结构化组合补偿抽象精化性质研究

为解决松耦合Web事务复杂业务流程的建模问题,确保组合事务的可靠性和一致性,提出一种基于配对Petri网的结构化组合补偿精化方法,实现复杂多伙伴业务流程的抽象层次建模。定义了4种基于配对Petri网的基本组合补偿结构:顺序、并行、选择和循环结构。引入组合流程精化和组合补偿抽象的定义,分析了复杂业务流程的精化和抽象过程,给出了精化流程应满足的性质。通过具体业务实例验证了该精化和抽象方法的可行性。

结构化组合事务补偿精化性质研究

针对复杂异构、松耦合Web组合事务执行失败时原子性和一致性保持的问题,提出一种基于配对Petri网的复杂组合业务流程的补偿和精化方法,解决复杂多伙伴业务流程的抽象建模问题。首先定义了4种基于配对Petri网的基本组合补偿结构:顺序、并行、选择和迭代结构;然后引入组合流程精化的概念,给出了精化后相关性质的证明,最后通过具体业务实例验证该精化方法的可行性。

基于标注依赖图的服务组合方法

针对服务组合问题,提出了一种既考虑服务输入/输出又考虑服务前提条件/执行效果的结构化组合方法.根据服务请求查找服务组合路径,得到服务依赖图,然后通过依赖图中的依赖关系,把依赖图转化为结构化流程模型,除了标注结构化过程中的某些分支类型时,需要一些额外的用户干预外,整个过程是完全自动的.

职业教育专业教学资源库资源建设研究

针对职业教育专业资源库资源建设的资源碎片化建设、结构化组织要求,提出了分解专业工作业务流程,界定原子化工作任务,围绕工作过程要素建设素材、积件等基础资源的方法,以及依据教学活动设计,对基础资源进行内容组合,构建模块、课程等大粒度资源的方法,并对不同粒度资源的标准化描述进行了探究,使其具有可重用和共享性。

群文阅读,开启语文教改的另一扇窗——群文阅读的构建策略

在小学语文教学中开展群文阅读，有利于提高学生的阅读速度，增加阅读数量，可谓是一种新型的阅读教学模式。同时，它也对教师提出更高的要求，需要教师提高鉴赏能力和文学底蕴，对文本进行归类组合、转变阅读的组织方式与学习方式。

Study of Electroless Ni-P-CNTs Composite Plating

The electroless Ni-P-carbon nanotubes composite plating was studied on the copper substrate. Metallurgical microscope, scanning electronic microscope, X-ray diffractometer and micro hardness tester were used to study the structure, constitution and performance of the electroless Ni-P-carbon nanotubes composite deposit. Experiential results show that, with the increment of carbon nanotubes content in electroless plating solution, the grain size on the sample surface decreases whereas the density of grains and the hardness for composite deposit increases. Moreover, adding carbon nanotubes not only improves the degree of crystallization for the composite deposit but also helps their transformation from the amorphous state to the nanocrystal state.

Research on Optimization wharf Structure Type of Triangle frame pier

Based on optimization wharf structure type of triangle flame pier proposed, namely＂ Spatial triangular flame pier ＋ Big span bent which taking Slant supports＂ Simulating three-dimensional pier model of a variety of conditions in the actual loading by structural finite element software. Under the guidance of the three-dimensional structure of the most unfavorable load combination algorithm, three-dimensional combination algorithm is applied to the new structure by the MATLAB software programming. Search and calculate the most unfavorable combination of action effects and the corresponding intemal force of the main member, checking the feasibility of the three-dimensional algorithms, Calculating the new wharf structure structural features and stability, Providing numerical reference for the design of this sort of wharf.

信托：华宝基金组合投资信托计划亮相

近期，宝钢集团旗下华宝信托面向社会推出结构化基金组合投资信托计划，期限1年，预计优先受益人年收益率42％，发行规模5000万元，合同不超过200份，个人起始认购金额20万元，且须以5万元的整数倍递增。

Two-dimensional polymeric carbon nitride: structural engineering for optimizing photocatalysis

As a two-dimensional(2D) material, polymeric carbon nitride(g-C_3N_4) nanosheet holds great potentials in environmental purification and solar energy conversion. In this review, we summarized latest progress in the optimization of photocatalytic performance in 2D g-C_3N_4. Some of the latest structural engineering methods were summed up, where the relevant influences on the behaviors of photoinduced species were emphasized. Furthermore, the construction strategies for band structure modulation and charge separation promotion were then discussed in detail. A brief discussion on the opportunity and challenge of 2D g-C_3N_4-based photocatalysis are presented as the conclusion of this review.

