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Knud Thomsen 《通讯和计算机》2014,(3):239-254
The Ouroboros Model offers a novel cognitive architecture with an algorithmic backbone of iterative and self-referential processing. All memory content is organized into meaningful pieces of data, i.e.,chunks and schemata, which are laid down as a kind of snapshots of all activations at a relevant point in time. This entails a grainy structure of memory content. Whereas a core process of "consumption" analysis can naturally be defined taking advantage of this parcellation, it necessitates interpolation for fine nuances, especially for the representation of intermediate values during transients. It is argued that, in the vertebrate brain, essential interpolation functionality is provided by the cerebellum. Findings concerning movement control and perception as well as the involvement of the cerebellum in more abstract, cognitive, tasks can be interpreted as reflecting a function of the cerebellum as a co-processor, i.e., a general-purpose interpolator. The cerebellum is thus boosting representations in cerebral cortex areas, which are reciprocally connected with cerebellar cortex areas. In this paper, it is sketched how the new "interpolator hypothesis" can explain manifold observations, effectively subsuming previous theories of the function of the cerebellum. Directly relating to the BICA challenge, a general-purpose interpolator is postulated as an efficient device providing fine-grained resolution for the representation of diverse content, potentially useful in any cognitive architecture. 相似文献
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何处是人类的故乡?既然人类是从古猿进化来的。那么“,人猿相揖别”究竟发生在哪里?关于人类的起源,近几百年来,世界各国的科学工作者认为,人类起源于非洲。因为在那里发现了大量的年代久远的人类化石。其他各州的人类祖先皆由非洲迁迁徙而去。1984年6月,中国科学院古脊椎动物与古人类研究所研究员、我国蓝田猿人、和县猿人的发现者黄万波教授,在考察当年美国人收购化石的万县盐井沟时有感于三峡的地质地貌,忽发奇想,这里会不会也是一处远古人类的故乡?既然东非大裂谷有大量的人类化石和文化遗存,同样是地壳板块剧烈运动的长江三峡会不会出现东非大裂谷那样令世界惊叹的奇迹呢? 相似文献
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牛为我国最早驯养的家畜之一,并以它为牺牲,列为三牲之首,亦作犒劳三军之用。犒劳的“犒”字,就是以“牛”作偏旁。牛在古书上别称颇多,《吕氏春秋》称“太牢“;《礼记》称“特牲”、“一元”;〈论衡〉称“丑”:《格物论》称“大牲“;《酉阳杂俎》称“古旃”牛(BOS)为脊椎动物门,哺乳纲、偶蹄目、牛科动物。牛科中有牛属的黄牛(BosCaurus domestica),水牛属的水牛(bubalus bubalus),和牦牛属的牦牛(poephagus grunniens)。 相似文献
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节肢动物类害虫会给粮食作物带来灾难性的损害,或吮吸入和其他脊椎动物的血液,传播病原体或引起过敏。尤以昆虫叮咬后引起致命性感染最为糟糕,而最乐观的情况是昆虫叮咬仅造成了或多或少的骚扰。预防农作物损害或者昆虫叮咬涉及到了使用杀虫剂、消除源头或者采取专门措施来改变节肢动物的行为,从而减少粮食作物的损失和昆虫叮咬的发生。个人常用的保护方法是使用昆虫驱避剂来避免媒介昆虫或骚扰昆虫的叮咬。 相似文献
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塔中45井泥盆纪鱼类化石的发现及“东河砂岩”的时代 总被引:8,自引:0,他引:8
1990年在东河1井发现了“东河砂岩”,1993年又在草湖地区草2井找到胴甲鱼化石。经过近几年的古生物地层学的研究,人们先后找到了石炭-泥盆系界线附近的牙形石、孢粉化石,从而将“东河砂岩”划归泥盆系,被大家所接受。近期,在塔中45井发现泥盆纪鱼类化石,使得塔中地区“东河砂岩”划归泥盆系有了更充分的证据。 相似文献
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本文介绍了广州市开展"野生动物进城"保护工程情况。该项目的实质是城市野生动物的恢复,是在充分考虑动物与环境关系的基础上,发挥野生动物在生态系统中的功能和作用,为城市生态提质服务,目前动物恢复工作已取得一定成效和经验。 相似文献