Archive - 2005 - Blog entry

拓扑弦与黑洞

ref:
Black Hole Attractors and the Topological String: http://suriya.library.cornell.edu/abs/hep-th/0405146
M-Theory and Topological Strings–I,II:
http://suriya.library.cornell.edu/abs/hep-th/9809187 http://suriya.library.cornell.edu/abs/hep-th/9812127
N = 2 EXTREMAL BLACK HOLES:
http://suriya.library.cornell.edu/abs/hep-th/9508072
CHERN-SIMONS GAUGE THEORY AS A STRING THEORY:
http://arxiv.org/PS_cache/hep-th/pdf/9207/9207094.pdf

空间感知

Robertson, L.C.的小组所关注的空间感知的问题,对于启动神经元的多能性增强是非常关键的一个途径。

http://socrates.berkeley.edu/~lynnlab/experiments.htm
http://krsna.lamost.org/engine/node/13

Effects of Perceived Space on Spatial Attention
Robertson, L.C. & Kim, M. (1999). Psychological Science

ABSTRACT: This study demonstrates that a perceptual illusion that alters the perceived length of two lines also affects spatial attention. We used a cuing method that was introduced to study space- versus object-based attention. Two parallel lines of equal length were placed so that the distance between them was equal to the length of the lines. We then added a scene with depth cues to produce a strong illusion that one line was longer than the other. The results showed that spatial attention is distributed in space as it is perceived and altered by perceptual organization. These data have implications for assumptions concerning the spatial medium that guides attention and the role of depth and distance cues in spatial orienting, as well as for understanding attentional sysmtes related to neuropsychological functions that respond to space and objects.

视觉被补偿?抑或视觉的重新定义?

下面这个实验暂时没找到更详尽的报道。
如果该实验能够确定地排除其他因素而导致现象可靠,那么很多传统的属于练功修习范畴的现象,就不是多么虚诞的传闻。 甚至北大陈守良先生几十年所专致研究的特异功能也因此可以有与之相揭发之处。
大概最有意思的还是研究者怎么去解释或者选择什么样的途径去考虑这个现象:
一个可以明确诊断由于眼睛受损而导致在其视野当中存在盲区的患者,如果他把手放置在该盲区,则其在该盲区的视力有确切地提高。
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科学的边缘

前面试图针对理解本身来讨论,但刚才不幸看到一个案例,不得不再回到所谓民间科学的问题。
这个所谓量子研究所( http://www.ioq.cn/ )的主人高山大概是一个电子技术方面的专家,一眼看到其首页上抱怨被arXiv列入黑名单,呵呵,一个有趣的未必偶然的规律是,在国内凡是稍微带点技术含量的非主流研究人物,大都是工科的背景,很少见到纯理科背景还具有如此勇气者:)
很有些意思的是他和't Hooft的几句“交锋”(2004/8/13)
I can smell wrong papers from a distance
I have no time to read the paper.
The paper is nonsense. The idea is utterly wrong.
高山的回复:
Sir, remember, a man like you will never understand the mystery of Nature.
(A frog in the well will never see the whole sky. ---from an old Chinese aphorism)

一种普遍的爱好

在今天的arXiv上看到一个显眼的大题目:How and Why the Universe Began( http://arxiv.org/abs/physics/9904054 ),呵呵。
有意思的问题不在于民科现象,而在于,思维何以属于一种普遍的爱好?而思维是否具有好一些的能行性并不重要,世界上凡是属于多粒子系统的现象,本来就是具有内在分布的。
这个问题令我想起将近1岁的小侄女,这一段总是强烈地要求获得打电话的实践机会,一旦抱住话筒,她可以叽里呱啦地用爪洼语说上1小时。
很难说她单纯只是要模仿,好奇和实现,简直就是人类与生俱来的要求。

为了一个专致的目的,暂且剥掉一般所谓民间科学当中参杂的功利驱动因素,一个思维事件的展开,无论如何,是需要一个内在的驱动因素的。例如那个大题目,本身就是代表着一种典型的驱动力:呈现在日常言语当中的问题。

新添新闻汇集

在右边可以看到新闻汇集,点击依来源分类,可以看到我所选择的各个站点的最新文章,每隔24小时自动更新一次。
可惜的是驻在blogspot的国内连不上,那帮搞过滤的人够TM变态的!!

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