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1. chinaXiv:202101.00003 [pdf]

On dark matter

Xian-Qiao Yu
Subjects: Physics >> The Physics of Elementary Particles and Fields

In this article, I shall propose an enlightening view on the origin of dark matter abundance, in which I introduce a neutral primordial field, which is a new field beyond the standard model. All the standard model elementary particles are produced spontaneously from this field in the Big Bang epoch of the universe and then these produced elementary particles decayed or annihilated in the well-known standard model interactions. The relic of the primordial field appears in a form of vacuum energy can not only give naturally the correct abun- dance of dark matter in the present universe, but provide a natural solution to the cosmological constant problem as well. We find that the conventional methods of detecting dark matter either fail or have great difficulties to detect the remaining vacuum energy of the primordial field, and how to confirm the existence of the remaining energy of the universe’s original energy in experiment is still an open problem.

submitted time 2021-10-08 Hits11378Downloads1003 Comment 0

2. 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 2021-10-07 Hits5638Downloads1067 Comment 0

3. chinaXiv:202105.00070 [pdf]

Copula熵:理论和应用

马健
Subjects: Statistics >> Mathematical Statistics
Subjects: Computer Science >> Computer Application Technology
Subjects: Information Science and Systems Science >> Basic Disciplines of Information Science and Systems Science

统计独立性是统计学和机器学习领域的基础性概念,如何表示和度量统计独立性是该领域的基本问题。Copula理论提供了统计相关性表示的理论工具,而Copula熵理论则给出了度量统计独立性的概念工具。本文综述了Copula熵的理论和应用,概述了其基本概念定义、定理和性质,以及估计方法。介绍了Copula熵研究的最新进展,包括其在统计学四个基本问题(结构学习、关联发现、变量选择和时序因果发现等)上的理论应用。讨论了四个理论应用之间的关系,以及其对应的深层次的相关性和因果性概念之间的联系,并将Copula熵的(条件)独立性度量框架与基于核函数和距离的相关性度量框架进行了对比。简述了Copula熵在水文学、环境气象学、生态学、化学信息学、认知神经学、系统生物学、老年医学、公共卫生学、经济政策学、政治学,以及能源工程、制造工程、可靠性工程、通讯工程、测绘工程和金融工程等领域的实际应用。

submitted time 2021-10-05 Hits10172Downloads1392 Comment 0

4. chinaXiv:202107.00009 [pdf]

基于过程数据的问题解决能力测量及数据分析方法

刘耀辉; 徐慧颖; 陈琦鹏; 詹沛达
Subjects: Psychology >> Psychological Measurement

问题解决能力是指在没有明显解决方法的情况下个体从事认知加工以理解和解决问题情境的能力。对问题解决能力的测量需要借助相对更复杂、更真实、具有可交互性的问题情境来诱导问题解决行为的呈现。使用虚拟测评抓取问题解决的过程数据并分析其中所蕴含的潜在信息是当前心理计量学中测量问题解决能力的新趋势。首先,回顾问题解决能力测量方式的发展:从纸笔测验到虚拟测评。然后,总结对比两类过程数据的分析方法:统计建模法和数据挖掘法。最后,从非认知因素的影响、多模态数据的利用、问题解决能力发展的测量、其他高阶思维能力的测量和问题解决能力概念及结构的界定五个方面展望未来可能的研究方向。

submitted time 2021-10-04 Hits4003Downloads362 Comment 0

5. chinaXiv:202104.00128 [pdf]

On the Dynamic Effect of Infinite Redshift Surface: Lorentz Factor Analysis Method

Jiayu NI; Yuan Tu
Subjects: Physics >> Geophysics, Astronomy, and Astrophysics

The generation of infinite redshift surface is due to the singularity of the Lorentz transformation, according to this fact, analyzing the singularity of the parameters in the Lorentz transform factor, which is named the Lorentz factor analysis method in this paper, can be used to research the dynamic effect of the infinite redshift surface. In this paper, the method is applied to the Reissner-Nordstrom and Kerr-Newman black hole spacetime, which finds that the infinite redshift surface will expand and contract with the observer's radial motion, and the corresponding equations are given clearly. A new proof of the inaccessibility of the time-like singularity in a charged black hole is given, and the inaccessibility of the time-like singularity is proved only related to the electrical nature, it has nothing to do with rotation. The study result of space-like quasi-circular motion observer shows that the infinite redshift surface is consistent with that of the static observer at infinity in this case. The minimum blueshift radius which is proposed in the study of the observer who escapes at the speed of light in normal spacetime, it makes a stronger constraint on black hole parameters than traditional condition. This is a possible reason why it is difficult to form an intermediate-mass black hole, discussion about it can be found at the end of the paper.

submitted time 2021-10-04 Hits8344Downloads573 Comment 0

6. chinaXiv:202109.00056 [pdf]

