Dynamic Characteristics of Growth and Development of Xiangsha Taro in Jingjiang

The growth and development of Jingjiang Taro [Colocasia esculenta（L.） Schott] were observed, laying foundation for highly-yielding cultivation technology system of Xiangsha taro. The results indicate that germination of the second taro happened from 46 d after sprouting （7-8 leaves）; the first taro began to expand, from 125 d after sprouting （12 leaves） when the the second taro was been formed; the third taro began to form from 141 to 150 d after sprouting （15-16 leaves）. The fresh weight of the second and third taros quickly increased from the time of 15 leaves to harvest. Early September is a transformation term of Xiangsha taro from vegetative body dominant to corm growth dominant.

Effects of Cultivation Methods on Yield Formation and Photosynthetic Characteristics of Zhuliangyou 4024 and H You 159 as Doublecropping Rice

To explore the high-yield cultivation methods of Zhuliangyou 4024 and H You 159 when planted as double-cropping rice, the effects of two cultivation meth- ods, i.e., seedling broadcasting and transplanting, were studied on SPAD value, photosynthetic rate, grain yield and yield components. The results showed that the seedling broadcasting cultivation was conducive to Zhuliangyou 4024 and H You 159 to obtain higher yield. The higher chlorophyll content and photosynthetic rate and their slower decrease of flag leaf after full heading of the seedling broadcasting cultivation were thought to be the physiological basis of high yield.

The Impact of Electrode Configuration on Characteristics of Vacuum Discharge Plasma

Generation characteristics of vacuum discharge plasma are very important for the applied research of metal plasma. The vacuum discharge electrode configuration and the cathode material affect the generation characteristics of the metal plasma which consists of metal ions coming from cathode and generated by vacuum discharge. In this research, the generation characteristics of the metal plasma generated by vacuum discharge are discussed for four patterns of electrode configurations, i.e. cone-mesh electrode setup, cone-cross line electrode setup, cone-line electrode setup and cone-ring electrode setup. Characteristics of the metal plasma, such as elec- tron density, electron temperature, space potential, ion energy, are measured by the probe method for discussing the impacts of different electrode configurations on the density of generated metal plasma. Moreover, the diffusion velocities of the metal plasma are measured for cathode materials of Pb, Al, and Cu, respectively. The experimental results indicate that the plasma generated by the discharge of cone-ring electrode configuration possesses the maximum density and the metal plasma generated by the Al cathode possesses the fastest diffusion velocity and the highest kinetic energy.

Characteristic Analysis of AC Plasma Arc in Water

An experimental system of AC arc discharge in water was designed with pole-pole electrodes and a peak voltage of 1500 V and a test circuit was set up using virtual instrument technology. The mechanism of an AC plasma arc generated in water was analyzed. The voltage- current characteristic of the AC plasma are was obtained from the waveform. The temperature characteristic was tested with a spectrum diagnosis system, and the effect of different electrode materials on the striking voltage and peak current was analyzed. The results show that when a power supply of 6 kW is applied on electrodes with a gap of 2 mm in water, the striking voltage is from 900 V to 1300 V, the arc voltage is from 40 V to 100 V, the arc current is from 2 A to 7 A, and the zero rest period is from 1 ms to 2 ms. In addition, the arc voltage and current are different for electrodes in aluminum, copper and stainless steel. The arc voltage is lower and the current is higher for an aluminum electrode than those for copper and stainless steel ones. The highest temperature of the arc is 7643 K.

青岛地铁大断面隧道围岩变形特性及施工方案优化

[目的]大断面隧道由于其形状扁平且跨度较大,一般采用多台阶多分步开挖,在施工过程中反复扰动围岩和临时支撑,影响围岩及支护结构稳定性,故须对其围岩变形特性进行研究,并优化施工方案。[方法]以青岛地铁4号线折返区间暗挖隧道为例,结合现场监测数据,通过有限元模拟分析现行施工方案中大断面地铁隧道三台阶九步开挖过程中的围岩变形特性,并与优化后的三台阶五步法做模拟对比。[结果及结论]模拟比较结果表明,现行施工方案横向距离隧道中心线26 m范围内的地面沉降较大,占总沉降量的89.77%;拱顶和拱肩在开挖后变形大,沉降量最大达到10.2 mm,拱顶围岩应力随开挖迅速增加,随着开挖工序推进,拱腰上部和墙角出现局部主应力集中。优化后的三台阶五步开挖法可实现快速开挖和支护,施工工序简化40%,同时减少了围岩扰动,其变形可控制在10 mm的合理范围内,改善了拱顶的应力重分布和墙角的应力集中现象。

