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1. chinaXiv:202106.00029 [pdf]

引入眼动注视点的联合-交叉负载多模态认知诊断建模

詹沛达
Subjects: Psychology >> Psychological Measurement

多模态数据为实现对认知结构的精准诊断及其他认知特征(如, 认知风格)的全面反馈提供了可能性。为实现对题目作答精度、作答时间(RT)和视觉注视点数(FC)的联合分析,本文基于联合-交叉负载建模法提出三个多模态认知诊断模型。实证研究及模拟研究结果表明:(1)联合分析比分离分析更适用于多模态数据;(2)新模型可直接利用RT和FC中信息提高潜在能力或潜在属性的估计准确性;(3)新模型的参数估计返真性较好;(4)忽略交叉负载所导致的负面结果比冗余考虑交叉负载所导致的更严重。

submitted time 2021-11-30 Hits4074Downloads588 Comment 0

2. chinaXiv:202111.00049 [pdf]

满招损,谦受益:7个体心理与社会文化作用机制

郑楚华; 汪鑫; 吴艳红
Subjects: Psychology >> Cognitive Psychology

谦虚是东西方文化下共同提倡的一种优秀品质和美德。已有研究发现,谦虚作为一种重要的心理属性,对个体的生活和工作产生了广泛的积极影响。这种影响效应及其功能机制可以从认知、动机和规范三个角度进行归纳、分析:“自知之明”的认知机制、“社会润滑剂”的动机机制和“传统美德”的规范机制。未来研究应该进一步探索谦虚的心理结构、分析谦虚功能体现的潜在边界条件、考察谦虚功能的神经基础。

submitted time 2021-11-29 Hits50Downloads26 Comment 0

3. chinaXiv:202112.00001 [pdf]

论文层次分类系统在期刊学科布局分析中的应用

廖宇(研究生); 沈哲思; 李立; 杨立英
Subjects: Library Science,Information Science >> Information Science

摘要:【目的】期刊学科布局是我国期刊建设现阶段的关键问题之一,为解决期刊层次学科分类体系在学科布局分析中的局限性,本文拟引入论文层次学科分类体系。【方法】采用对比分析的方式,对论文层次学科分类体系在期刊布局相关研究中的优势进行了例证。【结果】在期刊学科分布分析中,论文层次分类体系有效揭示了综合类期刊Nature和Science Bulletin以及专业综合期刊Science China-Chemistry和Journal of the American Chemical Society之间的明显学科分布差异和学科侧重。在学科演化分析中,我们通过论文层次分类体系的挖掘,揭示了Sensors从围绕传感器相关研究为主,拓展成为跨多个学科领域研究内容的期刊。针对期刊主题重叠的分析,我们发现《海洋学报》和《大气科学进展》这两本属于不同学科的期刊在诸多研究主题上存在重叠。在期刊影响力分析中,我们以JCR统计学和概率领域期刊为例,分析了两种分类体系下的期刊影响力排名差异,论文层次分类体系能更有效消除学科内部的引用差异,为期刊影响力评估提供更好客观的分类参考。【结论】相较于期刊层次分类体系,论文层次分类体系以论文为单位进行分类,粒度细、更新快、更加适用于期刊学科布局的研究实践。

submitted time 2021-11-29 Hits0Downloads0 Comment 0

4. chinaXiv:202111.00048 [pdf]

用于处理不努力作答的标准化残差系列方法和混合多层模型法的比较

刘玥; 刘红云
Subjects: Psychology >> Statistics in Psychology

文章采用模拟研究,分别在混合多层模型假设满足和违背的情境下,比较了混合多层模型方法与标准化残差系列方法在识别不努力作答和参数估计方面的表现。结果显示:(1)不存在不努力作答或其严重性低时,各方法表现接近;(2)不努力作答严重性高时,固定参数迭代标准化残差法普遍更优,混合多层模型法仅在假设满足且两种作答反应时差异大的条件下表现较好。建议实际应用中优先选择固定参数迭代标准化残差法。

submitted time 2021-11-29 Hits49Downloads22 Comment 0

5. chinaXiv:202112.00002 [pdf]

深度学习损失函数地貌分析研究进展

梁若冰; 刘波; 孙越泓
Subjects: Mathematics >> Control and Optimization.

