ReferencesAyalew L., Yamagishi H. and Ugawa N., 2004. Landslide susceptibility mapping using GIS in Tsugawa area of Agano River, Niigata Prefecture, Japan. Landslides, 1, 73-81.Ayalew L., and Yamagishi H., 2005. The application of GIS-based logistic regression for landslide susceptibility mapping in the Kakuda - Yahiko Mountains, Centrall Japan. Geomorphology 65. 15-31.Guzzetti F., Carrara A., Cardinali M. and Reichenbach P., 1999. Landslide hazard evaluation : a review of current techniques and their application in a multi-scale study, Central Italy. Geomorphology 31, 181-216.Phạm Văn Hùng, Nguyễn Xuân Huyên, 2010. Đánh giá hiện trạng và phân vùng cảnh báo nguy cơ trượt lở đất thành phố Đà Nẵng. Tạp chí Các KH về TĐ, T.32, (2), 106-113.Phạm Văn Hùng, 2011. Đánh giá hiện trạng và phân vùng cảnh báo nguy cơ trượt lở đất tỉnh Quảng Nam. Tạp chí Các KH về TĐ, T.33, 3ĐB, 518-525.Pachauri AK, Gupta PV, Chander R, 1998. Landslide zoning in a part of the Garhwal Himalayas. Environ. Geol. 36 (3-4), 325-334.Saaty Thomas, 1994. Fundamental of decision making and priority theory with analytic hierarchy process. Pittsburgh: RWS publication, 527p.Schuster R.L., 1996. Socioeconomic significance of landslides. In Landslides: investigation and mitigation, ed. A.K. Turner, R.L. Schuster, p. 12-35. Washington: National Academy Press.Shaban A., Khawlie M., Bou Kheir R., Abdallah C., 2001. Assessment of road instability along a typical moutainous road using GIS and aerial photos, Lebanon, Eastern Mediterranean. Bulletin of Engineering Geology and Environment 60, 93-101.Studying landslide hazards in Thuathien - Hue is based on the relationship between landslide and its controllingfactors (topographical slope, rainfall, landuse, weathering crust, lithological properties, fault and road proximity),evaluated in a key areas. This relationship is quantified by weighting the classes in each factor and weighting each factorin a set of landslide-controlling factors. This is the bases for landslide susceptibility mapping given by integrating theweighted factor maps. The class is weighted by its landslide density, normalized on a 1-to-9 scale. The factor weightingis determined based on the landslide quantity, which would be engendered in a whole province with considering thelandslide density in each class as that obtained from the key area. The calculated results show that, influences oflandslide-controlling factors in Thuathien - Hue may increase in following order: road proximity, landuse, weathering,fault, lithology, rainfall, and slope. The areas of very low, low, medium, high and very high landslide hazards accountrespectively 12,36%, 15,34%, 39,69%, 31,89% and 0,82% of province. The high and very hazards are distributed inlinear form, suggesting a strong influence of faults in these areas

Ecological Engineering and Restoration of Eroded Muddy Coasts in South East Asia: Knowledge Gaps and Recommendations

Ecological engineering (EE) was employed for developing strategies for stabilizing eroded muddy coasts (EMCs). However, there was a limited analysis of these EE strategies with respect to design, performance, and lessons learned. This study employed a critical review for addressing the limitations. There were four EE models designed with different restoration interventions for stabilizing EMCs. The models using active interventions have not been cost-effective in controlling erosion because the interventions failed to achieve their goals or were costly and unnecessary. Of the two passive intervention models, the one with structures constructed from onshore proved to be more cost-effective in terms of construction costs, the survival rate of transplanted seedlings, and levels of sea mud accumulation. Interventions with adequate consideration of the muddy coastal ecological processes and the ecological reasoning for the positioning of these interventions play a crucial role in stabilizing EMCs. A passive restoration model using gradually expanded interventions should be promoted in order to ensure sustainable management of EMCs in the future

Extraction of Polyphenols from Mentha aquatica Linn. var. crispa

Mentha aquatica Linn. var. crispa is commonly used as a spice in many Asian countries. Although its biological activities, such as its applications, antimicrobial properties, have been studied, its antioxidation properties have not been investigated. This study establishes the most suitable extraction conditions concerning the independent variables affecting the total polyphenol content (TPC) and antioxidant activity (AA) of M. aquatica extract (stem and leaf). Investigated factors include the type of solvent used; solvent concentration, the ratio of raw material to solvent, extraction time and extraction temperature. The efficiency of polyphenol extraction was evaluated by TPC and AA through the ability to neutralize the free radicals 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2\u27-azinobis (3-ethylbenzothiazoline-6- sulfonic acid) (ABTS), and the ferric reducing antioxidant power (FRAP) was used as the evaluation indicator. The results have shown that acetone at a concentration of 50%, at a ratio of 1:20 (w/v), extraction time of 2 h and a temperature of 40 °C give the highest values of TPC and AA, with values of 120.92 mg GAE g-1 dw for TPC, 169.36 μmol TE g-1 dw by DPPH assay, 264.03 μmol by ABTS assay, and 425.35 μmol Fe2+ g-1 dw by FRAP assay. This study demonstrates that extracts of M. aquatica can be used for research as food antioxidant