论全人类共同价值理念——基于国际话语视角

进入新时代,世情发展变化呼唤新的价值引领,身处两个大局中的中国需要有代表性的创新国际话语。新中国70余年发展实践的奠基和中国共产党百年建党经验的积累,使新时代的中国具备弘扬全人类共同价值、引领人类进步潮流的客观条件。全人类共同价值自身所具备的承认共同性与尊重特殊性的统一、本土性与国际性的统一、开放性与共建性的统一等理论特性及其在国际话语方面的重要意义使其能够回应时代需求。反思当前实践进展的不足,未来或可考虑从增强国际传播与注重跨文化交际、加快中国特色大国外交理论与相关学术体系建设以及积极推进实践融合等方面进一步拓展全人类共同价值的弘扬路径,提高其国际话语塑造力、影响力和感召力。

新时期高校机关党建工作的特点与思考

高校机关党组织所处学校的位置决定了高校机关党建工作有其自身的规律和特有的作用。该文认为,高校机关党建工作要适应新时期各种新的挑战,充分发挥机关党组织的政治核心和协助、监督作用,一是要找准定位、与时俱进;二是要抓住重点、整体推进。

Analysis on Characters and Growth Factors of academicians of Agriculture Faculty of Chinese Academy of Engineering

The research analyzed birthplace, work site and Work unit, discipline, agri- cultural product variety, current age, and selected age, as well as internal and exter- nal factors for growth, which providers references for exploring development of high- level agricultural S＆T talents and formulation of relevant policies.

大跨度石拱桥的全桥结构仿真分析研究

阐述了全桥结构仿真分析的基本思路。结合丹河新桥这一世界最大跨度石拱桥的实例 ,详细介绍了如何建立由多种单元组合而成 ,包括上部结构、下部结构和地基在内的全桥结构仿真分析模型 ,并借助上述模型 ,进行了结构分析计算。计算结果表明 :全桥结构仿真分析技术在大跨度石拱桥的分析计算中 ,能得到较传统计算理论更加详尽和精确的结果 。

工科院校经济管理实验教学示范中心特色建设对策

在对实验教学示范中心建设中,通过实验教学队伍的组织与管理、实验类型的认定与归类、实验项目的建设与规范、实验教学和科学研究的协调与发展4个难点的剖析,提出了抓住重点、带活全局的指导思想,有针对性地给出了经济管理实验教学示范中心建设的应对思路,并简要介绍了工科院校经济管理实验教学示范中心特色建设的对策与尝试。

创新型人才心理契约结构和特征研究:基于比较的观点

致力于探讨创新型人才心理契约的结构和特征,在国内外文献回顾的基础上,先后对330名创新型人才和220名普通一线员工进行心理契约的问卷调查。首先,通过探索性因子分析发现,创新型人才心理契约的组织责任和员工责任均由六个维度构成;而且,通过验证性因子分析和方差分析发现,普通一线员工的心理契约结构和水平均与创新型人才存在显著差异。最后,阐明研究的理论贡献和研究中存在的不足。

新中国70年社会建设的成就、历程和经验

新中国70 年社会建设是不断奋进的70 年,也是硕果累累的70 年。在站起来的时期(1949—1977 年),顺利完成了社会主义改造,实现了由资本社会向劳动社会的转变,人民全方位当家作主。在富起来的时期(1978—2011年),坚持发展就是硬道理,致力于全面建设小康社会,人民生活逐步富裕,基本公共服务体系不断健全。在强起来的时期(2012—2019 年),习近平同志坚持发展新时代中国特色社会主义,完善社会治理新格局,不断增强人民群众幸福感、安全感和获得感。