在机器学习和数学优化研究领域, 深度学习优化问题易优性的数学解释极具挑战性. 损失函数存在高维、非凸、不光滑等特质性, 然而也能通过梯度下降法搜索到全局最优值. 损失函数地貌分析成为揭示深度学习优化问题易优性本质的重要研究方向. 为促进可解释、可信的深度学 习在更关键领域的应用, 本文回顾了损失函数地貌特征(局部极小点的数量和空间分布、最优点之间的连通性、临界点的最优性)、梯度下降法收敛性、以及损失函数地貌可视化等方面的研究进展和挑战.

submitted time 2021-11-29 Hits0Downloads0 Comment 0

6. chinaXiv:202111.00046 [pdf]

自闭症谱系障碍个体的社会动机缺陷

徐慧; 王滔
Subjects: Psychology >> Developmental Psychology

自闭症谱系障碍(ASD)是一种源于儿童期的神经发育障碍,社会交往障碍是其核心特征,与社会动机缺陷密切相关。社会动机是引导个体社会行为的强大动力,主要表现为社会定向、社会奖赏和社会维持。现有研究表明,ASD个体的社会动机发展存在缺陷,他们对社会刺激的注意偏向减少,不能主动寻求和体会社会互动带来的快乐,且缺乏维持社会关系的行为策略等。然而,相关研究结果受到个体特征、环境和实验设计等因素的影响。研究者未来应综合考虑这些影响因素,加强对ASD个体社会动机理论的整合研究,以便全面系统地了解ASD个体的社会动机缺陷。

submitted time 2021-11-27 Hits159Downloads43 Comment 0

7. 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 2021-11-27 Hits6937Downloads464 Comment 0

8. chinaXiv:202111.00047 [pdf]

抑制功能在疼痛中的作用

刘博; 程香娟; 岳衡; 包呼格吉乐图
Subjects: Psychology >> Cognitive Psychology

自生物心理社会模型提出以来,利用心理因素预防和治疗疼痛备受关注,越来越多的研究表明抑制功能在疼痛发展和恢复阶段起关键作用。疼痛诱发的自我防御机制通过争夺认知资源影响抑制功能,反之低抑制功能个体在应对疼痛干扰中表现较差,进而影响着疼痛的预期和学习。现有关于抑制功能影响疼痛的研究主要基于相关设计,未来应进一步明确二者的因果关系。深入理解疼痛与抑制功能相互作用的认知机制有助于指导抑制功能对慢性疼痛的靶向干预。

submitted time 2021-11-26 Hits144Downloads38 Comment 0

9. chinaXiv:202111.00034 [pdf]

Revisit of Hsianwenia wui (Cyprinidae: Schizothoracinae) from the Pliocene of Qaidam Basin

BI Dai-Ran; WU Fei-Xiang; WANG Ning; CHANG Mee-Man; FANG Geng-Yu
Subjects: Biology >> Zoology

The Qaidam Basin is a key area for understanding the paleoenvironmental and faunal history of the Tibetan Plateau. The fossil schizothoracine fish, Hsianwenia wui, evolved extraordinarily thickened bones to adapt to the aridification of the Qaidam Basin during the Pliocene. However, the nature of the bone thickening itself remains elusive. To promote the further investigation of the physiological mechanism of the pachyostosis and the phylogenetic interrelationships of Hsianwenia and all relevant cyprinids, here we present a comprehensive morphological study of Hsianwenia. We have new information on the anterior part of the cranial cavity, a large supraneural 3 in the Weberian apparatus, numerous procurrent caudal fin rays supported by the preural centrum (Pu) 5, and a neural arch on Pu2. We also find the differentiated pattern of the bone-thickening: the pachyostosis exists in the endoskeleton but not in the dermal skeleton; it is more obvious in ventral bones than in dorsal ones, when the thickening is present in the dorsally and ventrally grouped endoskeletal bones (e.g., the epineural and epipleural intermuscular bones). Considering the integrity of musculoskeletal system manipulating the chewing activities, we suspect that the thickened pharyngeal jaws and the hard food processing might be associated with the unique hind protrusion (cleithral “humeral” process) of the dermal pectoral girdle of Hsianwenia.

submitted time 2021-11-26 From cooperative journals:《古脊椎动物学报》 Hits151Downloads55 Comment 0

10. chinaXiv:202111.00035 [pdf]

A revision of the eggshell fragment of Spheroolithus megadermus from Laiyang, Shandong Province, China

ZHANG Shu-Kang
Subjects: Biology >> Zoology

In 1958, a special type of dinosaur egg was discovered in Zhaotuan, Laiyang, Shandong Province, China. Although only a large eggshell fragment was collected, its extremely large thickness indicated that the eggshell fragment represented a new ootaxon. In previous studies, it was named Spheroolithus megadermus and assigned to the oogenus Spheroolithus under the oofamily of the Spheroolithidae based on the microstructure in radial view. However, a comparative study of the microstructure in tangential views between the large eggshell fragment from Laiyang and the recently reported Multifissoolithus from Zhejiang Province, China and Yamaguchi, Japan revealed that all of them have roughly paralleled and wavy clefts. Therefore, this study reassigned the large eggshell fragment from Laiyang to Multifissoolithus of the Dongyangoolithidae and discussed its unique compact layer near the eggshell’s inner surface, as well as the chronological and spatial distribution of dongyangoolithid eggs. The reassignment of the holotype of Spheroolithus megadermus also indicates that the referred specimen of Spheroolithus megadermus from Changtu, Liaoning Province becomes the holotype of a new oospecies Spheroolithus quantouensis.

submitted time 2021-11-26 From cooperative journals:《古脊椎动物学报》 Hits124Downloads43 Comment 0

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