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1. chinaXiv:202102.00021 [pdf]

定向遗忘的编码加工机制

寇东晓; 顾文涛
Subjects: Psychology >> Cognitive Psychology

有目的的遗忘(定向遗忘)需要耗费认知努力吗?有研究发现,定向遗忘可能是被动衰减的结果,即F项目(需要遗忘的项目)未获得有效复述是选择性复述了R项目(需要记住的项目)造成的,这一加工过程不需要认知努力;但也有研究表明,定向遗忘过程可能是遗忘线索诱发的对记忆加工的主动抑制,需要耗费认知努力,脑认知研究中发现的前额叶ERPs成分为这一机制提供了证据。还有一种观点认为,定向遗忘编码过程可能同时包含主动抑制与被动衰减,但是尚不清楚两种加工机制相互作用的方式。为进一步澄清定向遗忘编码阶段的认知机制,未来研究需要将非认知因素纳入考察,并关注不同人群的定向遗忘特征,在此基础上尝试解决理论争议。

submitted time 2021-02-28 Hits314Downloads163 Comment 0

2. chinaXiv:201904.00075 [pdf]

A new approach to characterize the violation of Lorentz invariance

胡锦文
Subjects: Physics >> Geophysics, Astronomy, and Astrophysics

本文引入了一个参量n来表征不同惯性系间光速的变化。为了满足众所周知的基本原理,又不违背一些可靠的实验结果,我们应该对n施加一些必要的约束。首先,重要的是,n的引入应该符合以下三个原则:(1)我们可以用一个规定的时钟同步来定义整个空间中的时间;(2)时间是均匀的,空间是各向同性的;(3)所有的惯性系统都是等价的,这是对狭义相对论(SR)思想的继承。在n的一些约束条件下,我们构造了一个满足惯性系对称性的一般坐标变换。近年来,许多理论都表现出对超高能量尺度下洛伦兹不变性的破坏的兴趣,例如量子引力,它暗示粒子的能量有一个有限值(称为普朗克能量),而不是从洛伦兹模型导出的无限值。因此我们构造一个n的表达式来描述洛伦兹模型的违逆。进一步,通过与著名的彩虹模型比较,我们发现本文推导的“最大能量”与彩虹模型假设的“最大能量”有一定的关系。

submitted time 2021-02-25 Hits13066Downloads525 Comment 0

3. chinaXiv:202102.00080 [pdf]

Development of X-ray spectrometer automatic adjustment system based on global optimization algorithm

Fei Zhan
Subjects: Physics >> Nuclear Physics

In high energy resolution X-ray spectroscopy beamlines of synchrotron radiation (SR) facilities and laboratory XAS/XES spectrometer, it is important to keep X-ray spectrometer operating in optimal conditions. The adjusting process is normally very time consuming due to the irregular light source beam point, and it is difficult to get global optimum. This study aims to develop an intelligent adjusting system based on global optimization algorithm for spectrometers on SR beamlines and on laboratory x-ray source. First of all, based on the two dimensional experimental data, automatic adjustment process was established. Then the automatic optimization was applied to adjust X-ray spectrometer practically, and upgraded iteratively. The online testing is carried out on a self-developed laboratory XAS spectrometer. Online tests results show that this automatic adjustment process converges to the optimal solution quickly, and the convergence time is about several dozens to hundreds steps, more efficient than manual optimization process. After automatic adjustment, we can get correct X-ray absorption spectrum based on the adjusted spectrometer.

submitted time 2021-02-25 Hits102Downloads44 Comment 0

4. chinaXiv:202011.00114 [pdf]

精神分析的主体间转向:理论特征与分歧

张巍; 郭本禹; 张磊
Subjects: Psychology >> History of Psychology

主体间理论是当代精神分析领域最重要的取向之一。与更传统的精神分析相比,其理论特征表现为从区分“内/外”空间到强调“之间”的空间、从“主体—客体”关系到“主体—主体”关系、从顿悟到行动、从基础主义和实证主义到诠释学和建构主义。尽管存在术语的混乱和观点的分歧,但精神分析的主体间转向几乎遍及各个流派,广泛影响了北美洲、欧洲和拉丁美洲的诸多分析师。未来的主体间理论需要保持开放的态度,持续与先前的理论、临床资料和其他学科领域对话。

submitted time 2021-02-22 Hits2135Downloads543 Comment 0

5. chinaXiv:202102.00004 [pdf]

黄河流域发展质量综合评估理论研究

张金良; 曹智伟; 金鑫; 李超群
Subjects: Hydraulic Engineering >> Basic Disciplines of Hydraulic Engineering

黄河流域是一个复杂的巨系统,其中要素众多,关系复杂,既相互联系又相互制约。人民治黄以来,流域治理保护成效显著,但仍存在一些突出问题,充分体现了“表象在黄河,根子在流域”,揭示了流域治理保护工作的复杂性、协同性和整体性。流域高质量发展需要打破传统“头痛医头、脚痛医脚”流域治理模式,从综合治理、系统治理、源头治理的角度开展更深入的研究,特别是亟需研究流域发展质量综合评估理论。本研究基于系统科学、信息论等基础理论,提出流域发展质量综合评估理论,构建了流域发展指数(Basin Development Index,BDI)及宏观-中观-微观三层的评价体系,探索流域巨系统演变规律,为流域治理与保护提供技术支撑和理论依据。

submitted time 2021-02-19 Hits179Downloads169 Comment 0

6. chinaXiv:202102.00029 [pdf]

从划分到螺旋:符号观点看动力系统熵与混沌.pdf

邹丹旦
Subjects: Physics >> General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.

