浅谈《花间集》中闺怨词的情感表达方式

闺怨词是《花间集》中最具代表性的一类词,它通过特殊意象的寄托、环境气氛的渲染,及以第一人称口吻描述等表达方式,由浅入深地刻画了深闺女子寂寞愁苦的内心世界,着重渲染了浓郁的凄婉哀怨的情感氛围。其艺术上的成就是不容忽视的。     

高校毕业生可雇佣能力的结构及与雇主需求的契合度研究

增进高校毕业生的可雇佣能力是当前提升其就业质量的根本途径.本文的目的在于揭示大学生可雇佣能力的结构,并分析其与不同岗位提供者需求之间的契合程度,从而寻找造成高校毕业生供需矛盾的微观原因.本文首先验证了高校毕业生可雇佣能力是一个包含5个高阶因素和15个一阶因素的多层次心理结构;然后在霍兰德职业模型分析框架下,将高校毕业生...     

“探秘电磁”教育活动教案

“探秘电磁”项目针对初中三年级《物理》中电和磁部分的教学内容,以“探究电和磁的关系,了解电磁学发展史”为主题,利用重庆科技馆磁电展区的展品和辅助实验器材、科技制作等教学资源,以“基于实物的体验式学习、基于实践的探究式学习”为教学理念,采用“5E教学模式”,综合运用体验式学习、做中学、情境教学等教学方法,以展品体验与实验、制作相结合的活动形式,以达到《初中物理课程标准》“了解电与磁的关系”和“了解物理学及相关技术发展的大致历程,学习科学家在科学探索中的研究方法,并能在解决问题中尝试应用科学研究方法”的教学目标。     

Linear active disturbance rejection control for oscillatory systems with large time-delays

Oscillatory systems with time delays exist widely in actual industrial process. This paper discusses the design and tuning of linear active disturbance rejection controller (LADRC) for the oscillatory systems with large time delays. First, internal model controllers (IMC) are designed for the oscillatory systems to compensate the time-delay and cancel the complex poles; then they are implemented with the general LADRC structures and approximated with observer-bandwidth-based LADRCs. Afterwards, the third-order LADRC tuning formulas for oscillatory systems are derived from the IMC controllers. Simulation examples and load frequency control(LFC) in power system with communication delay are used to test the applicability of the proposed tuning formula.     

Engineering the race car wing: application of the vortex panel numerical method

This study examined aerodynamic properties and boundary layer stability in five cambered airfoils operating at the low Reynolds numbers encountered in motor racing. Numerical modelling was carried out in the flow regime characterised by Reynolds numbers 0.82–1.29 × 10⁶. The design Reynolds number of 3 × 10⁶ was used as a reference. Aerodynamics variables were computed using AeroFoil 2.2 software, which uses the vortex panel method and integral boundary layer equations. Validation of AeroFoil 2.2 software showed very good agreement between calculated aerodynamic coefficients and wind tunnel experimental data. Drag polars, lift/drag ratio, pitching moment coefficient, chordwise distributions (surface velocity ratio, pressure coefficient and boundary layer thickness), stagnation point, and boundary layer transition and separation were obtained at angles of attack from −4° to 12°. The NASA NLF(1)-0414F airfoil offers versatility for motor racing with a wide low-drag bucket, low minimum profile drag, high lift/drag ratio, laminar flow up to 0.7 chord, rapid concave pressure recovery, high resultant pressure coefficient and stall resistance at low Reynolds numbers. The findings have implications for the design of race car wings.     

The effects of testing procedure on critical fall height determination for third-generation synthetic turf

Test procedures and their accuracy in determining critical fall height (CFH) on sporting grounds are paramount to player safety. The procedure currently adopted for synthetic turf in Australian football [1] consists of four consecutive drops at various drop heights at three test locations on the sample. The quantity and packing of the infill in third-generation turf and the pooling effect of the rubber particles with consecutive drops suggests that the current standard protocol may need re-assessment. Therefore, the purpose of this pilot study was to investigate whether current methods of testing for CFH are appropriate for third-generation synthetic turf or whether an alternative or adapted method needs to be developed. CFH was measured, using a HISUN Uniaxe-II Impact Tester, on 12 combinations of synthetic turf samples (four different products with three shock pad options). Three conditions were investigated on each sample; the existing protocol; an alternative 12 single-drop protocol and four single drops from the CFH determined from the existing protocol. A significant difference was found for both absolute and percentage difference between the existing and 12 single-drop protocol, with p = 0.001 and t = 4.33 and p < 0.001 and t = 6.03, respectively. There was also a significant difference between the CFH reached with and without a shock pad for both the existing protocol and the 12 single-drop protocol. The results of this pilot study demonstrate that differences do occur with alterations to the existing protocol and highlight the need for a more detailed characterisation of testing methods on third-generation synthetic turf and the response of surfaces to them.     

Three-dimensional kinematic analysis of the golf swing using instantaneous screw axis theory,Part 2: golf swing kinematic sequence

A number of recent studies have measured the extent and timing of segment rotation during the golf swing. A promising technique, instantaneous screw axis (ISA) theory, could provide a better expression of segment rotation. In Part 1 of this two-part study, the objectives are to identify the ISA of the pelvis, shoulders and left arm during the downswing, compute segment angular velocity relative to that segment’s ISA and verify that ISA theory is a valid tool to analyse segment rotation during the golf swing. Results indicate that for all subjects, at least 71% of marker velocity is a result of rotation about their respective ISA, when averaging results over the duration of the downswing, confirming that motion is primarily rotational. Furthermore, ISA position and orientation of each segment approaches, on average, the expected gross axis of rotation, confirming that motion about the ISA is representative of joint motion.     

我国民族传统体育文化对外传播的瓶颈分析

我国民族传统体育文化根植于中华文明之中,也是世界体育文化的一朵奇葩,但在国际上并没有取得相应的话语权。经历了北京奥运会的狂欢,在体育大国向体育强国转变的大背景下,对我国民族传统体育文化进行理性审视是十分必要的。文章从传播信息、传播媒介、传播效果等方面分析了我国民族传统体育文化对外传播中的瓶颈,并提出了相应的改进策略,以期为扩大民族传统体育文化的国际影响力提供借鉴与参考。