Vacancy interaction with glissile interstitial clusters in bcc metals

The interaction between a glissile cluster of self-interstitial atoms and a vacancy has been studied in f -Fe by atomistic modelling and elasticity theory. It was found that vacancies can annihilate only with the cluster edge. Vacancies inside the cluster glide prism do not annihilate with interstitials but affect the cluster dynamic properties. Depending on the cluster size and ambient temperature, these vacancies reduce or even prevent cluster motion. Qualitative differences in the results of atomistic and elasticity theory approaches were found, thereby demonstrating the need for the atomistic approach.     

Low-temperature mechanical properties of Ce68Al10Cu20Co2 bulk metallic glass

Although it is well known that traditional metals and alloys will become brittle at low temperatures, the effect of low temperature on the mechanical properties of bulk metallic glasses (BMGs) is yet to be fully understood. In this research, the mechanical properties of Ce₆₈Al₁₀Cu₂₀Co₂ BMG are investigated at low temperatures. It is found that the yield strength of the Ce-based BMG increases significantly with the decrease of temperature. The elastic moduli of the BMG also increase monotonically with the drop of temperature, indicating the continuous stiffening of the BMG, while both Poisson's ratio and global plasticity decline at low temperatures. It is considered that the stiffer atomic bonds of the Ce-based BMG at low temperatures result in the increase of strength, and the higher energy required for nucleation of shear bands also leads to the increase in yield strength.     

Dynamic properties of edge dislocations decorated by interstitial loops in α-iron and copper

Clusters of self-interstitial atoms (SIAs) in the form of parallel crowdions are created directly in high-energy displacement cascades produced in metals by neutron irradiation. They are equivalent to small perfect dislocation loops and, in isolation in pure metals, undergo fast thermally-activated glide in the direction of their Burgers vector. Their strain field and ability to glide allows long-range interaction with other extended defects. Indeed, dislocations decorated by dislocation loops are commonly observed after neutron irradiation. Dislocations gliding under applied stress also encounter these mobile defects. These effects influence mechanical properties and require further investigation. This paper presents results from an atomic-scale study of copper and α-iron at either 0?K or 300?K. Loop drag and breakaway effects are investigated for an edge dislocation under applied stress interacting with a row of SIA loops below its glide plane. The maximum speed at which a loop is dragged is lower in copper than iron, and the applied stress at which this occurs is also lower. These differences in the dynamics of cluster-dislocation interaction are determined by the atomic structure of the defects and cannot be investigated by continuum treatment.     

Characteristics of the interaction of Cu-rich precipitates with irradiation-produced defects in α-Fe

The interaction between copper-rich precipitates in α-iron and either vacancies or self-interstitial atoms and their clusters is studied by atomic-scale modelling. Results are compared with predictions of elasticity theory and interpreted in terms of size misfit of precipitates and defects, and the modulus and cohesive energy differences between iron and copper. Interstitial defects are repelled by precipitates at large distance but, like vacancies, attracted at small distance. Hence, copper precipitates in iron can be sinks for both vacancy and interstitial defects, and can act as strong recombination centres under irradiation conditions. This leads to a tentative explanation for the mixed Cu–Fe structure of precipitates and the absence of precipitate growth under neutron irradiation conditions. More generally, both vacancy and interstitial defects may be strongly bound to precipitates with weaker cohesion than the matrix.     

Information-Hierarchical Organization of Natural Systems II: Futures of Man–Biosphere Interactions and Climate Control

The informational influence of both the vegetation and human society on climate dynamics in moderate and arid zones is revealed. The stability of the Eurasia climate during the last 2,000 years was determined by the specific structure of the Christianity-Judaism sociobiosystem. The study has also revealed the potential information-hierarchical organization of human society with a 71,874-year existence. This organization includes three world religions (Buddhism, Christianity, and Islam) as subsystems and provides both the global stability of climate processes and the conservation of evolutionary developed information-hierarchical organization of the biosphere.     

图文相关性对不同认知方式大学生阅读影响的眼动研究

阅读是我们日常生活中的一项重要认知活动。利用插图来帮助人们提高阅读理解能力是一种常用的方法。本研究选取了40名大学生做被试,使用眼动仪考察了图文相关程度(高和低)对不同认知方式大学生(场依存型和场独立型)图文阅读的影响。结果发现：(1)图文相关性对不同认知方式读者影响不同,图文相关程度对场独立型读者的阅读成绩无显著影响,但对场依存型读者影响显著。场依存型读者对高相关材料的阅读理解成绩显著优于低相关材料。(2)场依存型读者在阅读不同相关图文时会主动调整加工对象。图文相关高时,场依存型读者更多注视插图;而图文相关低时,场依存型读者更多注视文字内容。此外,场依存型读者在图文之间的转换和对文字的注视点平均持续时间多于场独立型读者。本研究认为,高相关插图有助于提高场依存型读者的阅读成绩;场依存型读者在阅读不同相关程度图文时会主动调整加工对象。     

Monologic and Dialogic Styles of Argumentation: A Bakhtinian Analysis of Academic Debates between Mainland China and Taiwan

This study applies the concept of reported speech advanced by the renowned Russian literary scholar Mikhail Bakhtin to compare the argumentative styles of Mainland China and Taiwan. These societies in question are considered by many scholars as sharing the same argumentative style. The study reports that the Mainland debaters more frequently than the Taiwanese debaters maintained the authenticity of the quotations cited from ancient Confucian sources, whereas Taiwanese debaters paraphrased more frequently. On the other hand, this difference cannot be found when debaters quoted from sources other than Ancient Confucians. The findings, according to Bakhtin, imply a contrast of monologic and dialogic tendencies toward authority, which results in a style difference between Mainland and Taiwan argumentation.     

苏辙与佛教

北宋文人苏辙,一生与佛教有着密切的关系。如果说他早年对待佛教的态度,更多是一种文化层面的欣赏的话,那么中年由于新旧党争,二度贬谪,佛教便越来越成为他精神上的支柱。晚年苏辙退居颖上,著书立说,三教调和的思想更加明显。所著《老子解》,宣扬“复性”论,融通儒、释、道。所有这些,在他的诗文中也都有所反映。他的佛教信仰,综合了文化、宗教、哲学、实践多个层面,而这一切,又和他一生的遭际、交游、个性是分不开的。     

Amae in Japan and the United States: an exploration of a "culturally unique" emotion

The experience of an emotion considered to be culturally unique (i.e., Japanese Amae) was tested in the United States, where there is no word to describe the concept. North American and Japanese participants read scenarios in which a friend made an inappropriate request (Amae), made no request, or made the request to another friend. Both American and Japanese participants felt more positive emotion and perceived the requester as feeling closer to them in the Amae condition than in the other two conditions. However, Americans felt more in control when asked for a favor than when not asked, a pattern that did not emerge among the Japanese. Cultural specificity of hypocognized emotions is discussed.