Tests for change—points based on recursive u—statistics

Tests for change—points for the location as well as regression models are often based on cumulative sums of recursive residuals. These recursive residuals are also employed in the sequential detection problem. In the context of general estimable parameters (funtionals of the underlying distribution functions), such recursive residuals may be defined in terms of recursive U—statistics. A class of tests for the change—points based on recursive U—statistics has been considered. Along with some invariance principles for recursive U—statistics, asymptotic properties of the proposed tests are studied.     

W—Ni—Fe合金力学性能的研究

研究了钨基合金中钨的含量与其显微组织、断裂方式及力学性能之间的关系。结果表明，随着钨含量的增加，钨邻接值增加．合金的抗拉强度增加；当钨含量到达一定值后，强度可达最高，再增加钨含量，强度则急剧下降。     

"Preexposure and extinction effects of lithium chloride induced taste-potentiated aversions for spatially contiguous auditory food cues in rats": Correction to Ellins and von Kluge (1987).

Reports an error in "Preexposure and extinction effects of lithium chloride induced taste-potentiated aversions for spatially contiguous auditory food cues in rats" by Stuart R. Ellins and Silvia von Kluge (Behavioral Neuroscience, 1987[Apr], Vol 101[2], 164-169). The aforementioned article contains errors in the last paragraph of the Results section, none of which change the results of the experiment. The corrected paragraph sections are provided in the erratum. (The following abstract of the original article appeared in record 1987-24095-001.) Taste potentiated illness-induced aversions for noisy food were studied in Sprague-Dawley rats. The rats ate from receptacles containing salty food and a contiguous tone produced by speakers under the food followed by lithium chloride injections. In preference tests, the rats then avoided noisy food in favor of quiet food followed by extinction and spontaneous recovery of the auditory aversion over repeated nonreinforced trials. Other rats were given either 4 or 10 days of exposure to the noisy food prior to taste-toxicosis treatment. None of these rats subsequently avoided noisy food. The importance of spatial contiguity and methodological variation in associating nongustatory food cues with illness is discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effect of microstructural parameters on the properties of W-Ni-Fe alloys

The aim of this research was to examine the effect of microstructural parameters on the tensile properties of dif- ferent compositions of tungsten heavy alloys. The microstructural parameters (grain size, connectivity, contiguity, and solid volume fraction) were measured and were found to have a significant effect on the tensile properties of tungsten-based heavy alloys. The microstructural parameters of W-Ni-Fe alloys are sufficiently different to present a range of me- chanical properties. It is concluded that the mechanical properties of tungsten heavy alloys largely depend on the micro- structural parameters and their ductility is particularly harmed when grains are contiguous.     

英语动物名词动用的隐转喻认知阐释

名词动用是一种常见的构词手段,既体现了隐喻化的思维过程,又体现了转喻化的思维过程。将概念隐喻和转喻认知机制结合,从隐转喻的视角研究英语动物名词动用的认知修辞效果,不仅为该语言现象提供了充分的认知阐释,还为进一步探究人类思维与语言结构的关系提供了新的视角。     

低W-W连接度65W-25Cu-10Ni合金的制备及准静态力学性能研究

利用W颗粒表面化学镀Ni结合SPS的方法,制备了低W-W连接度65W-25Cu-10Ni合金,并开展了准静态力学性能研究。结果表明,制得的Ni包W复合粉中Ni包覆层分布均匀且与W结合良好;以Ni包W复合粉和Cu粉为原料制备的65W-25Cu-10Ni合金组织均匀且致密。在准静态压缩加载条件下,与65W-35Cu合金相比,65W-25Cu-10Ni合金的强度及塑性均大幅度提高;在准静态拉伸加载条件下,与65W-35Cu合金相比,65W-25Cu-10Ni合金的强度较高,塑性没有明显提高。机理分析表明,与65W-35Cu合金相比,65W-25Cu-10Ni合金中W-W连接度较低、粘结相由Cu相转变为Cu0.81Ni0.19固溶体,且W与粘结相之间形成了冶金结合,以上三个因素共同导致65W-25Cu-10Ni合金强度的提高;此外,W-W连接度的降低以及W-粘结相界面结合强度的提高是65W-25Cu-10Ni合金在准静态压缩加载条件下塑性提高的原因。     

The dominance-contiguity theory of the acquisition of classical conditioning.

The purpose of this article is to present a formulation of the "dominance-contiguity" theory of the acquisition of classical conditioning in the light of a new treatment of old research and the large amount of new research relevant to the theory. One of the conclusions drawn was "that contiguity is a necessary but not a sufficient condition for classical CR acquisition and that drive reduction is neither necessary nor sufficient for it." 668 item bibliography. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

配邻近空间及其性质

本文首先给出了配邻近空间的定义,并研究了配邻近空间的基本性质,其次给出了配邻近空间的映射性质,最后,研究了配邻近空间的复盖性质。     

函数相关论初探

本文剖析了事物发展过程的相似性与接近性,给出了函数相关度定义,讨论了函数相关度的基本性质;同时阐明了函数相关分析的一般过程     

热处理对硬质合金结构参数的改变

硬质合金的质量在很大程度上受其显微组织的影响,使用适宜的热处理工艺可以使圆滑状棱角的晶粒数量增加,从而改变W C邻接度,使硬质合金的塑性变形能力得到提高,改善了合金的性能。研究了回火工艺对热处理产品的影响,系统地分析了回火时过饱和固溶体的析出物,从而制定合适的回火工艺。同时,探讨了热处理对硬质合金疲劳极限的影响,并通过大批量合金的冲击韧性验证以及用户使用实验证明,热处理合金具有较高的冲击韧性,在循环冲击条件下,热处理合金有较高的使用性能。