我国优秀男子散打运动员体能模型研究

对我国优秀男子散打运动员的体能指标与拳腿组合击中率成绩进行相关分析,探讨散打运动员的专项体能特点及结构,筛选出具有代表性的、能够反映出散打特点的专项体能指标,并在此基础上建立我国优秀男子散打运动员体能模型、权重模型、均值模型及评价模型,以便于明确散手运动员在体能上与优秀散手运动员的差距,为运动员的科学选材和训练提供体能意义上的参考。

我国优秀男子短距离速滑运动员专项体能结构模型的构建

运用文献资料法、问卷调查法、实验法和数理统计法,对我国优秀男子短距离速滑运动员的体能构成指标进行专家筛选并确定20项敏感指标。对26名男子健将级运动员进行指标测试,在此基础上通过分层逐步回归统计筛选出8项代表性指标,并通过灰色关联分析法对指标赋权,最终建立反映我国优秀男子短距离速滑运动员体能特征的结构模型。

我国优秀男子赛艇公开级运动员专项体能结构模型的构建

采用文献资料、问卷调查、测试和数理统计等研究方法,以国家赛艇集训队26名男子公开级运动员为测试对象,经指标初选、专家调查和多因素分层逐步回归分析,统计筛选出7项有效反映我国优秀男子赛艇公开级运动员专项体能水平的指标,运用灰色关联分析法对各项指标进行赋权,建立了反映我国优秀男子赛艇公开级运动员专项体能特征的结构模型。

对海员体能结构评价模型的研究——以南通航院参加第二届中国海员技能大比武集训队为例

采用文献资料、德尔菲问卷、数理统计等研究方法,以南通航运职业技术学院参加第二届中国海员技能大比武集训队的46名参与者为样本,分析海员技能项目参与者的体能特征与水平指标。用灰色关联法对入选指标进行赋权,初步构建海员技能参与者体能特征的定量结构模型。

论我国优秀女子短距离速滑运动员专项体能结构模型特征

采用文献资料法、专家访谈法、问卷调查法、测试法和数理统计法,对我国健将级以上23名女子短距离速滑运动员的20项体能指标进行了研究。揭示了我国优秀女子短距离速滑运动员体能结构特征,建立了体能结构模型,短距离速滑运动员体能结构模型是这一群体体能基本特征的集中描述。该模型的建立包括参数筛选、指标权重确定和结构模型特征揭示3个子系统,此模型既可为女子短距离速滑项目的科学选材提供导向目标,亦可使运动员体能训练的操作性、针对性和方向性更加明确。

美国红鱼游泳体能分配模型及其在海区选址中的应用

以深水网箱养殖的美国红鱼为研究对象,通过研究其游泳时主要能量物质和代谢产物的变化规律,构建美国红鱼的游泳体能分配模型,最后结合特定的潮流规律,建立养殖海区最大潮流选择的理论方法。结果显示,美国红鱼游泳过程中,血糖浓度会显著提高,肌糖原有少量减少,肝糖原会显著降低,鱼类游泳接近疲劳时,肝糖原浓度亦接近耗尽;美国红鱼以较高速度游泳过程中,血乳酸和肌乳酸浓度会有较明显的增加,表明美国红鱼游泳过程伴随着无氧呼吸和有氧呼吸两种能量物质代谢过程。本实验提出以肝糖原浓度作为判定鱼类持续游泳能力的重要指标,并建立了基于肝糖原储能消耗的美国红鱼游泳体能分配模型。最后基于美国红鱼体能分配模型,结合养殖海区潮流规律,提出了美国红鱼养殖海区最大潮流流速选择的计算方法。研究表明,本实验提出的鱼类游泳体能分配模型构建方法以及鱼类养殖海区潮流选择论证方法,可为相关研究提供新的途径,为深水网箱、浅海围网等海洋养殖模式的海区潮流选址提供科学的参考依据。

基于AHP的大学生体能素质模型及其应用

根据《国家学生体质健康标准(2014年修订)》中的身体形态、身体机能、身体素质和加分指标等4个一级指标及其8个二级指标,采用层次分析法对肇庆学院学生的体能素质进行评价.结果显示,4个一级指标对总目标的权重分别为0.124,0.124,0.439,0.313.根据建立的体能素质模型计算肇庆学院学生的体能素质分,结果显示,肇庆学院学生在身体素质和加分指标方面的得分偏低,这导致学生体能素质测试优秀率较低.

