Research and Discussion on Talent Training System of Software Engineering Major
Yang Aimin,
Zhu Jiangshan,
Wu Junping
Issue:
Volume 3, Issue 4, July 2018
Pages:
87-92
Received:
1 July 2018
Accepted:
17 July 2018
Published:
22 August 2018
Abstract: In recent years, under the background of continuous renovation of information technology, software development and software maintenance have become a new type of hot employment field in China. Because most colleges and universities still set up courses according to the traditional syllabus, and the content taught can not keep up with the current development of software technology, although there are a large number of graduates in software engineering major going to the job market each year, there are not many graduates who are actually engaged in related fields of software services. So how to specializes in software engineering major and how to train students to become talents needed by software enterprises are common problems faced by colleges and universities. The paper takes the construction of software engineering professional as the background, mainly discusses the talent training mode of software engineering major from the aspects of talent training program, teaching method reform and curriculum setting, etc., constructs the software engineering professional talent training system structure, proposes “2+1+1” teaching reform model, has developed a quality practice education platform construction program and the construction of the faculty team with the goal of “double energy” talents, and finally summarizes the reform achievements of the school's software engineering major in the past three years. Used as a reform experience, it provides a construction idea for the talent training of software engineering majors in similar universities.
Abstract: In recent years, under the background of continuous renovation of information technology, software development and software maintenance have become a new type of hot employment field in China. Because most colleges and universities still set up courses according to the traditional syllabus, and the content taught can not keep up with the current de...
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Heat and Mass Transfer of NH3-H2O Falling-Film Absorption on Horizontal Round Tube Banks
Nghia-Hieu Nguyen,
Hiep-Chi Le,
Quoc-An Hoang
Issue:
Volume 3, Issue 4, July 2018
Pages:
93-99
Received:
12 July 2018
Accepted:
30 July 2018
Published:
23 August 2018
Abstract: The absorption process has been confirmed as the most important process in absorption refrigeration machines in terms of improving their total efficiency. For this reason, absorber structures in general and heat and mass transfers in absorber in particular have attracted the interest of many researchers in this field. Commonly, the falling film absorber structure is the liquid mixture flows over tubes in a film mode. Mathematical model is developed for the falling film flowing on horizontal round tubes absorber derived from the mathematical model of the test volume element. The two-dimensional numerical simulation is written to solve partial differential equations predicting absorption efficiency. For evaluating the parameters which affect the coupled heat-mass transfer as NH3-H2O diluted solution flowing over horizontal round tubes absorb NH3 vapor to become the higher concentration solution. The fields of velocity, temperature, concentration and thickness of the falling film solution varied by the input conditions of diluted solution and cooling water temperature flowing in the tube represented for a test volume element of the tube. The correlations which give the heat transfer coefficient and mass transfer coefficient in the absorption process in range of solution concentration ω = 28% ÷ 31%, solution mass flow rate per unit tube length Γ = 0.001 ÷ 0.015 kgm-1s-1, coolant temperature twater = 28°C ÷ 38oC are set as two functions. The accuracy of numerical model and experiments are compared by the inlet, outlet the tube bundle of cooling water temperatures and absorber heat load. The absorber heat load deviation of the computing program Qa_cumpute and experimental result Qa_meas is 4.3%. The absorber heat load deviation of simulation result Qa_sim and experimental result Qa_meas is 12.3%. The overall heat transfer coefficient k used for simulation result of absorber heat load was taken from the relationship of the heat transfer coefficient k = f(C; Г; T) = f(0.308; 0.008; 306.3) = 0.863 kWm-2-1). The results were also evaluated with other similar studies by other authors. Based on these simulations, the theoretical studies were done for absorption refrigeration system in order to narrow the working area where the experiments later focused on. The results of this study will be the basis for subsequent application research of falling film absorbers.
Abstract: The absorption process has been confirmed as the most important process in absorption refrigeration machines in terms of improving their total efficiency. For this reason, absorber structures in general and heat and mass transfers in absorber in particular have attracted the interest of many researchers in this field. Commonly, the falling film abs...
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