Antibacterial, antioxidant and cytotoxic activities of different fractions of acetone extract from flowers of Dipterocarpus intricatus Dyer (Dipterocarpaceae)

This study has shown for the first time the antimicrobial, antioxidant and cytotoxicity of 3 fractions of acetone extract, including hexane, chloroform and ethyl acetate from flowers of Dipterocarpus intricatus. Antibacterial test using disc diffusion method showed that the chloroform and ethyl acetate fractions inhibited the growth of all the tested bacteria, including Escherichia coli, Pseudomonas aeruginosa, Salmonella enteritidis, Salmonella typhimurium, Bacillus cereus and Staphylococcus aureus while the hexane fraction showed the antibacterial activity against B. cereus and S. enteritidis. Antioxidant activity and cancer cell resistance of those extracts were conducted using DPPH and MTT methods respectively. As a result, the DPPH radical scavenging activity of the hexane, chloroform and ethyl acetate fractions were determined with the IC50 values of 0.508, 0.22 and 0.075 mg/mL respectively while the cytotoxicity to HepG2 cell line of those fractions was 163.3 ppm, 106.7 ppm and 459.3 ppm. These results suggested the potential application of these fractions isolated from D. intricatus flowers as the natural antimicrobial, antioxidant and cytotoxic agents for medicine

NOWJ1@ALQAC 2023: Enhancing Legal Task Performance with Classic Statistical Models and Pre-trained Language Models

This paper describes the NOWJ1 Team's approach for the Automated Legal Question Answering Competition (ALQAC) 2023, which focuses on enhancing legal task performance by integrating classical statistical models and Pre-trained Language Models (PLMs). For the document retrieval task, we implement a pre-processing step to overcome input limitations and apply learning-to-rank methods to consolidate features from various models. The question-answering task is split into two sub-tasks: sentence classification and answer extraction. We incorporate state-of-the-art models to develop distinct systems for each sub-task, utilizing both classic statistical models and pre-trained Language Models. Experimental results demonstrate the promising potential of our proposed methodology in the competition.Comment: ISAILD@KSE 202

Chemical profiles and biological activities of acetone extracts of nine Annonaceae plants

This study investigated the chemical components and bioactivities of acetone leaf extracts of nine Annonaceae plants collected in the Binh Chau-Phuoc Buu Nature Reserve, Vietnam. A total of 182 constituents were identified, with linolenic acid, diaeudesmin, germacrene D, 1-octadecenoic acid, 8-(3-octyl-2-oxiranyl)-1-octanol, oleic acid, and phenylmethyl ester being the major compounds. The antimicrobial activity of the extracts was evaluated using a disc diffusion assay. Eight of the nine extracts, except for the Mitrephora thorelii extract, showed an inhibition effect against Bacillus cereus and Staphylococcus aureus. The antioxidant activity of the extracts was determined using DPPH assay, and the cytotoxic activity was deter mined using SRB assay. The results showed that the acetone extracts of Artabotrys hexapetalus, Uvularia grandiflora, Polyalthia luensis, Xylopia pierrei, Sphaerocoryne affinis, Desmos cochinchinensis, Uvaria littoralis, Mitrephora thorelii, and Goniothalamus touranensis had significant activity with IC50 for the DPPH radical scavenging activity ranging from 18.56 to 702.33 μg/mL, and the IC50 for the cytotoxic effects ranged from 5.39 to 251.77 μg/mL. Overall, the results obtained provide experimental evidence for the potential use of these plants in medicine and other related fields

Kinetic modeling of essential oil hydro-distillation from peels of pomelo (Citrus grandis L.) fruit grown in Southern Vietnam

Thorough understanding of kinetics plays a key role in improving existing industrial processes. In this study, we attempted to model the kinetics of the hydro-distillation process that produces essential oil from peels of pomelo (Citrus grandis L.) fruit, which is a product with high economic value and a wide range of applications. We first determined the optimal water-to-material ratio for attaining maximal oil yield. Then, further experimental attempts were carried out at different distillation rates to generate experimental data to fit three kinetic models, namely first-order kinetics model, instantaneous washing, followed by diffusion model and simultaneous washing and diffusion model. Overall, the three models have well described the experimental kinetic data on hydro-distillation (R2> 90%). Of which, the simultaneous washing and diffusion model attaining the R2 of 99.97% was chosen as the most suitable to describe the kinetics of the extraction process. Estimated parameters also shown that the washing stage occurs more rapidly than the later, diffusion stage. GC-MS results showed that the obtained oil sample was characterized by the dominance of the D-Limonene compound (97.873%)