我国优秀男子竞技健美操运动员专项体能指标的构建与评价体系

采用文献资料法、专家访谈法、特尔菲法、实地测试法和数理统计等方法,以备战2012年世界健美操锦标赛的国家健美操集训队男子运动员为研究对象,构建我国优秀男子竞技健美操运动员专项体能结构模型,为教练员安排整体和个体化训练提供理论依据,也为运动员进行自身评价提供标准和指导。研究表明:1)我国优秀男子竞技健美操运动员专项体能结构模型包括专项协调素质(托马斯无限量)、专项柔韧指标(正肩、反肩、躯干分屈、横叉、左纵叉)、专项速度指标(120s"8字"10m往返跑)、专项力量指标(60s屈体分腿跳、30s俯卧推拉球、提倒立无限量)、专项耐力素质(60s提臀-直角支撑转体组合)等5个主因子,11项指标;2)由专项体能结构模型和权重模型可知,快速力量、身体控制能力、协同能力、柔韧素质及无氧耐力对比赛胜负的影响较大;3)在专项体能结构模型、权重模型的基础上,进一步构建专项体能指标的单项评分标准与综合等级评定标准。

一种新颖的改进人工鱼群算法

针对基本人工鱼群算法(AFSA)在函数优化问题中存在的后期收敛速度慢、求解精度低和易陷入局部最优等缺点,提出了一种新的改进人工鱼群算法(IAFSA)。首先,使用混沌变换来初始化鱼群个体的位置,使鱼群更加均匀地分布在有限的区域内,保证种群具有多样性,利于全局收敛;其次,对觅食行为中具有不同函数值的人工鱼个体采取不同的视野策略,不仅提高了算法的寻优速度,而且有效地降低了鱼群陷入局部最优的可能性;最后,根据运动和体能之间的关系构建体能变换模型,在鱼群觅食的后期,体能开始变弱,这时适时地减小鱼群觅食、聚群和追尾行为中移动的步长可有效提高算法收敛的速度和寻优的精度。通过标准测试函数和14个城市的TSP对算法进行验证,仿真实验结果表明,相比基本人工鱼群算法,改进后的算法具有更快的后期收敛速度和更高的求解精度。

Kinetics of cerium(Ⅳ) and fluoride extraction from sulfuric solutions using bifunctional ionic liquid extractant(Bif-ILE)[A336][P204]

The extraction kinetics of Ce（Ⅳ） and Ce（Ⅳ）-F^- mixture systems from sulfuric solutions to n-heptane solution containing Bif-ILE[A336][P204]（[trialkylmethylammonium][di-2-ethylhewanxylphosphinate]） with a constant interfacial area cell with laminar flow were studied,just to elucidate the extraction mechanism and the mass transfer models.The data were analyzed in terms of pseudo-first-order constants.The effects of stirring speed,specific interfacial area and temperature on the extraction rate in both systems were discussed,suggesting that the extractions were mixed bulk phases-interfacial control process.Supported by the experimental data,the corresponding rate equations for Ce（Ⅳ） extraction system and Ce（Ⅳ）-F^- mixture extraction system were obtained.The experimental results indicated the rate-controlling step.The kinetics model was deduced from the rate-controlling step and consistent with the rate equation.

