Narrative possibility and narrative explanation

Narratives are about not only what actually happened, but also what might have. And narrative explanations make productive use of these unrealized possibilities. I discuss narrative explanation as a form of counterfactual, difference-making explanation, with a demanding qualification: the counterfactual conditions are historically or narratively (not merely logically or physically) possible. I consider these issues in connection with literary, historical and scientific narratives.     

苏铁茎端分枝类型及其成因的观察研究

为掌握苏铁植物的茎端分枝习性，并为人工促成多头苏铁形成的研究依据，进行了五年多时间的调查分析，在苏铁茎端分枝类型及其成因的研究方面取得初步结果。即：多胚种子长成植株；连体吸芽从母株上凿挖下来后栽植而成；原顶芽受损后产生多个新顶芽；雄花后在较高积温的作用下产生多个新顶芽替代原生长点；羽叶抽生数量明显落于同期茎干径长生长量时茎端顶芽发生分枝。分枝方向上有奇特的呈东西向排列的习性。     

Quantum state holism: a case for holistic causation

I propose to interpret quantum state holism as a view concerning possibilities: the degree of possibility of a compound's outcome is not determined by the degrees of possibility of the components' outcomes. To analyze this proposal I sketch the modal framework of branching space-times with probabilities understood as weights of possibility. These probabilities serve to define holistic events. A holistic event produces its outcomes subluminally; yet the degree of possibility of its outcome is not determined by the degrees of possibility imposed by the event's components.     

嵌入式关系分句的论证及其对英语语法教学的启示

运用转换生成语法的分枝规则和系统功能语法的级转移理论，论证了嵌入式关系分句的生成过程，指出它与从属关系分句的区别主要在于它的递归性与级转移现象，并指出这一论证过程给语法教学的启示：它实践了“教学型语法”的思路；要求语法教师熟悉语言学知识，选取科学理论指导学生解决语法问题。     

同源异流:壮侗文学比较研究——广西少数民族文学比较研究之一

生活在中国南方的壮侗两个少数民族都同是百越民族的后代 ,具有百越民族的文化特征。壮侗两个民族具有相同的神话传说 ,这都体现了壮侗民族文学具有同源的特点。但随着社会的发展 ,到了唐朝以后 ,壮侗文学开始分流 ,壮侗民间文学各有千秋 ,备具特色 ,而侗族文人文学确又不敢望壮族文人文学之项背。两个民族文学同源不同流 ,可以互为他山之石     

The two-body hadronic decays of Bc meson in the perturbative QCD approach： a short review

Along with the running of Large Hadron Collider （LHC） located at CERN in November 2009, a large number of data samples of Bc meson have been collected and some hadronic Bc decay modes have been measured by the LHC experiments. In view of the special and important roles of Bc meson decays playing in the heavy flavor sector, we here give a short review on the status of two body hadronic decays Bc→M1M2 at both experimental and theoretical aspects. For the theoretical progresses, specifically, we will show lots of theoretical studies on two body hadronic Bc decays involving pseudoscalar, vector, scalar, axial-vector, even tensor meson（s） in the final states by employing the perturbative QCD （pQCD） factorization approach. We will present a general analysis about the two- body hadronic decays of the heavy Bc meson and also provide some expectations for the future developments.     

TC2模型下新物理效应对衰变B→ππ的影响

分别在标准模型和TC2模型下，对两体非轻衰变B→ππ过程作了分析和计算，并考虑了湮灭贡献的影响．发现TC2模型下的新物理贡献对以树图贡献为主的衰变影响很小，同时衰变分支比的新物理修正效应对π^-质量的依赖性也不大．     

On Minkowskian branching structures

In Belnap's [Branching space-time. Synthese, 92, 385–434. ‘Postprint’ archived at http://philsci-archive.pitt.edu/archive/00001003] theory of branching space-times (BST) Our World's possible histories are thought of as space-times, yet the theory has models in which histories do not resemble relativistic space-times or any other physical space-times. The aim of this paper is to define a certain class of BST models, called ‘Minkowskian Branching Structures’ (MBSs), in which histories are isomorphic to Minkowski space-time. By focusing on these models rather than on general BST models, we hope that one may be able to improve on earlier BST analyses of physical phenomena. Also, introducing MBSs sets the stage for recent discussions about whether or not branching is physically feasible.     

非线性方程L(λ)U+R(ε,λ,u)=0分支解的迭代方法

本文针对一类非线性方程,构造了一种求其分支解的迭代方法。与其它方法相比,它有这样的优点:在每一步迭代中只需求解一个线性泛函方程。此外还讨论了它的收敛性、存在性及收敛率。