非遗类纪录片的动作线

非遗类纪录片的动作线,即是发生的与人物有关系的某一事件或线索。动作线就如“葫芦串”中间的那根木棍,把其他的错综复杂的事件串联起来形成一个有机的整体。找到动作线,并放大动作线,是非遗类纪录片创作的重要路径。遵循这样的创作原则,纪录片便有了灵魂,丰富起来,也生动起来。

晶闸管机车负荷特性与谐波对馈线保护动作影响的仿真分析

在建立８Ｋ型电力机车的全工况动态运行过程、负荷电流谐波过程以及多列机车运行时牵引供电网络的数学模型基础上，对ＺＫＨ－２Ａ型保护装置进行模拟仿真，得到了不同负荷与谐波条件下继电器的动作行为特性及其变化规律。

短跑运动员终点撞线技术的比较分析

采用终点电子高速数字摄像法、专家咨询、访谈法对参加2002年9月16—20日在沈阳体育学院举行的全国体育院校田径比赛男子、女子100米决赛16名运动员和参加2004年8月7—10日辽宁省青少年田径比赛的男子乙组100米决赛的8名运动员的终点撞线技术进行比较分析,得出以下主要结论:在激烈的短跑比赛中,终点撞线技术是一项不可忽视的关键技术环节;肩部撞线动作是一种先进的技术动作,运动员合理、有效的采用将对运动成绩产生重大影响;辽宁省青少年运动员目前都非常重视在训练和比赛过程中对终点撞线技术的合理运用。

冲刺跑的撞线教法

冲刺跑的撞线动作在课堂教学中,学生往往动作不充分或根本作不出来低头和挺胸动作.我在教授中发现了一种新的教学方法: 一、器械设计 在离终点线1.5-2米的位置放一副跳高架,用软皮筋代替横杆.皮筋的高度稍低于学生的高度,然后拉上终点线.

2P线上游戏 《嘭嘭帮》浮出水面

网络游戏盛行的今天,怎样在尽量节省费用的情况下,更合算更开心地玩网络游戏?现在,《嘭嘭帮》特有的2P模式可以帮你实现这个梦想!

广播剧剧本创作中的人物塑造

广播剧的剧本创作要解决两个核心问题:塑造真实可信、个性鲜活的人物,具有明确的动作指向和性格识别度的人物对白。依据西方的戏剧理论的创作原则,通过确定人物的终极目标,明确人物的意图和行为动机,提供人物明晰的动作线,在把握故事发展和节奏的同时,在对白中展示冲突铺设悬念,展开情节推动剧情发展。行为逻辑和个性统一的人物是广播剧的灵魂,人物的对白则是广播剧的血肉。

汉姆莱特的石磨——对《汉姆莱特》的新解读

汉姆莱特是世界戏剧史上一个最为奇特和伟大的艺术形象.从莎士比亚把他搬上舞台至今,这个戏剧人物竟然引起了长达400年的争议.据说全世界每12天就会有一部关于《汉姆莱特》的专著出版,这恐怕是古今中外艺术史上绝无仅有的特例.

Online object detection and recognition using motion information and local feature co-occurrence

An object learning and recognition system is implemented for humanoid robots to discover and memorize objects only by simple interactions with non-expert users. When the object is presented, the system makes use of the motion information over consecutive frames to extract object features and implements machine learning based on the bag of visual words approach. Instead of using a local feature descriptor only, the proposed system uses the co-occurring local features in order to increase feature discriminative power for both object model learning and inference stages. For different objects with different textures, a hybrid sampling strategy is considered. This hybrid approach minimizes the consumption of computation resources and helps achieving good performances demonstrated on a set of a dozen different daily objects.

论文学的结构形态

纵观古今,放眼中外,文学作品的结构形态,绵邈多姿.然而,任何物质和精神产品,都存在某种形态结构规律。文学的结构形态,也应该有规律可以探寻。文学结构作为作品的内部构架,是一种“内形式”。其形态特点,与内容密切相关。文学用形象描画生活和表情达意的特性,更决定了文学结构这种“内形式”,与作品内容的联系,具有特别的丰富性和复杂性。因此,对文学结构形态的探讨,一要紧扣内容特性,二要注意多种角度.