Application of Multi-agent Models to Urban Expansion in Medium and Small Cities: A Case Study in Fuyang City,Zhejiang Province,China

In this study, three-phase satellite images were used to define rules for the allocation of time and space in construction land resources based on a complex adaptive system and game theory. The decision behavior and rules of government agent, enterprise agent and resident agent in construction land growth were explored. A distinctive and dynamic simulation model of construction land growth was built, which integrated multi-agent, GIS technology and RS data and described the interaction among influencing agents, Taking Fuyang City in the Changjiang River Delta as an example, an assessment process for the remote sensing data in construction land and scenario planning was constructed. Repast and ArcGIS were used as simulation platforms. A simulation of the spatial pattern in land-use planning and the setting of scenario planning were conducted by using the incomplete active game, which was based on different natural, social and economic levels. Through this model, a simulation of urban planning space and decision-making for Fuyang City was created. Relevant non-structured problems arising from urban planning management could be identified, and the process and logic of urban planning spatial decision-making could thus be improved. Cell-by-cell comparison showed that the simulation accuracy was over 72%. This model has great potential for use by government and town planners in decision support and technique support in the policy-making process.

Interference Resistance of Pentamaran Ship Model With Asymmetric Outrigger Configurations

An experimental investigation is performed to assess the relation of interference performance on the total resistance of a pentamaran model advancing in calm water. For this motivation, the total drag of the ship is performed for several values of asymmetric outrigger configuration and hull separation, altering the Froude number in the range 0.3–0.9. Our results indicate that remarkable changes in resistance require notable changes in transverse distance values （hull separation） when wave interference may occur. In addition, there is no single configuration that consistently outperforms the other configurations across the entire speed range and the optimum interference factor -0.2 appears at a Froude number of 0.45 in S/L=0.33 with the outrigger outer position： asymmetric outboard for A3 configuration.

Effect of Electron Itineracy on Magnetism of S=1／2 Ferromagnetic Ising Model

The effect of electron itineracy on the magnetism of S＝1/2 ferromagnetic Ising model is investigated by introducing a hopping term. The electron Green's function method is used to deal with this Hamiltonian. Here emphasis is made on that the magnetization is caused by the difference between the filling of spin-up and spin-down electrons.This concept is in accordance with that of band structure theory. In the zero band width limit, our results are the same as obtained by spin Green's function method. However, our method achieves more detailed physical information. The spontaneous magnetization, Curie temperature, total energy, and specific heat are calculated and investigated in detail by the densities of states. Hopping term depresses the Curie temperature but remains the order-disorder transformation still to be second order transition. Above the transition point, the energy band is the same as that of tight binding system because exchange interaction has no effect anymore. While under the transition point, the energy band splits into two subbands due to exchange interaction.

Critical Behaviors in a Stochastic One-Dimensional Sand-Pile Model

A one-dimensional sand-pile model (Manna model), which has a stochastic redistribution process, is studied both in discrete and continuous manners. The system evolves into a critical state after a transient period. A detailed analysis of the probability distribution of the avalanche size and duration is numerically investigated. Interestingly,contrary to the deterministic one-dimensional sand-pile model, where multifractal analysis works well, the analysis based on simple finite-size scaling is suited to fitting the data on the distribution of the avalanche size and duration. The exponents characterizing these probability distributions are measured. Scaling relations of these scaling exponents and their universality class are discussed.

Motion Characteristics of Novel Floating Foundation for Offshore Wind Turbine

A novel floating foundation to support the NREL offshore 5 MW wind turbine was designed conceptually by combining the characteristics of barge and Spar. The main focus was structural design and hydrodynamic modelling. Based on this novel floating foundation, the hydrodynamic performance was investigated in the frequency domain and time domain by using the wave analysis software Hydro D and Deep C from Det Norske Veritas. The frequency domain analysis was conducted to investigate the effects of the incident wave angle and water depth. The time-domain analysis was carried out to evaluate the response of the floating foundation under a selected operational condition. The hydrodynamic performances of this floating foundation with respect to time series and response spectra were also investigated in this study.