本文从符号与信息的角度,对混沌动力系统的特性进行了分析。提出了基于集合划分的信息熵传递特性,对连续动力系统引入有限测量精度假设,由此得出形成混沌的两个必要机制:信息由小尺度向宏观大尺度的转移及宏观信息的不断耗散,并进而对物理系统中的信息耗散进行分析讨论。

submitted time 2021-02-14 Hits288Downloads120 Comment 0

7. chinaXiv:202011.00011 [pdf]

普萘洛尔修复即刻消退产生的二次创伤

王红波; 邢小莉; 王慧颖
Subjects: Psychology >> Physiological Psychology

恐惧消退能力的受损是创伤后应激障碍(posttraumatic stress disorder, PTSD)的标志之一。以往的研究表明, 相较于延迟消退, 恐惧获得后短时间内进行的消退训练不能形成长时程的消退记忆, 这一现象被称为即刻消退缺损。然而, 目前并不清楚这种缺损是一次性的, 还是会继续影响其后的重消退。实验1中, 大鼠在恐惧习得后1小时(即刻消退)或24小时(延迟消退)开始进行消退训练, 24小时后进行重消退, 再24小时后进行消退记忆的测试。结果显示, 与延迟消退相比, 即刻消退效果缺损, 并引起了第二天的重消退也出现了效果缺损。实验2中, 恐惧获得后立即给予大鼠盐水或β-肾上腺素受体阻断剂普萘洛尔(10 mg/kg, i.p.), 然后测试即刻消退和重消退的效果。结果显示, 普萘洛尔虽没有阻止即刻消退的缺损,但避免了重消退出现缺损。总之, 严重创伤后的即刻消退不但无法有效抑制恐惧反应, 还可能造成二次创伤, 会损害恐惧消退能力, 而普萘洛尔可修复即刻消退引起的重消退缺损。这些结果将有助于我们加深对PTSD病理机制和早期干预后果的认识。

submitted time 2021-02-12 Hits237Downloads387 Comment 0

8. chinaXiv:202102.00023 [pdf]

工作记忆表征精度加工需求对注意引导的影响

车晓玮; 徐慧云; 王凯旋; 张倩; 李寿欣
Subjects: Psychology >> Experimental Psychology

采用注意捕获范式,通过行为和事件相关脑电位(ERP)实验,探讨工作记忆表征精度加工需求对注意引导的影响,行为结果发现,在低精度加工需求条件下,只有一个工作记忆表征引导注意,且处于高激活状态的工作记忆表征产生的注意捕获大于低激活状态;而在高精度加工需求条件下,有两个工作记忆表征引导注意,且处于高、低激活状态的工作记忆表征产生的注意捕获没有差异。ERP结果显示,高精度加工需求条件下诱发的NSW和LPC大于低精度加工需求条件;在高精度加工需求条件下,干扰项与记忆项匹配比不匹配时,诱发更大的N2和更小的N2pc,而在低精度加工需求条件下,干扰项与记忆项匹配和不匹配时诱发的N2、N2pc没有差异。研究表明,工作记忆表征精度加工需求影响注意引导的机制可能是高精度加工需求下,工作记忆表征消耗的认知资源增加,搜索目标获得的资源减少,干扰项捕获的注意增加。

submitted time 2021-02-09 Hits441Downloads191 Comment 0

9. chinaXiv:202101.00080 [pdf]

两人和三人最后通牒博弈任务中嗓音吸引力对决策的影响

尚俊辰; 刘智慧; 王笑雨; 迟智超; 李卫君
Subjects: Psychology >> Cognitive Psychology

本研究用两人和三人最后通牒博弈任务探究男性嗓音吸引力对决策的影响。实验1发现,高吸引力的嗓音会提高被试对不公平分配方案的接受率。实验2发现,即使分配方案对第三方接受者公平,对被试不公平,第三方接受者的高吸引力嗓音仍然会提高被试对方案的接受率。综上,嗓音吸引力可以诱发类似面孔吸引力的“美貌津贴”效应。

submitted time 2021-02-01 Hits516Downloads256 Comment 0

10. chinaXiv:201910.00029 [pdf]

Stand up to Action: The Postural Effect of Moral Dilemma Decision-Making and the Moderating Role of Dual Processes

刘传军; 廖江群
Subjects: Psychology >> Social Psychology

Previous studies have demonstrated the possibility that when people are in standing than sitting postures, they have a stronger cognitive control propensity, making them inclined to agree more to sacrificing one innocent and saving more people. Furthermore, this postural effect can be moderated by dual processes. In three studies, participants read dilemma scenarios followed by a proposed behavior to sacrifice one innocent and save five or more people. The participants in sitting or standing postures were asked whether the described action was morally acceptable (moral judgment) and whether they would perform the described action (moral action). The results demonstrated that participants were more approving of the behavioral proposal in the moral action perspective than in the moral judgment perspective across the three studies. The hypothesized postural effect was found in a field study (Study 1) and replicated in a pre-registered replication study (Study 2) and further supported in an experimental study (Study 3). Compared with those in sitting postures, participants in standing postures expressed higher approval of the behavioral proposal compared to their sitting counterparts. Furthermore, the postural effect was dismissed when participants made moral decisions with a dual task to increase cognitive load, and it was reversed when they made moral decisions after deliberate consideration of the behavioral proposal (Study 3). The present research supports and extends the dual-process morality theory by demonstrating that body posture can affect moral decision-making; it also offers novel evidence revealing the moderating role of dual process on embodiment effects. It enriches our knowledge that morality is evolutionarily embodied in postures and that the dual process can moderate embodiment effects.

submitted time 2021-01-28 Hits20743Downloads1631 Comment 0

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