微观透视曹禺剧作的艺术特色

研究曹禺剧作,可以从宏观着眼,更应微观地从作品各内容元素及其关系着手,探摸和发现他们的内在规律,准确地把握作品的艺术特点及审美趣味,从而较切实地提高人们的鉴赏和创作能力。 一、从戏剧动作设计上看《雷雨》、《日出》的成就 优秀的戏剧作品,一般都有一个主动作,它组成了作品的起、

Dynamic performance of heavy-haul combined train applying emergency braking on straight line

A heavy-haul train-track coupled model is developed. Taking the emergency braking of the 2×104 t combined train as example, the train longitudinal impulse, the coupler dynamic behaviors and wheel-rail interactions of vehicles distributing in the different positions are analyzed. The results indicate that under the coupler compressing forces, the couplers of middle locomotives may tilt to the free swing limits, which induces the unidirectional tilt of their connected wagon couplers. Consequently, the coupler longitudinal forces produce the lateral components, and then affect the wheel-rail dynamic interaction. The performance of the middle locomotive and their neighboring freight wagons deteriorate significantly, becoming the most dangerous parts in the combined train. The wagons disconnecting with the locomotives can basically keep their couplers to stabilize in the centering positions, even though the maximum coupler longitudinal force acts on it. And its corresponding running safety also has little changes.

Optimum line reclosing time for the enhancement of interconnected power system stability

Automatic line reclosing schemes used in an extra-high-voltage power system is an economical and effective means to maintain transient stability. A novel method is proposed in the paper to adaptively optimize the automatic line reclosing time after a transient fault for enhancement of interconnected power system transient stability. Both the study on the transient energy over network and the structure-preserving multi-machines power system model illustrate that the excessive convergence of potential energy on the lines with a certain cutset deteriorate power system stability, and therefore, an optimum line reclosing strategy can be established by minimizing the change in transient potential energy distribution across a cutset lines in the vicinity of the faulty line as an optimization target, and the optimal reclosure time is set to the time of minimum line phase angle difference. Without any pre-determined knowledge, the method is adaptive to various power system operation modes and fault conditions, and easy to implement because only a limited number of data measured at one location on a tie-line linking sub-networks are required. Simulations have been performed with the OMIB(One Machine and Infinite Bus System) and a real inter-connected power system to verify the applicability of the method proposed.

DYNAMIC ANALYSIS OF PIPELINES LAID THROUGH ALLUVIAL VALLEY

This paper describes the dynamic characteristics of pipelines laid through alluvial valleys. We assume that the alluvial valley has a semi-cylindrical cross-section. The ground motion of alluvial valley under harmonic seismic SH waves is carried out, and the pipeline-soil dynamic interaction is taken into account. Though simple, the model may qualitatively explain the earthquake damages of pipelines laid through an alluvial river valley.

Nonlinear Analysis of Flexible and Steel Catenary Risers with Internal Flow and Seabed Interaction Effects

Flexible risers and steel catenary risers often provide unique riser solutions for today’s deepwater field development. Accurate analysis of these slender structures, in which there are high-speed HP/HT internal flows, is critical to ensure personnel and asset safety. In this study, a special global coordinate-based FEM rod model was adopted to identify and quantify the effects of internal flow and hydrostatic pressure on both flexible and deepwater steel catenary risers, with emphasis on the latter. By incorporating internal flow induced forces into the model, it was found that the internal flow contributes a new term to the effective tension expression. For flexible risers in shallow water, internal flow and hydrostatic pressure made virtually no change to effective tension by merely altering the riser wall tension. In deep water the internal pressure wielded a dominant role in governing the riser effective tension and furthering the static configuration, while the effect of inflow velocity was negligible. With respect to the riser seabed interaction, both the seabed support and friction effect were considered, with the former modeled by a nonlinear quadratic spring, allowing for a consistent derivation of the tangent stiffness matrix. The presented application examples show that the nonlinear quadratic spring is, when using the catenary solution as an initial static profile, an efficient way to model the quasi-Winkler-type elastic seabed foundation in this finite element scheme.

Forced transverse vibration of rolls for four-high rolling mill

In order to investigate the forced transverse vibration of rolls under distributed draught pressure and moment of bending roll force, the forced transverse vibration model of rolls for four-high rolling mill was established. The work roll and backup roll were considered as elastic continuous bodies that were joined by a Winkler elastic layer. According to Euler-Bemoulli beam theory, the forced transverse vibration of rolls was analyzed based on modal superposition method. The forced vibration equations were established when the draught pressure and moment of bending roll force were imposed on the rolls respectively. Numerical modeling was made on 2 030 mm cold tandem rolling mill of Baoshan Iron and Steel Company. Simulation results show that when the work roll is only subjected to different forms of draught pressures, the vibration curves of work roll and backup roll are quadratic curves with amplitudes of 0.3 mm and 45 μm, respectively. When only the moments of bending roll force are imposed on the work roll and backup roll, the vibration curves of work roll and backup roll are quadratic curves, and the amplitudes are 5.0 and 1.6 μm, respectively. The influence of moment of bending roll force on the vibration of work roll is related with the bending roll force.

