离心叶轮流道型线对气固两相流动的影响

以实验方法对旋转离心叶轮内气固两相流动进行了研究。离心叶轮的磨损主要由叶片进口的冲击磨损和压力面的滑移磨损构成。经对实验照片的分析可知,叶轮入口颗粒径向速度的大小是造成叶轮冲击磨损的主要原因。不同流道型线叶轮的对比结果可以证明,改变流道型线能有效地叶轮抗磨损的能力。     

中国古代分封制与郡县制之争

由于中国古代社会君主专制的中央集权政权不断巩固与发展,自秦汉以来郡县制一直占主导地位,而分封制也以与西周不同的形式长期延续存在.分封制与郡县制都是君主专制政体下中央和地方关系的体现形式,二者的长期争论反映了中央集权与地方分权的斗争.     

传上古风情的几个古文字——释令、今、化、尼、及

古代神话以女娲为“高禖”,掌人间婚姻子嗣。女娲下令“会男女”,令女子于仲春二月坐于社,以待男子“问名”。故本义为“女娲令”的令字,以及本义为二月初一的今字,皆从亳社取形亳社下画坐待之女子,就是令字;亳社下画“一”,就是今字。女娲命令相会男女转圈追逐,转圈追逐的男女相对位置有变化,殷商人从不同相对位置的男女取形,分别造了化、尼、及三字。     

Longitudinal shape analysis by using the spherical coordinates

One of the important topics in morphometry that received high attention recently is the longitudinal analysis of shape variation. According to Kendall's definition of shape, the shape of object appertains on non-Euclidean space, making the longitudinal study of configuration somehow difficult. However, to simplify this task, triangulation of the objects and then constructing a non-parametric regression-type model on the unit sphere is pursued in this paper. The prediction of the configurations in some time instances is done using both properties of triangulation and the size of great baselines. Moreover, minimizing a Euclidean risk function is proposed to select feasible weights in constructing smoother functions in a non-parametric smoothing manner. These will provide some proper shape growth models to analysis objects varying in time. The proposed models are applied to analysis of two real-life data sets.     

Robust modal estimation and variable selection for single-index varying-coefficient models

In this article, we present a new efficient iteration estimation approach based on local modal regression for single-index varying-coefficient models. The resulted estimators are shown to be robust with regardless of outliers and error distributions. The asymptotic properties of the estimators are established under some regularity conditions and a practical modified EM algorithm is proposed for the new method. Moreover, to achieve sparse estimator when there exists irrelevant variables in the index parameters, a variable selection procedure based on SCAD penalty is developed to select significant parametric covariates and the well-known oracle properties are also derived. Finally, some numerical examples with various distributed errors and a real data analysis are conducted to illustrate the validity and feasibility of our proposed method.     

法益抽象化、精神化问题的中国型塑

法益具有立法批判、解释机能，能够、应当、且需要存在。当前学界对法益抽象化、精神化之批判存在前提设置不当、循环论证及混淆对法益进行抽象化、精神化理解与刑法是否应保护某些抽象化、精神化法益的关系的问题。唯有完成法益抽象化、精神化问题的理性型塑，才能合理认知法益论，进而实现刑法处罚的正义化。即使刑法不当保护了某些抽象化、精神化法益，也只能证明法益的立法批判机能需要得到进一步发挥。若从外在形式与内在内容这两个层面上理解“抽象”与“具体”之意，则刑法法益的抽象化不止是个例，诸如侮辱罪、诽谤罪等罪名的正当化已然表明某些精神化法益值得刑法保护。     

昆明方言的"气"

昆明方言的"气"与北京话比有其特殊之处,昆明方言有一个特殊的语气词"气","气"作为类词缀可构成很多词,"气"还可以作为词缀与其他词缀和词根一起构成一些四音节词,作为类词缀还可以重叠。     

齐瓦当艺术论

齐瓦当是指带有齐国文化色彩的瓦当，包括春秋战国时期的齐国、汉代的齐国及周边受齐文化影响的地区所发现的瓦当，其基本范围在今山东省境内。齐国瓦当纹饰具有鲜明的地方特色，无论是题材内容的选择，还是整幅画面的布局以及形象的塑造，都具有不同于别国的艺术特色。齐瓦当以其特有的内容、新颖的构图和独特的艺术风格，成为齐文化的一个重要组成部分，其所附着的丰富的文化信息，对于我们研究古代文明甚至远古文明的发展变化，提供了不可多得的实物资料。     

“是不是”问句的日译研究

一般认为,日语语气形式“ノデハナイカ”的汉语对应形式为“是不是”,但实际上,两者在自然会话中的使用频率大相径庭。在汉语“是不是”问句中,“是不是”在句中所处位置、语句的重音等因素决定了其在共时系统中的用法差异;而日语的语气形式集中于句末,在位置的移动等方面相对不自由,但日语以其丰富的语气形式来表达各种语气,满足各个层面语气表达的需要。这一发现可以直接应用于对外汉语教学和日语教学,同时,还能引发我们对汉日对比研究方法论新的思考。     

Robust variable selection in modal varying-coefficient models with longitudinal

In this article we present a robust and efficient variable selection procedure by using modal regression for varying-coefficient models with longitudinal data. The new method is proposed based on basis function approximations and a group version of the adaptive LASSO penalty, which can select significant variables and estimate the non-zero smooth coefficient functions simultaneously. Under suitable conditions, we establish the consistency in variable selection and the oracle property in estimation. A simulation study and two real data examples are undertaken to assess the finite sample performance of the proposed variable selection procedure.