A new model to predict roadheader performance using rock mass properties

Prediction of roadheader performance plays a significant role in the plan of tunnel construction, which is influenced by different key parameters, including rock strength, discontinuity in rock mass, type and specifications of roadheader machine, and brittleness. The main aim of this study is to build a robust empirical equation based on rock mass properties for the roadheader performance prediction. For achieving the aim, a dataset composed of roadheader performance rate and rock properties is established using the dataset compiled from an underground coal mine located in a remote rugged desert environment some 85 km south of Tabas City in mid east Iran. By using gathered data, the statistical analyses are conducted between rock mass properties and roadheader performance to find whether there is a significant relationship between input variables and roadheader performance. The results show that rock mass properties have a considerable impact on the rate of the roadheader performance. It is demonstrated that the proposed model can accurately predict the roadheader performance as a function of rock mass properties.

Concept and evaluation method of equipment system of systems contribution rate

To scientifically evaluate the equipment system of systems(SoS)contribution rate,a contribution rate calculation method based on a structural equation model(SEM)is proposed in this paper.The connotation and evaluation process of the equipment SoS contribution rate were redefined and standardized.To solve the existing problems in the application of the original contribution rate formula,a modified contribution rate calculation formula is proposed.Finally,the contribution rate evaluation index was divided into latent and explicit variables.The measurement and structural equations in the SEM were used to calculate and analyze the latent variables.The simulation results show that the number of defense lines of air defense weapon equipment has a greater impact on the linear configuration than the group configuration.When the number of K-type air defense weapons is sufficient,the two-layer linear configuration should be adopted with 20 air defense weapon systems.When the number of K-type air defense weapons is insufficient,the single-layer group configuration should be adopted with 12 air defense weapon systems.

Novel Logarithmic Active Pixel Sensor with High Dynamic Range and High Output Swing

The logarithmic response complementary metal oxide semiconductor （CMOS） image sensor provides a wide dynamic range, but its drawback is the lack of simple fixed pattern noise（FPN） cancellation scheme. Designed is a novel logarithmic active pixel sensor（APS） with high dynamic range and high output swing. Firstly, the operation principle of mixed-model APS is introduced. The pixel can work in three operation modes by choosing the proper control signals. Then, FPN sources of logarithmic APS are analyzed, and double-sampled technique is implemented to reduce FPN. Finally, according to the simulation results, layout is designed and has passed design rule check（DRC）, electronic rule eheck（ERC） and layout versus schematic（LVS） verifications, and the post-simulation results are basically in agreement with the simulation results. Dynamic range of the new logarithmic APS can reach about 140 dB; and the output swing is about 750 inV. Results show that by using double sampled technique, most FPN is eliminated and the dynamic range is enhanced.

Domain-specific modeling and verification for C4ISR capability requirements

An approach was proposed to specify the C4ISR capability of domain-specific modeling language.To confine the domain modeling within a standard architecture framework,formally a C4ISR capability meta-ontology was defined according to the meta-model of DoD Architecture Framework.The meta-ontology is used for extending UML Profile so that the domain experts can model the C4ISR domains using the C4ISR capability meta-concepts to define a domain-specific modeling language.The domain models can be then checked to guarantee the consistency and completeness through converting the UML models into the Description Logic ontology and making use of inference engine Pellet to verify the ontology.

Improvement of chromium biosorption through protoplast electrofusion between Candida tropicalis and Candida lipolytica

Protoplasts from Candida tropicalis and Candida lipolytica were fused under an optimized electrofusion （electrical pulse strength 6 kV/cm, pulse duration time 40μs and pulse times 5） and then regenerated on YEPD media for achieving new genotypes with higher chromium loading capacity. A target fusant RHJ-004 was screened out by its chromium resistance and chromium-sorbing capacity tests for further research. The comparative study of applicability shows that the fusant has better performance than its parent strains in respect of solution pH, biomass concentration and chromium loading capacity. Especially for treating low concentration Cr（VI） （〈20 mg/L）, above 80% chromium is sequestered from the aqueous phase at pH 1-9. Atomic force microscopy （AFM） visualizes the distribution of chromium on the binding sites of the cells, suggesting that the altered surface structure and intracellular constitutes of the fusant associate with its increased biosorption capacity. The rapid biosorption processes of chromium foUow the Langmuir model well.