The Impact of Effective Supply Chain Practices, Real Estate Price and Government Budget on Economic Growth: The Case of Vietnam

In the context of global supply chain value, it has greatly contributed to the trade volumes, government budget utility, and promotion for economic growth. Vietnam has been as one of the fastest-growing economies in the Asian Pacific and the world with a robust 7 percent since economic reforms in 1986 till present. At the same time, the real estate market has been an enabler of economic activity by improving housing demands and enhancing economic performance. In particular, the real estate market has also been opened up for foreigners since 2015, who can buy or invest in a property in the country. This paper focuses on exploring the dynamic relationship between real estate prices, government budget, and economic growth in the case of an emerging economy. Using quarterly data covering in the period of Q1/2008 to Q4/2018 with approximately 44 observations and applying the Autoregressive Distribution Lagged (ARDL) approach, results reveal that, in both the short-run and long-run, economic growth is highly affected by fluctuations of the present, and past economic growth. Besides, there exists a long-run relationship between government budget and economic growth. Regarding real estate prices and their impact on economic growth, this study could not find any findings in this relationship in both the short and long run. The recommendations indicate that the trends of global supply value chains can strongly support economic growth in the long run

Integral manifolds for semilinear evolution equations and admissibility of function spaces

We prove the existence of integral (stable, unstable, and center) manifolds for the solutions to a semilinear integral equation in the case where the evolution family (U(t, s)) t≥s has an exponential trichotomy on a half line or on the whole line, and the nonlinear forcing term f satisfies the φ-Lipschitz conditions, i.e., where φ(t) belongs to some classes of admissible function spaces. Our main method is based on the Lyapunov–Perron methods, rescaling procedures, and the techniques of using the admissibility of function spaces.Доведено iснування iнтегральних (стiйких, нестiйких, центральних) многовидiв для розв’язкiв напiвлiнiйного iнтегрального рiвняння у випадку, коли сiм’я еволюцiй (U(t,s))tleqs має експоненцiальну трихотомiю на пiвосi або на всiй осi, а нелiнiйний збурюючий член f задовольняє φ-лiпшицевi умови, тобто належить до деяких класiв допустимих просторiв функцiй. Наш основний метод базується на методах Ляпунова – Перрона, процедурах перемасштабування та технiцi застосування допустимостi просторiв функцiй

Analysis and Numerical Solution of Linear Delay Differential-Algebraic Equations

The analysis and numerical solution of initial value problems for linear delay differential-algebraic equations (DDAEs) is discussed. Characteristic properties of DDAEs are analyzed and the differences between causal and noncausal DDAEs are studied. The method of steps is analyzed and it is shown that it has to be modified for general DDAEs. The classification of ordinary delay differential equations (DDEs) is generalized to DDAEs, and a numerical solution procedure for general retarded and neutral DDAEs is constructed. The properties of the algorithm are studied and the theoretical results are illustrated with a numerical example

Analysis and Reformulation of Linear Delay Differential-Algebraic Equations

In this paper, we study general linear systems of delay differential-algebraic equations (DDAEs) of arbitrary order. We show that under some consistency conditions, every linear high-order DAE can be reformulated as an underlying high-order ordinary differential equation (ODE) and that every linear DDAE with single delay can be reformulated as a high-order delay differential equation (DDE). We derive condensed forms for DDAEs based on the algebraic structure of the system coefficients, and use these forms to reformulate DDAEs as strangeness-free systems, where all constraints are explicitly available. The condensed forms are also used to investigate structural properties of the system like solvability, regularity, consistency and smoothness requirements

The Intention to Participate in Voluntary Social Insurance of Informal Sector Workers: the Case in Mekong Delta, Vietnam

Purpose: The objective of this study is to develop the participation of informal sector workers in voluntary social insurance to ensure the Social Security policy of the Government of Vietnam.   Theoretical Framework: Based on the results compiled from expert as: Kotler, 2003; Schiffman and Kanuk, 2007; Ming-Chi Lee, 2009; Holmgren et al., 2016 and Krajaechun and Praditbatuga, 2019. The model was preliminarily designed by the author through eight prefix variables including: Confidence in Benefits, Evaluation of Social Responses, Perception of risks, Beliefs, Motivation, Attitude towards Voluntary social insurance, Subjective norms, and Intention to participate in Voluntary social insurance.   Methodology: This study employs primary data from a survey of 370 people working in informal workers in 04 province of the Mekong Delta region of Vietnam: Kien Giang Province, Tra Vinh Province, Hau Giang Province and Soc Trang Province. The Authors using Partial Least Squares-Structural Equation Modeling (PLS-SEM) and Bootstrap analysis in the SEM reliability test employed for data analysis and interpretation.   Findings: Research results show that two factors that affect the intention to participate in voluntary social insurance of workers in the informal sector: Attitude towards social insurance and subjective norms.   Solutions: From the research results, the authors have proposed solutions to further improve the participation in voluntary social insurance of workers in the informal sector in the Mekong Delta, Vietnam in future

Analysis of linear variable coefficient delay differential-algebraic equations

The analysis of general linear variable coefficient delay differential-algebraic systems (DDAEs) is presented. The solvability for DDAEs is investigated and a reformulation procedure to regularize a given DDAE is developed. Based on this regularization procedure existence and uniqueness of solutions and consistency of initial functions is analyzed as well as other structural properties of DDAEs like smoothness requirements. We also present some examples to demonstrate that for the numerical solution of a DDAE, a reformulation of the system before applying numerical methods is essential

A numerical integration code for general linear delay differential-algebraic equations

A new numerical integration code (COLDDAE) for general linear differential-algebraic equations (DDAEs) of retarded and neutral type is discussed. The implementation is based on the regularization technique introduced in [13]. In the single delay case, the code can handle noncausal systems, i.e., systems, where the solution at the current time does not only depend on the system at the past and current time, but also future time points

Genetic Diversity and Population Structure of Canarium tramdenum Dai and Yakovl. in Northern Vietnam

Canarium tramdenum occurs naturally in subtropical and tropical regions of Indochina and China. The wood is used for making high quality furniture and the fruit and leaves are used in traditional medicine. However, a lack of information on genetic diversity and population structure has handicapped the genetic conservation and domestication of this high-value species. This study evaluated genetic variation within and among four C. tramdenum populations. Sixty individuals were collected from four natural populations in Vietnam in the provinces of Ninhbinh, Bacgiang, Nghean, and Backan. Genetic diversity and genetic structure were determined using 20 ISSR markers. A total of 192 DNA fragments with sizes ranging from 110 bp to 3,000 bp were detected, of which 154 segments (80.2%) were polymorphic and 38 segments (19.8%) were monomorphic. The ISSR data indicated a moderate degree of genetic diversity for the species (h = 0.252). The four populations were separated into three genetic clusters with low levels of genetic distance between them. AMOVA result showed that most (78%) of the genetic variation was within the populations. The moderate to high genetic diversity of C. tramdenum and the low genetic differentiation among populations suggested that all existing natural populations in the particular regions needed to be preserved to protect the genetic diversity of this species