A Novel Smart Forwarding Scheme in LTE-Advanced Networks

Long Term Evolution(LTE) and IEEE 802.16 WiMAX are competing access network technologies adopted in 4G wireless networks in recent years.LTE complies with3 GPP standards whereas 802.16 WiMAX is regulated by the Institute of Electrical and Electronics Engineers(IEEE).Although WiMAX is already operating commercially in Taiwan,the system is limited to an independent new system that is incompatible with the current 3G system.Hence,the cost of implementing the WiMAX system is relatively high,this being an impediment to its rapid uptake and widespread use.On the other hand,LTE conforms to 3GPP that is supported by telecommunication manufacturers and operators and is,moreover,backward compatible with 3G/UMTS cellular systems.The LTE specifications define how user equipment(UE) connects and communicates with evolved Node B(eNB) base stations.The enhanced version,LTE-Advanced,adds a new entity called the relay node(RN) to widen service coverage,although this change has resulted in a more complex architecture.Mobility management and data forwarding are essential components in wireless mobile networking.This paper focuses on the efficient handover procedure in LTE-Advanced networks,and proposes a Smart Forwarding mechanism to improve the handover performance.Simulation studies show that the proposed Smart Forwarding scheme employs a better operational transmission path that effectively reduces handover latency and signal overhead.

Effects of Interaction Between Gravitation and Nonlinear Electrodynamics On Scalar Field Evolution

In this paper we investigate the scalar field evolution in the dyadosphere spacetime by using the third-order WKB approximation. We find that the coupling term between the gravitation and the nonlinear electrodynamics makes the scalar field decay more quickly and it also makes the scalar field oscillate more slowly. On the o＇ther words, this coupling term takes effect on the scalar field evolution as a damping factor. At the same time these effects become more obvious for the scalar field with higher angle quantum number.

The effect of mining face＇s direction on the observed seismic activity

A major natural hazard associated with LGOM （Legnica-Glogow Copper Mining） mining is the dynamic phenomena occurrence, physically observed as seismic tremors. Some of them generate effects in the form of relaxations or bumps. Long-term observations of the rock mass behaviour indicate that the degree of seismic hazard, and therefore also seismic activity in the LGOM area, is affected by the great depth of the copper deposit, high-strength rocks as well as the ability of rock mass to accumulate elastic energy. In this aspect, the effect of the characteristics of initial stress tensor and the orientation of considered mining panel in regards to its components must be emphasised. The primary objective of this study is to answer the question, which of the factors considered as ＂influencing＂ the dynamic phenomena occurrence in copper mines have a statistically significant effect on seismic activity and to what extent. Using the general linear model procedure, an attempt has been made to quantify the impact of different parameters, including the depth of deposit, the presence of goaf in the vicinity of operating mining panels and the direction of mining face advance, on seismic activity based on historical data from 2000 to 2010 concerned with the dynamic phenomena recorded in different mining panels in Rudna mine. The direction of mining face advance as well as the goaf situation in the vicinity of the mining panel are of the greatest interest in the case of the seismic activity in LGOM. It can be assumed that the appropriate manipulation of parameters of mining systems should ensure the safest variant of mining method under specific geological and mining conditions.

Human action recognition based on chaotic invariants

A new human action recognition approach was presented based on chaotic invariants and relevance vector machines(RVM).The trajectories of reference joints estimated by skeleton graph matching were adopted for representing the nonlinear dynamical system of human action.The C-C method was used for estimating delay time and embedding dimension of a phase space which was reconstructed by each trajectory.Then,some chaotic invariants representing action can be captured in the reconstructed phase space.Finally,RVM was used to recognize action.Experiments were performed on the KTH,Weizmann and Ballet human action datasets to test and evaluate the proposed method.The experiment results show that the average recognition accuracy is over91.2%,which validates its effectiveness.

An Elastic Interaction Model of Vortices

Soliton theory plays an important role in nonlinear physics.The elastic interaction among solitons is oneof the most important properties for integrable systems.In this Letter, an elastic vortex interaction model is proposed.It is found that the momenta, vortex momenta and the energies of every one vortex and the interaction energies of everytwo vortices are conserved.