109 research outputs found

    Production networks in the wind turbine industry, which place for developing countries in East Asia?

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    International audienceMy doctoral research intersects two recent developments of the global economy. The first is the emergence of the wind turbine industry, to provide the machines for climate-friendly electricity generation. The second is the increasing importance of production networks in East Asia. Production networks are defined by the cross-border dispersion of component production/assembly within vertically integrated production processes. In industries where a production network pattern is in place, each country specializes in a particular stage of the production sequence. The ultimate goal of my research is to understand which factors determine the participation of East Asia developing countries in wind turbine industry’s production network. The findings from this research will broaden our understanding on production networks and its policy implications for developing countries in East Asia, Vietnam in particular. This first-year poster presents four preliminary trade data analysis results. A) Except for a unique decline in 2009, the extent of the wind turbine network had been expanding during the period 2007-2014. B) The network was intra-regional rather than inter-regional. C) Europe was the largest one followed by Asia. D) Developing countries in East Asia only account for minor share of the network. Next, these findings will be confronted to the existing theoretical concept models based on neo-classical trade theory; industrial organization theory and global value chain theory. In the following years, such quantitative international trade analysis will be completed by qualitative sector surveys, most likely in Europe

    Determining of the laser heat flux for three-dimensional conduction model by the sequential method

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    When performing a laser processing, one of the parameters to consider is the laser heat flux. This is a very important parameter of the processing. It is difficult to directly and correctly measure this parameter during the processing. Therefore, to estimate this parameter, a solution has been implemented. In this study, the Newton–Raphson method has been calibrated as an operational algorithm to evaluate the laser heat flux value accurately in the 3-D conduction model. The outstanding features in this algorithm: the unaware absorption coefficient's functional form is no preset, and the nonlinear least-squares are no necessary. To confirm the effectiveness of the presented method, the paper has given two specific applications. Indeed, in this research, based on the results that have been achieved in two illustrations, the sequential method to determine the inversely laser heat flux in the three-dimensional conduction model is a reasonable, correct, and powerful method

    An enforced essential boundary condition by penalty method in the element-free Galerkin (EFG) methods

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    A meshless approach to the analysis of two-dimensional elasticity problems by the Element-Free Galerkin (EFG) method is presented. This method is based on moving least squares approximant (MLS). The unknown function of displacement u(x)u(x) is approximated by moving least square approximants uh(x)u^h (x). These approximants are constructed by using a weight function, a monomial basis function and a set of nonconstant coefficients. A subdivision similar to finite element method is used to provide a background mesh for numerical integration. The essential boundary conditions are enforced by Penalty Method. The results are obtained for a two-dimensional problem using different EFG weight functions and compared with the results of finite element method and exact methods

    On the element free Galerkin method in the static-analysis for the 2-D elastic-linear problem

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    The Element Free Galerkin (EFG) method is a mesh less method for solving partial differential equations in which the trial and test functions employed in the discretization process result from moving least square interpolations (weak form of the variation AL principle). In this paper, the EFG method for solving problems in least-statics {1-D, 2-D) is developed and numerically implemented. The present method is a mesh less method, as it does not need a "finite element mesh" and it is only composed by the particles with theirs "compact support" (the influence domain) in the whole domain. Specially, the shape functions are not satisfying the Kronecker delta property, therefore, in this paper, we must enforce the essential boundary conditions by the Lagrangian multipliers method. Finally, several numerical examples are presented to illustrate the performance of the EFG method. The results are compared with the other method (EFM) and also with the analytic solutions. It shows that the EFG method gives the good effectiveness of the proposed error estimator in the global energy norm and the high rates of convergence with the size of the "compact support"

    An implementation of smoothed particle hydrodynamic methods for fluids problems

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    In this article, we present a numerical method that is Smoothed Particle Hydrodynamic (SPH) method. In the SPH method for the Navier - Stokes equations the most widespread method to solve for pressure and mass conservation is the weakly compressible assumption (WCSPH). This article presents two important benchmark problems to validate the algorithm of SPH method. The two benchmark problems chosen are the Lid - driven cavity problem and Poiseuille flow problem at very low Reynolds numbers. The SPH results are also in good agreement with the analytical solution

