Impact of Accounting Information System on Performance of Vietnamese Construction Enterprises

Purpose: The article analyzes the impact of the accounting information system on the performance of Vietnamese construction enterprises, providing more empirical evidence on the impact of the accounting information system to the performance of Vietnamese construction enterprises.   Theoretical framework: This paper uses Organizational information processing theory, Situation theory, System Theory.   Design/Methodology/Approach: The research method uses a questionnaire survey of accountants, chief accountants, business managers. Firm Performance, AIS Availability, AIS Security and Integrity, AIS Confidentiality and Privacy, AIS System Quality measured on a five-point Likert scale Very good, good, moderate, not good, weak.   Findings: Research results show that AIS Availability, AIS Security and Integrity, AIS Confidentiality and Privacy, AIS System Quality has a positive impact on the performance of Vietnamese construction enterprises.   Research,  Practical   &   Social   implications: Based on the research results, the author has proposed recommendations to improve the performance of construction enterprises in Vietnam.   Originality/Value: This study fills the gap in the the the impact of the accounting information system on the performance of Vietnamese construction enterprises

On asymptotic properties of solutions to σ\sigma-evolution equations with general double damping

In this paper, we would like to consider the Cauchy problem for semi-linear $\sigma$-evolution equations with double structural damping for any $\sigma\ge 1$. The main purpose of the present work is to not only study the asymptotic profiles of solutions to the corresponding linear equations but also describe large-time behaviors of globally obtained solutions to the semi-linear equations. We want to emphasize that the new contribution is to find out the sharp interplay of ``parabolic like models" corresponding to $\sigma_1 \in [0,\sigma/2)$ and ``$\sigma$-evolution like models" corresponding to $\sigma_2 \in (\sigma/2,\sigma]$, which together appear in an equation. In this connection, we understand clearly how each damping term influences the asymptotic properties of solutions.Comment: 29 page

Applications of Lp−LqL^p-L^q estimates for solutions to semi-linear σ\sigma-evolution equations with general double damping

In this paper, we would like to study the linear Cauchy problems for semi-linear $\sigma$-evolution models with mixing a parabolic like damping term corresponding to $\sigma_1 \in [0,\sigma/2)$ and a $\sigma$-evolution like damping corresponding to $\sigma_2 \in (\sigma/2,\sigma]$. The main goals are on the one hand to conclude some estimates for solutions and their derivatives in $L^q$ setting, with any $q\in [1,\infty]$, by developing the theory of modified Bessel functions effectively to control oscillating integrals appearing the solution representation formula in a competition between these two kinds of damping. On the other hand, we are going to prove the global (in time) existence of small data Sobolev solutions in the treatment of the corresponding semi-linear equations by applying $(L^{m}\cap L^{q})- L^{q}$ and $L^{q}- L^{q}$ estimates, with $q\in (1,\infty)$ and $m\in [1,q)$, from the linear models. Finally, some further generalizations will be discussed in the end of this paper.Comment: 38 page

Modélisation de multicouches avec interfaces souples ou élastoplastiques par éléments finis plaque = 2D finite element for Multi layer with elastoplastic interfaces

National audienceUn nouveau développement d'un élément fini de type layer-wise, une cinématique par couche, et des applications, sont proposées ici. Ce modèle comporte 5n champs cinématiques pour un multicouche à n couches. MPFEAP (Multi Particular Finite Element Analysis Program, un élément-fini à 8n noeuds) propose désormais, un module dynamique mais également la prise en compte d'interface non linéaires ou imparfaites. Les exemples proposés ici concernent le champ du génie civil, collage et connections de poutres mixtes par connecteurs discrets

The relation between fault movement potential and seismic activity of major faults in Northwestern Vietnam

