STRUCTURE, ELECTRICAL PROPERTIES, AND APPLICATION POSIBILITY AS SOLID OXIDE FUEL CELLS CATHODE MATERIALS OF (La2NiO4±δ)1-x(BaTiO3)x(x=0.0-0.5) COMPOSITES

(La2NiO4±δ)1-x(BaTiO3)x (LNO/BTO), x=0.0, 0.05, 0.2, 0.3, 0.5 composites were prepared and investigated in structure and electrical properties. Single phase La2NiO4±δ component was obtained by sintering at 1000 oC during 12 h in air. Electrical conductivity was measured by 4-point probe method in wide temperature region above room temperature. Experiment showed that the highest conductivity was obtained in x=0.3 composite sample. Glass shell-nanocrystallite core structure of grains plays important role for this conducting enhancement. Conducting behavior of composites change from metal to semiconductor in the temperature interval of 400 to 700 oC. The LNO/BTO systems with acceptable electrical conductivity in such temperature interval are suitable for making cathode materials in solid oxide fuel cells

Active Teaching Techniques for Engineering Students to Ensure The Learning Outcomes of Training Programs by CDIO Approach

Recent research results show that students' ability to absorb and apply lessons increases when they are actively learning. In the innovative teaching method, learners - objects of teaching activities as well as subjects of learning activities - are attracted to active learning activities organized and instructed by teachers. By this way, learners are self-reliant to discover what they do not know, not passively absorb the knowledge arranged by the teacher. Placed in situations of real life, learners experience, directly observe, discuss, experiment, solve problems posed by their thinking, both working in groups, thereby gaining new knowledge, new skills, promoting creative potential. Depending on the objectives of the specific subject, which level of knowledge or skill needs to be achieved according to the CDIO approach, the lecturer will organize appropriate activities to help students actively learn to achieve the goals. The paper explores and evaluates innovative teaching methods to help students actively learn and experience to achieve the subject’s goals and training program following the CDIO approach, as well as meet the requirements of society

CROSS-BANK IMPACT OF OPERATIONAL LOSS ANNOUNCEMENTS IN BANKS IN EMERGING AND DEVELOPING COUNTRIES

The purpose of this paper is to assess the interaction of the banking system and the extent to which it affects banks' disclosure in emerging and developing countries in terms of operating loss events to market values. It primarily focuses on the banking system in emerging and developing countries as the market evolves with the regulation of operational risk in the financial sector, especially the financial crisis of 2008-2010. This study is limited by the disclosure of financial losses and the level of public information on the stock market. In this article that uses a synthetic database from FitchRisk refers to all bank risk events in some emerging and developing countries in the period from 2010 to 2016 causing losses about activity with the actual damage amount of at least $10 million. Examining market dynamics with the behaviour of the banking system will give us some hints about the importance of key macroeconomic factors in policymaking. In that sense, now with the growth of the banking system, and the degree of their influence on the economy, there is a great deal to learn about the impact of banks in emerging and developing countries announcing event loss on market value is a necessary issue

Theoretical Framework on the Role of Knowledge Management for Students on Academic Performance

Knowledge management is a developing sector that has received lots of consideration and support from the community which is industrial. Knowledge management is a young academic field which has not been built up a systematized and unified framework. This paper reviews the role of knowledge management for students on academic performance by using the structural equation modeling. Through applying knowledge management in the study process can help students to gain better results. As a result, it can be expected to shed light on the relative importance of knowledge management on students’ academic performance. Keywords: Knowledge management, Academic performance, digital economy DOI: 10.7176/IKM/11-2-05 Publication date:March 31st 202

Large displacements of FGSW beams in thermal environment using a finite element formulation

The large displacements of functionally graded sandwich (FGSW) beams in thermal environment  are studied using a finite element formulation. The beams are composed of three layers, a homogeneous core and two functionally graded face sheets with volume fraction of constituents following a power gradation law. The material properties of the beams are considered to be temperature-dependent.  Based on Antman beam model and the total Lagrange formulation, a two-node nonlinear beam element taking the effect of temperature rise into account  is formulated and employed in the study. The element with explicit expressions for the internal force vector and tangent stiffness matrix is derived using linear interpolations and reduced integration technique to avoid the shear locking. Newton-Raphson based iterative algorithm is employed in combination with the arc-length control method to compute the large displacement response of a cantilever FGSW beam subjected to end forces.  The accuracy of the formulated element is confirmed through a comparison study. The effects of the material inhomogeneity, temperature rise and layer thickness ratio on the large deflection response of the beam are examined and highlighted

Do Corporate Social Responsibilities Support Its Financial Performance? Evidence of the Listed Firms in Vietnam

