强水敏稠油油藏CO2 吞吐技术研究

郑408 块为典型的强水敏稠油油藏,由于储层能量不足和水敏性强,采用天然能量开发、注防膨水开发和蒸汽吞吐开发效果较差。通过室内实验研究了CO2 在郑408 原油中的溶解作用,认识了CO2 吞吐回采阶段渗流特征,基于数值模拟方法优化得到了郑408 块CO2 吞吐开发方案。研究表明,CO2 溶于稠油后,可使稠油的体积大幅度膨胀,原油黏度将大大降低;CO2 吞吐回采阶段,由于稠油黏度较高,CO2 在原油中析出后以小气泡形式分散在原油中,形成“泡沫油”渗流状态,“泡沫油”可以提高稠油的流动能力,增加原油的弹性能量,降低地层压力下降速度;数值模拟结果表明,郑408 块CO2 吞吐周期注入量优化值为100 t,注气速度优化值为50 t/d。     

Global sensitivity analysis with dependence measures

Global sensitivity analysis with variance-based measures suffers from several theoretical and practical limitations, since they focus only on the variance of the output and handle multivariate variables in a limited way. In this paper, we introduce a new class of sensitivity indices based on dependence measures which overcomes these insufficiencies. Our approach originates from the idea to compare the output distribution with its conditional counterpart when one of the input variables is fixed. We establish that this comparison yields previously proposed indices when it is performed with Csiszár f-divergences, as well as sensitivity indices which are well-known dependence measures between random variables. This leads us to investigate completely new sensitivity indices based on recent state-of-the-art dependence measures, such as distance correlation and the Hilbert–Schmidt independence criterion. We also emphasize the potential of feature selection techniques relying on such dependence measures as alternatives to screening in high dimension.     

Generalized Sobol sensitivity indices for dependent variables: numerical methods

The hierarchically orthogonal functional decomposition of any measurable function η of a random vector X=(X₁,?…?, X_p) consists in decomposing η(X) into a sum of increasing dimension functions depending only on a subvector of X. Even when X₁,?…?, X_p are assumed to be dependent, this decomposition is unique if the components are hierarchically orthogonal. That is, two of the components are orthogonal whenever all the variables involved in one of the summands are a subset of the variables involved in the other. Setting Y=η(X), this decomposition leads to the definition of generalized sensitivity indices able to quantify the uncertainty of Y due to each dependent input in X [Chastaing G, Gamboa F, Prieur C. Generalized Hoeffding–Sobol decomposition for dependent variables – application to sensitivity analysis. Electron J Statist. 2012;6:2420–2448]. In this paper, a numerical method is developed to identify the component functions of the decomposition using the hierarchical orthogonality property. Furthermore, the asymptotic properties of the components estimation is studied, as well as the numerical estimation of the generalized sensitivity indices of a toy model. Lastly, the method is applied to a model arising from a real-world problem.     

大学生人际交往能力及其培养

人际交往不但是大学生情感的需求,也与大学生身心成长密不可分。因此,高校应注重大学生人际交往能力的培养。从大学生人际交往能力的概念入手,论述了大学生人际交往的特点、功能和基本原则,着重阐述了提高大学生人际交往能力的基本技巧,对提高当代大学生交往能力,促进其健康成长具有较强的指导意义。     

现代派文学的感性学评析

现代派文学的诞生与美学的现代转型是互为参照的 ;“aesthetics”经历了由感性学到美学再到感性学的“游历”过程 ;在美学回归感性学的时代 ,现代派文学与审美现代性在非理性的价值诉求上是一致的 ,即美学经过了理性主义的“审美”阶段之后 ,随着“城市感性”的发育 ,进入了非理性主义的“审丑”阶段。而现代派文学的感性核心是关于身体的现代感性学     

大学生人际交往能力现状的实证分析

采用自编《大学生人际交往能力调查问卷》,对某高校的380名本科生进行施测。结果显示:大学生人际交往能力的总体水平较好;不同性别、独生子女与非独生子女、不同来源地、不同年级、不同专业的大学生人际交往能力存在显著性差异。具体而言,男性大学生在影响力、开放性、包容度和人际结交能力方面均稍好于女性,但在情绪控制、友谊表达、人际理解能力方面,则女性好于男性;独生子女在人际交往能力的很多方面都优于非独生子女;来自大中城市的学生,人际交往能力要优于来自农村的学生;在人际结交能力、包容度方面,理工类学生要强于文科类学生;人际处理能力、人际理解能力随着年级的升高而逐渐提高。     

国内外中国研究生跨文化敏感度比较研究

本调查用Chen和Starosta的"跨文化敏感度量表"对100名国内外中国研究生的跨文化敏感度进行测评,旨在探索国内外中国研究生跨文化敏感度现状的差异。研究结果显示,留学国外的中国研究生跨文化敏感度总体水平高于在国内学习的研究生,留学国外的中国研究生比国内研究生更容易接受和认同不同的文化,更能从不同文化互动中获得享受。     

The Feeling Edge of Culture

During the 1960s, the new generation changed the American Creed by deemphasizing sensitivity to evidence, emphasizing feelings and deductive thought, while assuming an adversarial position against the sociopolitical order and embracing the American Black's struggle against racism. Driven by pain, fueled by fear and anger and oriented by existential values of being the Civil Rights Movement, sought to actualize political values of justice and equality. As peaceful demonstrations dwindled, violence increased, converting individual anger to social rage. Anger's cognitive structure changed the concept of society into a dichotomy of Black victims and Ulhite oppressors, forming an ethic of sensitivity with victims occupying the moral high ground. Pain and tragedy were banished from view and blamed on oppressors as individual identities divested civil traits and acquired cultural identity, disuniting the civil society. Rubbing against the American Creed, the ethic ofsensitivity produced a feeling of malaise posing a threat to mentaL health.     

线性规划中的灵敏度分析

考虑了线性规划模型中的灵敏度分析，解决了当约束条件减少时，最优解如何变化的问题。     

学术语篇的人际资源简析

文章分别从传统视角、礼貌原则以及评价理论角度分析了不同语言学理论对学术语篇中人际资源运用的不同解读。通过分析人际资源在学术语篇中的作用，不难看出不管学术作者是为了维护学术语言的客观性、准确性，维护作者的面子，亦或是承认话语的多声性、学术命题可能存在的质疑和挑战，其最终目的都是为了建立学术身份，获得学术认同。