In this study, the method of Fault Movement Potential (FMP) proposed by Lee et al. (1997) is used to assess the movement potential of some major faults and its relationship with the seismic activities in Northwestern Vietnam. The fault movement potential is assessed by the magnitude of FMP (from 0 to 1) and calculated based on the relationship between kinematic characteristics of the faults and regional tectonic stress field. The maximum compressive stress axis in Northwestern Vietnam has the nearly horizontal trend (7.4±4.0) and the direction of 170.2±6.7. The calculated results of FMP at 60 geological survey points along major faults in Northwestern Vietnam show that the movement potential of these faults is mainly from medium to high (40/60 points with FMP = 0.6 - 0.9). In particular, the faults in Dien Bien Phu have the highest movement potential (FMP = 0.8 - 0.9). An earthquake catalog that consists of 177 earthquakes with M = 4.0 - 6.8 occurring in the studied area from 1277 to 2016 is used to assess the relationship between seismic activities and fault movement potential. The research results indicate that at the locations on the faults with high movement potential, seismic activities occur frequently. On the segment of Son La fault zone in Tuan Giao, Tua Chua, the movement potential has the highest value (FMP = 0.9), corresponding to the occurrence of Tuan Giao earthquake with M = 6.8 in 1983. On the contrary, weak earthquake or even no earthquake occur at the locations with low movement potential such as the segment of Son La fault in Moc Chau, Yen Chau, the segment of Ma River fault in Lang Chanh and the Than Uyen fault in Than Uyen. With the complete survey dataset on slip surface attitude of faults in contemporary times, FMP is significant for assessing the level of seismic activities on each part of the faults, serving the segmentation of faults, establishment of seismogenic regions, earthquake prediction and seismic hazard assessment.ReferencesAndeweg B., Vicente G. De , Cloetingh S.,  Giner J., and A. Muñoz Martin, 1999. Local stress field and intraplate deformation of Iberia: Variations in spatial and temporal interplay of regional stress sources, Tectonophysics, 305, 153-164.Angelier J., Tarantola A., Valette B., Manoussis S., 1982. Inversion of field data in fault tectonics to obtain the regional stress - I. Single phase fault populations: a new method of computing the stress tensor, Geophys. J. R. astr. Soc., 69, 607-621.Bui Van Duan, 2012. The study on contemporary tectonic characteristics and seismic activities in Muong La - Bac Yen fault zone. 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Institute of Geophysics, Vietnam Academy of Science and Technology, Hanoi (in Vietnamese).Nguyen Ngoc Thuy et al., 2008. Seismic hazard assessment, design earthquake parameters and micro-zonation of Hua Na hydropower dam area. Final report of the technical design stage. Institute of Geophysics, Vietnam Academy of Science and Technology, Hanoi (in Vietnamese).Nguyen Trong Yem, 1996. Tectonic stress field in Cenozoic in Vietnam. Journal of Geology (Hanoi), series A 236, 9-10 (in Vietnamese).Nguyen Van Hung, 2002. Some basic features of neotectonic faults in Northwestern Vietnam. Geological Doctoral Thesis, Institute of Geological Sciences, National Center for Natural Science and Technology, Hanoi (in Vietnamese).Nguyen Van Hung, Hoang Quang Vinh, 2004. On activity of neotectonic faults in Northwestern Vietnam. Journal of Geology (Hanoi), series A(285), 38-48 (in Vietnamese).Nguyen Van Luong, 1996. 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Neo-tectonics and contemporary geodynamics in Vietnam sea area and adjacency. Science and Technology Publishing House, Hanoi, 330p (in Vietnamese).Phan Trong Trinh, Hoang Quang Vinh, Nguyen Van Huong, Ngo Van Liem, 2013. Active fault segmentation and seismic hazard in Hoa-Binh reservoir, Vietnam. Central European Journal of Geosciences, 5(2). 223-235. DOI: 10.2478/s13533-012-0128-5.Phan Trong Trinh, Ngo Van Liem, Nguyen Van Huong, Hoang Quang Vinh, Bui Van Thom, Bui Thi Thao, Mai Thanh Tan, Nguyen Hoang, 2012. Late Quaternary tectonics and seismotectonics along the Red River fault zone, North Vietnam. Earth Science Reviews 114 (3-4), 224-235.Phan Trong Trinh, Nguyen Trong Y., Nguyen H., Lacassin R., Tapponnier P., Leloup H. Winter Th., 1994. Active faulting and tectonics of North Vietnam. International Workshop on Seismic Hazard in SE Asia, Hanoi, Vietnam.Reid H.F., 1910. The mechanics of the earthquake. In A.C. Lawson (Ed.), The California earthquake of April 18, 1906, Report of the State Earthquake Investigation Commission, Vol.II., Washington,  DC: Carnegie Institute of Washington, 3-55.Reid H.F., 1911. The elastic rebound theory of earthquakes. Bulletin of the Department of  Geology, University of California Publications 6(19), 413-444.Roman D.C. and Heron P., 2007. Effect of regional tectonic setting on local fault response to episodes of volcanic activity, Geophysical Research Letters, 34, L13310.Simons W.J.F., Socquet A., Vigny C., Ambrosius B.A.C., Haji Abu S., Chawat Promthong, Subarya C., Sasito D. A.,  Matheussen S., Morgan P., and Spakman W., 2007. A decade of GPS in Southeast Asia: Resolving Sundaland motion and boundaries, J. Geophys. Res., 112, B06420, DOI:10.1029/2005JB003868.Sorbi A., Arian M., Pourkermani M., 2009. The movement potential evaluation of the major Quaternary faults in Tehran Quadrangle. 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Biosynthesis of silver nanoparticles using curcumin against the bovine mastitis bacteria

Bovine mastitis is the most common disease and has greatly affected economies around the world. This study aimed to determine the antibacterial ability of bovine mastitis by curcumin - silver nanoparticles (Cur-AgNPs). The study included experiments on presenting a new process for synthesizing silver nanoparticles using curcumin from fresh turmeric as a reducing agent and stabilizer. UV visible spectroscopy of the samples revealed the localized surface plasmon resonance absorbance of the dispersion of silver nanoparticles at 430 nm. The prepared Cur-AgNPs has a spherical shape with an average size of 30 nm and a size distribution of 15–47 nm. FT-IR (Fourier transform infrared spectroscopy) measurements of the samples showed that silver nanopartilces has been encapsulated well by curcumin. Cur-AgNPs with a concentration of 50-200 μg/mL has very effect to Staphylococcus aureus, Pseudomonas aeruginosa causing bovine mastitis in vitro. The maximum inhibition zone formed was 15 ± 0.85 mm for Staphylococcus aureus and 14 ± 0.56 mm for Pseudomonas aeruginosa. Plant materials mediating for the synthesis of silver nanoparticles have relatively rapid, less expensive, and widespread applications for antimicrobial therapy in the livestock sector