接种还是不接种疫苗?一项对待不确定性“趋避冲突”的态度调查

杜思源; 戴亦馨; 李佩威; 赵宁; 李纾; 郑昱
Subjects: Psychology >> Applied Psychology

[目的] 测量民众接种新冠病毒疫苗的真实意愿与常规态度调查方法所测出来的接种意愿的差异。 [方法] 我们于2021年1月22日至27日调查了全国30个省/市/自治区(除西藏自治区)共3123人对接种新冠病毒疫苗(以下简称疫苗)的意愿。 [结果] 在我国接种疫苗的早期,民众对接种疫苗的意愿并不如预期般乐观,被调查人群中选择“现在不接种”和“观望后再决定”的人数超过了半数。 [结论] 研究者应慎重选择调查民众疫苗接种真实意愿的调查方法,建议相关部门要对民众的“接种迟疑”有充分的预判和准备。

submitted time 2021-09-24 Hits1849Downloads188 Comment 1

7. chinaXiv:202107.00032 [pdf]

The Relationships among Structural Social Support, Functional Social Support, and Loneliness in Older Adults: Analysis of Regional Differences based on a Multigroup Structural Equation Model

Haifeng Li; Cong Wang
Subjects: Psychology >> Social Psychology

Objective: This study investigated the relationship between structural social support and loneliness and explored whether functional social support had an intermediate role therein. It also employed a multigroup structural equation model to compare mediation models among older adults living in cities, towns, and rural areas. Methods: Using a self-made demographics questionnaire, the structural-functional social support scale, and the 3-item UCLA loneliness scale, this study collected information from 1,325 older adults identified via convenience sampling. Results: The results showed that: (1) compared with older adults living in towns, older urban and rural adults had higher structural social support and experienced less loneliness, while older adults’ functional social support showed no difference among the three regions (2) An analysis of the models of regional differences indicated that functional social support served as a full mediator in the relationship between structural social support and loneliness in urban older adults, and a partial mediator for older adults living in towns and rural areas. Conclusion: The relationship between structural social support and loneliness is mediated by functional social support, and this mediation model varies between older adults in cities and towns/rural areas. This study helps us understand possible mechanisms through which structural social support impacts loneliness. It suggests that nursing strategies for older adults should be adjusted according to region and direct greater focus on the function (or quality) of the social support network and on older adults living in towns.

submitted time 2021-09-09 Hits3919Downloads436 Comment 0

8. chinaXiv:202107.00026 [pdf]

数理心理学第一公设:事件结构式

高闯; 马安然; 魏薇; 德力达尔
Subjects: Psychology >> Cognitive Psychology
Subjects: Psychology >> Experimental Psychology
Subjects: Psychology >> Other Disciplines of Psychology

“实验实证纲领”与 “理论纲领” 属于科学关键纲领。心理学仍处于“实验实证纲领”主导的实验阶段,追求公理、自洽完备的数理架构是内驱目标,也是 APA 的统一性心理学(Unifying Psychology) 核心诉求。“数理心理学”提出关键数理公设,演绎心理学基础问题,并与经典发现惊奇一致:知觉功能结构、语义编码、学习实验的控制结构、知识的结构体系、信息通道完备性。“事件结构式”由于能够串联起物质信息结构表达、信息认知加工机理的底层逻辑,而成为首要公设。这开辟了利用公理公设演绎心理机制的新途径。基于这一原创性,本文将综述事件结构式的数理成果,并拓展其延伸性推论。

submitted time 2021-08-12 Hits4988Downloads369 Comment 0

9. chinaXiv:202108.00004 [pdf]

语言产生中词频效应老化的神经基础与时间进程

章丽娜; 宣宾
Subjects: Psychology >> Cognitive Psychology

词频效应指语言产生中人们对高频词汇的加工比低频词汇更快更准确的一种现象,它可能发生在语言产生中的不同阶段。对青年人和老年人词频效应上的不同特点和加工机制进行比较,可以考察语言产生中的认知老化机制。通过语言产生理论可对词频效应的老化进行预测,提出词频效应在个体发展和老化阶段的相对稳定性,分析老化导致词频效应相关的神经基础和加工时间进程的改变。未来研究可进一步分离词频效应与习得年龄效应对语言产生老化的影响,并扩展至神经退行性疾病患者中。

submitted time 2021-08-04 Hits1704Downloads155 Comment 0

10. chinaXiv:202107.00011 [pdf]

Properties of several fuzzy set spaces

Huan Huang
Subjects: Mathematics >> Mathematics (General)

This paper discusses the properties the spaces of fuzzy sets in a metric s- pace equipped with the endograph metric and the sendograph metric, re- spectively. We fist discuss the level characterizations of the Γ-convergence and the endograph metric, and point out the elementary relationships among Γ-convergence, endograph metric and the sendograph metric. On the basis of these results, we present the characterizations of total boundedness, rel- ative compactness and compactness in the space of compact positive α-cuts fuzzy sets equipped with the endograph metric, and in the space of com- pact support fuzzy sets equipped with the sendograph metric, respectively. Furthermore, we give completions of these two kinds of spaces, respectively.

submitted time 2021-08-01 Hits4422Downloads314 Comment 0

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