In the latest decades, corporate social responsibilities (CSR) are incrementally noticed in emerging countries regarding to the surge of globalization and the advance of social concerns. However, there exist opposing arguments on how CSR practices influence a firm’s financial performance (CFP), either in theoretical or empirical perspectives, causing many managers’ hesitation in CSR engagement. This study, therefore, examines the impacts of CSR on CFP, considering the individual effect of each CSR endeavor by using the data from listed firms’ financial statements during the period 2015-2019 and panel regression analysis methods. The findings reveal inconstant effects of different CSR activities on CFP. Specifically, a firm’s fulfillment of shareholders’ and customers’ interests contributes to raise its profitability, while its engagement in the benefits of employees and creditors causes a reduction in financial returns. Interestingly, the correlations between firms’ responsibilies towards regulators and suppliers and CFP are statistically insignificant. Furthermore, we make pairwise marginal comparisons to identify the distinctions of CSR-CFP relations across industries. The results only indicate that listed firms in Utilities sector have the lower level of CSR intensity than those in Consumer Discretionary and Consumer Staples sectors. The implications and limitations are also discussed in this study

A Study on the Impact of the Usage of Cost Information on Business Performance of Enterprises in Vietnam

Purpose: The primary objective of the research was to investigate the correlation between the utilization of cost information and business performance of enterprises in Vietnam, particularly in the context of the Covid-19 pandemic.   Design/methodology/approach: A survey was conducted, involving a sample of 380 participants consisting of CEOs, CFOs, managers, board of directors, and individuals in charge of accounting and finance departments. The study employed a structure equation model to analyze the relationship between the use of cost information and business performance.   Findings: The study revealed a significant and positive impact of cost information utilization on business performance among the surveyed enterprises in Vietnam. Additionally, the study provided recommendations for enterprises in Vietnam on how to make use of cost information for various purposes, including planning, evaluating, decision-making, and cost control, to optimize their business performance.   Research, Practical & Social implication: The study's results suggest that utilizing cost information effectively can lead to improved business performance and may provide valuable insights for Vietnamese enterprises on how to navigate the challenging and competitive post-Covid-19 economic environment.   Originality/value: The research employed a structural equation modeling (SEM) approach, and a test for univariate normality demonstrated an outstanding critical skewness ratio value. Furthermore, the kurtosis indicated that the data followed a normal distribution, making it suitable for analysis. Since SEM employs rigorous criteria to evaluate model fit, it can be inferred that the measurement model exhibited a high level of fit. The findings affirm the beneficial impact of utilizing cost information on business performance and offer significant recommendations for Vietnamese businesses in the current post-COVID era

A Review of Salary Policies for Vietnamese Civil Servants from 2010 to 2019

The public- sector salary policy is an important part of the socio-economic policy system, directly related to the balances of the economy, state budget and the life of the salary earners. This paper rests on secondary data that are legal documents on salary policy, related data and literature officially published to describe and analyse the salary system for Vietnamese civil servants in governmental agencies from 2010 to 2019. Some issues are outlined for consideration. First, how civil servants are ranked and salary policies for them from 2010 to 2019 are. The salary policy includes salary formula, base pay, minimum wage, allowances, components of the pay scale, pay rise rules. Second, their four characteristics are drawn out consisting of the stable and unified legal system; career-based grade pay system; many allowances; the salary system tends to pay for performance, be market-oriented but not really achieved. Third, some comments, pros and cons of the salary system in this period are explored. Finally, it is summarized that some suggestions, recommendations to improve Vietnamese civil service salary system through minimizing its disadvantages and promoting inherent advantages. Keywords: Vietnam, salary policy, salary system, public sector, civil servants, career-based system DOI: 10.7176/PPAR/9-11-03 Publication date: November 30th 201

Determination of the Administration Routes, Doses and Appropriate Age to Vaccinate With Ornitin Triple Vaccine For Cross-breed Colored Broilers in Vietnam

The study was to determine the appropriate dose and administration route of Ornitin Triple vaccine in cross-breed coloured broilers in Vietnam by evaluating the antibody titer against Ornithobacterium rhinotracheale (ORT) and local reactions at injection sites on chickens after vaccination. The study was divided into 2 trials. Both trials were designed with 3 vaccine dose groups: 0.0ml (control group), 0.25ml and 0.5ml and 2 different administration routes: subcutaneous at neck (SC) and intramuscular at breast (IM) injection. The result showed that, no statistically significant difference was found between antibody titer of two administration routes as well as 2 vaccine doses until 13-week-old. Local reactions at the injection sites of IM route was less severe than SC at neck and in higher dose would produce a more severe swelling reaction. Daily weight gain was found to have a slight decrease in the vaccinated groups within 2 weeks after vaccination, however, no statistically significant difference was found in later stage (P > 0.05). In conclusion, Ornitin Triple can be used to vaccinate by IM with the dose of 0.25ml for coloured broilers at early age (3-week-old), or 0.5ml for older birds and should be careful for some reactions at the injection sites