    Affordable and reliable power for all in Vietnam progress report

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    Ho Chi Minh's Thought of Loyalty to the Country, Filial Piety to the People of Cadres and Party Members

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    President Ho Chi Minh was very interested in training revolutionary ethics for cadres and party members during his lifetime. He set forth extreme moral standards for each cadre, party member, and people to practice. In particular, loyalty to the country and filial piety to the people is the most comprehensive and inclusive moral standard. Each cadre and party member who practices these revolutionary ethical standards will contribute to better self-cultivation, make the Party strong, and successfully carry out all the tasks of the revolution. Keywords: Ho Chi Minh’s thought, loyalty to the country, filial piety to the people, cadres and party members DOI: 10.7176/JPCR/55-05 Publication date:September 30th 202

    HO CHI MINH'S THOUGHT OF LOYALTY TO THE COUNTRY, FILIAL PIETY TO THE PEOPLE OF CADRES AND PARTY MEMBERS

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    President Ho Chi Minh was very interested in training revolutionary ethics for cadres and party members during his lifetime. He set forth extreme moral standards for each cadre, party member, and people to practice. In particular, loyalty to the country and filial piety to the people is the most comprehensive and inclusive moral standard. Each cadre and party member who practices these revolutionary ethical standards will contribute to better self-cultivation, make the Party strong, and successfully carry out all the tasks of the revolution.  Article visualizations

    Innovative Firm Performance Management Using a Recommendation System Based on Fuzzy Association Rules: The Case of Vietnam’s Apparel Small and Medium Enterprises

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    Purpose: This study aims to apply a classification algorithm based-on fuzzy association rules (FARs) to improve the effectiveness of firms' performance prediction problem. Particularly, this study investigates potential FARs exists between inputs and outputs of firms' performance management process. These extracted FARs could be used to help firm’s managers make better dicision to improve firm’s performance.   Theoretical framework: Private enterprise development has been identified as key to Vietnam's economy that was commonly depended on state enterprise. For that, understanding and improving firms' performance and productivity is one of the most important tasks, from both macro and micro perspectives. There have been many studies on Vietnam's firm performance, but mostly relying on econometric methods that limit the understanding with structural equations. This study, instead, attempts to utilize new achievements of Artificial Intelligence (AI) for this task. Among AI techniques, fuzzy association rule is able to address the relationship between input factors and firm performance indicators. For each company, the finding FARs can be used to predict its performance and then change the business plan or react to improve weekness of organization.   Design/Methodology/Approach: The proposal model is applied on data of small and medium-sized enterprises (SMEs) of the apparel industry in Vietnam in the period 2010-2015. The sample consist of a total of 23637 observation of  Vietnam firms in apparel and textile industry and contains 16 main criterias for those firms.   Finding: A recommendation system (RS) is constructed from disclosed FARs and is a key factor in a novel innovative firms' performance management process. The percentage of classified instances using the mining FARs is not quite high (about 82%), but it is not always the case. Vietnam’s apparel dataset includes rare classes of ROA, therefore applying only frequent FARs is not enough. This issue can be fixed by using both frequent and infrequent FARs.       Research, practical & social implications: The proposed model has a great opportunity to use not only in the small and medium-sized enterprises (SMEs) of the apparel industry but other industrial sectors. FARs support the well-understand of firm performance to firm’s manager and help them better to react. Besides, FARs could be used to create RSs that makes alerts about risk automatically.   Originality/Value: The fact, our current study is the first to inspect the ability of FARs on SMEs of the apparel industry in Vietnam. This study provides theoritical potential knowledge and empirical evidence in the application of FARs technology in innovative firm’s management

    Oral composition

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    Oral care composition comprising a polymer obtainable by copolymerising a mixture of comonomers, from 5 to 95 mol % of the mixture of comonomers is constituted by a como no mer having the formula (I): (I) in which R is hydrogen or a methyl group, L is a divalent organic linking group incorporating a benzylor a carboxyl functionality, n is an integer of from 1 to 4 and Y is an amine, quaternized amine or quaternary ammonium group; and in which the balance of the mixture of co monomers is constituted by neutral and/or anionic comonomers; said composition being in the form of anyone of a toothpaste, gel, foam, chewing gum, deformable strip or mouthwash and being suitable for use in the oral cavity
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