No non-trivial quasivariety of BCK-algebras has decidable first order theory

Using the semantic embedding technique the theorem announced by the title is proved.     

Lenin's relationship to the ideas of physicists

History and the philosophy of science have played a very important role in dialectical materialism; their results have been destined to support the correctness of the ideas of Marxist philosophers, especially in their application in historical materialism.From this point of view, the circumstances of the origin of the works of the Marxist classics cannot be neglected: Engels wrote hisDialectics in Nature in the period of classical physics, and Lenin published hisMaterialism and Empirio-Criticism at the beginning of the 20th century when our modern physics first began: shortly before the publication of Lenin's book, Röntgen and Becquerel discovered new kinds of radiation, Balmer published his ideas concerning the regularity of the hydrogen spectrum, Plank wrote his first articles about the elementary quantum and Einstein published his three famous articles (1905).During this period, physicists themselves did not understand their results, so important for the further development of physics. In this atmosphere of uncertainty, Lenin — a lawyer and politician — undertook his attempt to criticise the ideas of physicists.We trace one misinterpretation by Lenin of these ideas from books by Mach and Helmholtz.     

中国人眼光谱相对视亮度函数的研究——Ⅲ.不同大小视野对V(λ)的影响

本实验采用闪烁光度法。本实验的视野是7°40′和20′,受试者5人,均属色觉正常者。年龄在30至50岁之间,具有一定实验经验。实验波长从420—700nm,其间隔为20nm,实验的亮度级为30cd/m~2。 四种视野相比较,其中2°视野V(λ)曲线引自明视函数,10°视角的材料来自CIE1964年补充标准观察者?10(λ),其结果:峰值的短波一侧随着视野的增加V(λ)值显著增加,而在峰值的长波一侧则无显著变化。     

短期目标和长期目标设置对投篮成绩,努力程度和状态焦虑的影响

这篇论文调查了短期目标和长期目标对投篮成绩、努力程度和状态焦虑的影响．８７名被试被随机分配到以下一个组中：（１）短期目标组,（２）长期目标组,（３）短期和长期目标结合组,（４）“尽力做好”组。实验时间为７周。研究结果显示：（１）结合目标组、短期目标组和长期目标组的投篮成绩显著优于“尽力做好”组;（２）结合目标组的投篮成绩提高幅度最大,其次是短期目标组和长期目标组,最后是“尽力做好”组,（３）结合目标组、短期目标组和长期目标组的投篮成绩随练习次数的增加而显著提高,（４）努力程度是结合目标组和短期目标组投篮成绩提高的调节变量。     

Must boxing verdicts be biased?

A model of judgment made by sports judges is outlined. Its main assumptions are as follows. (1) From the beginning a judge tries to form a hypothesis about which of the two competitors should be awarded the victory. (2) The advantages of both competitors are assessed, and these values are changed according to successive observations. (3) However, the meanings assigned to successive actions are not impartial: the greater the initial advantage of one competitor, the more his gains are enhanced and his losses de-emphasized. Both statistical analysis of judgments made at a boxing championship and in a special experiment with boxing judges revealed several regularities which seem to fit the outlined model, including a pervasive primacy effect. This effect seems to be a consequence of early preselection of the potential winner and a subsequent one-sided processing of sequentially presented information. Possible ways of avoiding partiality in boxing assessments are briefly discussed.     

人类视觉系统获取颜色恒常性的认知操作特性

以光度测量为基础,采用心理物理学方法,探讨人类视觉系统获取颜色常性的认知特性。共进行了两个实验。实验一,探讨颜色对比对获取颜色常性的认知操作过程的作用。结果发现,视觉系统可根据已适应了的对比参照作用,而校正（或补偿）由于外界照明变化而引起的物理色度变化。实验二,探讨视觉经验对人类视觉系统获取颜色常性的作用。结果发现,颜色常性不仅是一种视觉低层次、自动完成的补偿,而且涉及高层次的意识活动。     

Perceived tempo change is dependent on base tempo and direction of change: Evidence for a generalized version of Schulze's (1978) internal beat model

Assumptions of a theory, still influential, of tempo perception by Schulze (1978) are reconsidered in view of counter-evidence from other time-perception and timing studies. Specifically, it is shown that the role of base tempo of stimuli and the orientation of tempo change (acceleration versus deceleration) have to be incorporated in them. Therefore, Schulze's assumptions were extended so as to include the two stimulus parameters. A generalized version of Schulze's internal beat model, one of three formal elaborations of the theory, was tested in an experiment which required subjects (N = 17) to tell the direction of change (acceleration or deceleration) in metronomic tone sequences presented at tempi of 1, 2, or 4 Hz, the amount of tempo change being varied in steps of 2% between –10% (acceleration) and + 10%, including zero change. Psychometric curves obtained from logistic regression analysis showed the limitation of the original assumptions and supported the proposed generalization of Schulze's model. The validity of the theoretical interpretation of the data was discussed with respect to some methodological constraints in the experiment, such as the presentation of the different tempo conditions and the time length of the metronomic stimuli used, and with respect to their applicability to the performance of expressive drift (rubato versus accelerando) in music.     

智力落后的实验研究及普查结果的分析

智力落后,就其本身来说,不是一种综合症,而是许多不同病因导致中枢神经系统受到损伤,表现为大脑功能发生障碍的一种症状。它发生于发育阶段,是以智力低下和社会顺应不良为特征的。 智力落后的患病率在全世界范围都很高,虽然由于社会要求的标准及年龄取样不同而不完全一致。智力落后是当今社会面临的最重要的社会和医学问题之一,许多国家     

The Manifestation Range of Innately Good Knowledge and Ability,and the Danger of Separation: On Zhuzi’s Question about Understanding Words

Zhuzi (Zhu Xi), Zhang Nanxuan and Lü Donglai continued a discussion begun by Hu Wufeng and his disciples on the subject of “knowing the form of benevolence,” and “seeking for a true mind in an absent one.” One result of their discussion was to make people realize that innately good knowledge and ability are not only manifested in loving one’s parents and respecting one’s elders, but also in the simple acts of drinking when thirsty and eating when hungry. This generated the idea of “manifestation range of innately good knowledge and ability.” However, another conclusion of this discussion claimed that if the desire to drink and eat or the king of Qi’s grudging an ox are included in this range, there would be a danger of viewing innately good knowledge and ability merely as inborn human nature or instinct. This discussion reveals an unsteady relationship between innately good knowledge and ability and the feeling of commiseration, which are sometimes united and sometimes separate.     

Simplicity and generalization: Short-cutting abstraction in children's object categorizations

Development in any domain is often characterized by increasingly abstract representations. Recent evidence in the domain of shape recognition provides one example; between 18 and 24 months children appear to build increasingly abstract representations of object shape [Smith, L. B. (2003). Learning to recognize objects. Psychological Science, 14, 244-250]. Abstraction is in part simplification because it requires the removal of irrelevant information. At the same time, part of generalization is ignoring irrelevant differences. The resulting prediction is this: simplification may enable generalization. Four experiments asked whether simple training instances could shortcut the process of abstraction and directly promote appropriate generalization. Toddlers were taught novel object categories with either simple or complex training exemplars. We found that children who learned with simple objects were able to generalize according to shape similarity, typically relevant for early object categories, better than those who learned with complex objects. Abstraction is the product of learning; using simplified - already abstracted instances - can short-cut that learning, leading to robust generalization.