Tunable synthesis solid or hollow Au-Ag nanostructure, assembled with GO and comparative study of their catalytic properties

In this work, we demonstrated a simple and efficacious two-step method for the synthesis of Ag@Au core-shell nanoparticles （Ag@AuNPs） and the Ag/Au hollow nanocages （Ag/AuNCs） with Ag nanoparticles （AgNPs） as seeds by adjusting pH, and the preparation of hybrid Ag@AuNPs- or Ag/AuNCs-graphene oxide nanocomposites （Ag@AuNPs-GO or Ag/AuNCs-GO） based on the self-assembly. It was noticed from the elec- trostatic assembly experiment that the loading amount of Ag/AuNCs on GO nanosheet was more than that of Ag@AuNPs. The as-synthesized hybrid materials were characterized by transmission electron microscopy, atomic force microscopy, ξ-potential, high-angle annular dark- field scanning transmission electron microscopy, thermo- gravimetric analyzer and X-ray diffraction. Catalytic activities of Ag@AuNPs, Ag/AuNCs and Ag/AuNCs-GO nanostructures were investigated in the reduction of 4-, 3-or 2-nitrophenol to 4-, 3- or 2-aminophenol, and on the basis of comparative kinetic studies the following trend was obtained for the related catalytic activity： Ag/AuNCs- GO 〉 Ag/AuNCs 〉 Ag@AuNPs. These observations were attributed to the simultaneous effects of surface area available for catalytic reaction and composition of the hybrid nanostructures.

Graded microstructures of Al-Li-Mg-Zn-Cu entropic alloys under supergravity

Investigating the microstructures and properties of gradient materials has been regarded as a promising way to accelerate the identification of optimal compositions for applications. Herein, a supergravity method is applied to prepare the graded entropic alloys Al-Zn-Li-Mg-Cu. Through carefully optimizing the experimental conditions, the graded microstructures and hardness values appear after the supergravity technique. The morphology of the alloy significantly changes from the bulk intermetallics to eutectic structures along the supergravity force direction, which results from the crushed and graded aluminum oxide combined with the extremelystrong force. The results show that with this supergravity method, a performance-enhanced alloy can potentially be achieved through the centrifugation in a short time span and thus it paves the way for designing and synthesizing entropic alloys with intriguing properties.

Structure condition under initial enlargement of filtration

We address the question of how the structure condition is affected when one possesses some additional information at the very beginning of the investment period.The structure condition represents essentially an alternative to non-arbitrage conditions for the Markowitz’s portfolio optimization framework,and is crucial for the existence of the optimal portfolio in quadratic utility settings.Herein,we provide practical assumption on the initial market model and the additional information to preserve the structure condition.The stochastic tools that drive this result are a generalization of the Lazaro-Yor representation by Lazaro and Yor(1978)and optional stochastic integral.

The internal structure models of Europa

We model the interior of Europa using a method by which we set three layers of Europa and the composition of each layer in advance. Comparing the calculated mass and radius related to each model with the data derived by the observations, we propose three possible internal structure models for Europa. All models are assumed to be differentiated into a metallic core, a (Mg,Fe)2SiO4 silicate mantle and an outer water shell. The only difference amongst these models are the composition of the core. The core of Model I is composed of Fe, while Model II composed of FeS, and the two models are based on the inferences provided by Europa's external gravitational field. Model III has a core which consists of Fe-FeS alloy, similar to that of Earth's outer core. Model I has a Fe core with a radius of 431 km, a (Mg,Fe)2SiO4 mantle with 999 km and a water shell with 132 km. Model II has a 777 km FeS core, a 619 km (Mg,Fe)2SiO4 mantle and a 167 km water shell. Model III has a 571 km Fe0.8(FeS)0.2 core, a 832 km (Mg,Fe)2SiO4 mantle and a 166 km water shell. In all three models, the density range and the radius of each layer is consistent with those deduced by Anderson et al.