信息与计算科学专业课程建设和人才培养方案的思考

根据教育部专业规范,结合黄石理工学院教育实际,文章论述了地方性应用型院校信息与计算科学专业的培养目标、科学定位、课程建设等内容。重点对怎样形成专业特色进行了一些探讨,同时通过对2届毕业生在用人单位表现情况的调查,证明了这些探索思路是正确的,方法是可行的。

粘土心墙坝反滤料特性及反滤层填筑的施工控制

新疆某水利枢纽工程拦河建筑物为粘土心墙坝,通过反滤料的料场复查、碾压试验、反滤料特性以及与粘土心墙土料之间关系的分析计算,认为反滤料是符合设计及工程安全运行要求的。根据反滤料的料场分布及其特性,依据设计技术要求,在施工质量控制中,采取了针对性的施工方法及控制措施。

高等职业教育教材建设的若干思考与实践

高职教育是高等教育的重要组成部分 ,高职教材建设与高职培养目标、课程建设关系紧密 ,它是整个高职教育教学工作的重要组成部分。高职教材应体现特色 ,适应培养生产、建设、管理、服务第一线需要的高等技术应用性专门人才的需要。本文从高职课程建设与教材的特色为切入口 ,结合教材建设实践 ,对理论教学和实践教学教材建设、校内自编讲义。

MECHANICAL BEHAVIORS OF SATURATED SAND UNDER COMPLICATED LOADING

The different physical states of saturated sand, including shear elasticity, positive dilatancy, and negative dilatancy (preliminary negative dilatancy, secondary negative dilatancy and reversal negative dilatancy) are revealed based on the pore water pressure response of saturated sand in undrained dynamic torsional tests of thin cylinder samples and also checked by the drained cyclic triaxial tests under a given mean effective normal stress. According to the effective stress path of different physical states under the undrained cyclic torsional tests the physical state transformation surface, stress history boundary and yield surface are determined, and the state boundary surface is also determined by the range of effective frictional stress state movement. Based on the moving yield surface without rotation, and the expanding stress history boundary surface relevant to the stress path variations under different physical states in 3D stress space, a physical state model is proposed to provide a new approach to calculating the transient pore water pressure under the undrained condition, and the volume strain of dilatation under drained condition in this paper.

习近平文化建设思想研究

文化是一个国家、一个民族的灵魂,是推动国家发展和民族振兴的强大精神动力。党的十八大以来,在国内外综合因素的作用以及个人客观冷静思索下,习近平文化建设思想应运而生并日趋成熟。这套集真理与价值于一身的理论体系,涵盖了优秀传统文化观、社会主义先进文化观、社会主义核心价值观、理想信念观以及文化自信观等诸多领域。既有以往党在文化建设思想上的共同特征,又体现了新时代建设社会主义先进文化的新特征。当前,我们要在学习和宣传好习近平文化建设思想、深刻把握其精神实质的同时,还要积极将其贯彻到新时代中国特色社会主义建设和改革的伟大实践中建功立业。

城市交通型口袋公园设计初探——以上海市虹口区东长治路旅顺路公共绿地为例

随着城市发展进入新的历史时期,人们对城市环境质量、生活质量的要求越来越高。转变城市的发展方式显得迫在眉睫。而近年来随着城市的不断建设,特大型城市中心城区已鲜有中、大型绿地的可建设空间。而相应的,城市口袋公园的建设开始得到了足够的重视。口袋公园形式灵活、分布离散、具有良好的可达性,因此被使用频繁。而交通型口袋公园与人们日常出行和生活更为密切相关,其不仅对提升城市生态环境具有积极作用,更在展示城市形象及文化内涵方面具有至关重要的作用。但交通型口袋公园面积较小,受周边交通因子影响较大,本文将通过对上海市虹口区东长治路旅顺路公共绿地的实践,剖析探讨如何建设一处安全优秀且广受欢迎的交通型口袋公园。

网络文化在建设社会主义文化强国中的时代价值

建设社会主义文化强国是我们党把握时代脉搏,立足形势发展变化做出的重大战略决策,是实现中华民族伟大复兴的必然要求。网络文化作为信息时代催生的一种新的文化形态,是中国特色社会主义文化的重要组成部分,也是建设社会主义文化强国的重要阵地。因此,我们要以创新的精神积极引导和培育中国特色网络文化。