高职软件技术专业学生创新能力培养探讨

随着软件行业的迅速发展,对高职软件技术专业学生创新能力培养成为一个亟需解决的问题,通过开放实验室、增设选修课、课程设计(毕业设计)改革和开展软件大赛四个方面,可以增强学生的创新能力,更好地体现高职"以就业为导向"的办学指导思想。     

Research on characters of surrounding rock in complex geology conditions and supporting time

The methods combined by test, field monitoring and theoretical analysis were adopted to do the systemic research on the rock mass from micro-structure to macro-deformation, and rheological model of Jinchuan rock mass was established to discuss the reasonable supporting time. Resuhs show that supporting after suitable stress and displacement release can benefit for the long-term stability of surrounding rock.     

保序变换半群O_n的平方幂等元

设On是[n](n≥3)上的保序变换半群,证明了半群On的顶端Jn-1中平方幂等元个数为2n-4。     

Dynamics of a qubit—TLS system under resonant microwave driving

We demonstrate the effect of different coupling strengths between a microscopic two-level system(TLS)and a microwave field on the dynamics of a qubit—TLS system when the bipartite system is subject to resonant microwave driving.Rabi beating with a different TLSmicrowave coupling strength is demonstrated in simulations.Entanglement,quantified by the concurrence between the qubit and TLS,both for pure states and mixed states,is simulated.When decoherence is considered,entanglement of the bipartite system oscillates with damping and exhibits entanglement sudden death and/or entanglement sudden death and revival.     

Numerical analysis of the two-phase pressure drop and liquid distribution in single-screw expander prototype

In this paper, the numerical simulations have been carried out to evaluate the two-phase pressure drop and liquid distribution in screw channel. The numerical models are validated against the present experimental data with statistical accuracy. The effects of pitch circle diameter （PCD）, inlet velocity and inlet sectional liquid holdup on the pressure drop and liquid distribution characteristics in the screw channel are illustrated. It is found that decreasing the PCD and increasing the inlet sectional liquid holdup can increase the liquid holdup on the outer side in screw channel. The PCD and the inlet sectional liquid holdup need to be considered in evaluating the two-phase frictional pressure drop per unit length in the screw channel. The PCD has an effect on the development of the average pressure in the various cross sections, and the inlet sectional liquid holdup has no visible impact on the changing process of the pressure drop in the screw channel. The correlation developed predicts the two-phase frictional pressure drop in the screw channel with great statistical accuracy.     

建党百年 湖南科技创新发展历程研究

2021年是中国共产党建党100周年,这100年来,科技创新给湖南带来的荣耀历历在目、带来的启示也更加清晰,湖南正努力向着由国家重要影响力的科技创新大省向科技创新强省转变的宏伟目标砥砺前行,助力科技强国建设.文章以建党百年为契机,梳理了湖南科技在4个不同历史阶段具有的特点及创新发展取得的一系列重大成就,借以激励所有科技工作者在助推科技创新高质量发展的道路上奋勇向前,为科技创新谱写新的篇章,迈向更广阔的征程.     

SBR系统反硝化过程中COD与TN关系

SBR是序批式活性污泥法的简称, SBR系统行运行模式不同,脱氮除磷效果会发生变化。SBR系统氨氮硝化过程在好氧阶段进行,脱氮过程主要在缺氧阶段进行。除少数细菌能进行自养反硝化,大部分反硝化细菌进行反硝化都是进行异养反硝化。经研究发现SBR运行过程中TN浓度和COD浓度具有相关性,COD和TN浓度之间存在三阶函数关系,本实验反硝化速率为1.2mg/L。     

A study of the microstructure of CTAB/1-butanol/octane/ water system by PGSE-NMR and Cryo-TEM

In this work, the effect of octane concentration on the phase behavior of CTAB/water/1-butanol system was studied by using pulsed field gradient spin-echo NMR measurements and freeze fracture electron microscopy (Cryo- TEM and FFEM). When the octane concentration increases, the liquid crystalline phase is destabilized and a continuous single-phase microemulsion region from the water apex to the oil apex is formed. The conductivity behavior has a distinct percolative phenomenon, which indicates that the single-phase microemulsion is changed continuously from oil- in-water (o/w) structure via a bicontinuous structure to water-in-oil (w/o) structure. This result is consistent with those of the PGSE-NMR, Cryo-TEM, and FFEM. In the w/o region, the self-diffusion coefficient of water is relatively high ((1—6)×10^-10 m·s^-1) due to the higher solubility of water in the continuous phase consisting of octane (10% by weight) and 1-butanol. The penetration of a large amount of octane molecules between surfactant chains results in the much lower self-diffusion coefficient of octane.