Steel-concrete composite frames are seeing increased use in earthquake region because of their excellent structural characteristics, including high strength, stiffness, and good ductility. However, there exist gaps in...Steel-concrete composite frames are seeing increased use in earthquake region because of their excellent structural characteristics, including high strength, stiffness, and good ductility. However, there exist gaps in the knowledge of seismic behavior and the design provisions for these structures. In order to better understand the seismic behaviors of composite frame systems, eight steel-concrete composite frames were designed. These composite frames were composed of steel-concrete composite beams and concrete filled steel tube columns. The axial compression ratio of column, slenderness ratio and linear stiffness ratio of beam to column were selected as main design parameters. The low reversed cyclic loading tests of composite frame system were carried out. Based on test results, the seismic behaviors of composite frames such as failure mode, hysteresis curve, strength degradation, rigidity degradation, ductility and energy dissipation were studied. Known from the test phenomenon, the main cause of damage is the out-of-plane deformation of steel beam and the yielding destruction of column heel. The hysteretic loops of composite frame appear a spindle shape and no obvious pinch phenomenon. The results demonstrate that this type of composite frame has favorable seismic behaviors. Furthermore, the effects of design parameters on seismic behaviors were also discussed. The results of the experiment show that the different design parameter has different influence rule on seismic behaviors of composite frame.展开更多
The concept of learner autonomy is well known as very complex as many scholars put emphasis on differences between his ideas and others'. That no consensus has reached so far puzzles us. However, a good understand...The concept of learner autonomy is well known as very complex as many scholars put emphasis on differences between his ideas and others'. That no consensus has reached so far puzzles us. However, a good understanding of autonomy is the basis of putting development of autonomy into practice. Through examining common features of different concepts and explaining the relationship between autonomy and its related concepts, the highly condensed qualities of "relativity" and "duality" are put forward and some implications about specific ways of fostering autonomy in Chinese educational context are also discussed.展开更多
A brand is the identity of a specific product,service,or business.The brand name is quite often used interchangeably with "brand",although it is more correctly used to specifically denote written or spoken l...A brand is the identity of a specific product,service,or business.The brand name is quite often used interchangeably with "brand",although it is more correctly used to specifically denote written or spoken linguistic elements of any product.Developed from the mental space theory,conceptual blending theory is an important part of cognitive linguistic researches.Based on this theory and integration networks,this paper explains the meaning construction of the translated brand names and the way people understand them.This paper takes two successful translation cases and two unsuccessful ones to make the contrast analysis.It proves that conceptual blending theory can provide detailed description and profound explanation of the perceiving process of brand name translation.Meanwhile it points out the direction of brand name translation from the perspective of cognitive linguistics.展开更多
基金Project(12K104)supported by Scientific Research Fund of Hunan Provincial Education DepartmentChina+1 种基金Project(E51254)supported by Scientific Research Foundation for the Doctoral Program of Hunan University of Science and TechnologyChina
文摘Steel-concrete composite frames are seeing increased use in earthquake region because of their excellent structural characteristics, including high strength, stiffness, and good ductility. However, there exist gaps in the knowledge of seismic behavior and the design provisions for these structures. In order to better understand the seismic behaviors of composite frame systems, eight steel-concrete composite frames were designed. These composite frames were composed of steel-concrete composite beams and concrete filled steel tube columns. The axial compression ratio of column, slenderness ratio and linear stiffness ratio of beam to column were selected as main design parameters. The low reversed cyclic loading tests of composite frame system were carried out. Based on test results, the seismic behaviors of composite frames such as failure mode, hysteresis curve, strength degradation, rigidity degradation, ductility and energy dissipation were studied. Known from the test phenomenon, the main cause of damage is the out-of-plane deformation of steel beam and the yielding destruction of column heel. The hysteretic loops of composite frame appear a spindle shape and no obvious pinch phenomenon. The results demonstrate that this type of composite frame has favorable seismic behaviors. Furthermore, the effects of design parameters on seismic behaviors were also discussed. The results of the experiment show that the different design parameter has different influence rule on seismic behaviors of composite frame.
文摘The concept of learner autonomy is well known as very complex as many scholars put emphasis on differences between his ideas and others'. That no consensus has reached so far puzzles us. However, a good understanding of autonomy is the basis of putting development of autonomy into practice. Through examining common features of different concepts and explaining the relationship between autonomy and its related concepts, the highly condensed qualities of "relativity" and "duality" are put forward and some implications about specific ways of fostering autonomy in Chinese educational context are also discussed.
文摘A brand is the identity of a specific product,service,or business.The brand name is quite often used interchangeably with "brand",although it is more correctly used to specifically denote written or spoken linguistic elements of any product.Developed from the mental space theory,conceptual blending theory is an important part of cognitive linguistic researches.Based on this theory and integration networks,this paper explains the meaning construction of the translated brand names and the way people understand them.This paper takes two successful translation cases and two unsuccessful ones to make the contrast analysis.It proves that conceptual blending theory can provide detailed description and profound explanation of the perceiving process of brand name translation.Meanwhile it points out the direction of brand name translation from the perspective of cognitive linguistics.
