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1. chinaXiv:202006.00039 [pdf]

中文版工作记忆容量测量任务— 自动化运算广度任务”的信效度检验

梅高兴; 肖寻; 陈仕语; 苟丽娜; 李席英
Comment:引用格式: 梅高兴,肖寻,陈仕语,等. 中文版工作记忆容量测量任务—“自动化运算广度任务”的信效度检验[J] . 贵州师范 大学学报( 自然科学版) ,2021,39( 4) : 98-103.[MEI G X,XIAO X,CHEN S Y,et al. Reliability and validity of a Chinese version of the automated version of the operation span task[J] . Journal of Guizhou Normal University ( Natural Sciences) ,2021,39( 4) : 98- 103.]
Subjects: Psychology >> Experimental Psychology

采用基于 MATLAB 软件环境开发的简体中文版的“自动化运算广度任务”和瑞文推理测验对 102 名大学生进行施测,其中 86 名被试平均约 8 d 后进行重测。结果显示: 简体中文版“自动化运算广度任务”的 Cronbach sα 内部一致性信度系数为 0. 670,重测信度为 0.666; 采用瑞文推理测验作为效度效标,将瑞文推理测验得分与总广度得分的皮尔逊相关分析显示,二者在初测( r = 0. 33,P < 0. 01) 和重测( r = 0. 39,P < 0. 001) 均呈显著正相关。结论: 简体中文版的“自动化运算广度任务”具有较好的信效度, 操作简便, 可方便测量个体的工作记忆容量。该任务程序可以在 https: / /www.labxing.com /lab /695 /data 网站免费下载使用。

submitted time 2021-07-28 Hits17909Downloads2592 Comment 0

2. chinaXiv:202107.00034 [pdf]

数字空间联结的动态性及其内在机制

颜丽珠; 陈妍秀; 刘勋; 傅世敏; 南威治
Subjects: Psychology >> Cognitive Psychology

数字空间联结一直是认知心理学领域研究的热点之一。探索数字空间联结的一个重要指标为空间-数字反应联合编码(spatial-numerical association of response codes,SNARC)效应(左/右手对小/大数反应更快更准确)。以往研究已验证SNARC效应的普遍性及其在方向上的灵活性,并提出多种理论解释。此外,SNARC效应在加工阶段上也具有灵活性,其原因可能有:(1)加因素法则的理解偏差、(2)观察的角度单一、(3)观察效标的差异、(4)使用任务的差异。结合以上因素,提出双阶段(数量信息的空间表征、空间表征到反应选择)加工模型,不同的操控因素分别作用于两个阶段可能是引起SNARC效应灵活变化的核心原因。未来研究可从对比任务差异、引入不同干扰因素等方面进一步验证双阶段加工模型,并结合认知神经科学技术揭示数字空间联结灵活性的内在神经机制。

submitted time 2021-07-27 Hits163Downloads80 Comment 0

3. chinaXiv:202107.00011 [pdf]

Characterizations of compactness in fuzzy set spaces

Huan Huang
Subjects: Mathematics >> Mathematics (General)

In this paper, we mainly discuss characterizations of total boundedness, relative compactness and compactness in fuzzy set spaces.

submitted time 2021-07-22 Hits2258Downloads139 Comment 0

4. chinaXiv:202107.00008 [pdf]

GT198蛋白是抗癌化药和抗癌草药的靶点

庞峻峰; 高洁; 张立勇; Nahid F. Mivechi ; 柯蓝
Subjects: Medicine, Pharmacy >> Pharmacology

肿瘤血管生成是癌症的一个特征。一些抗血管生成的抗癌药物已被证明临床有疗效。我们之前的研究显示,在包括口腔癌在内的人类实体瘤中,GT198 蛋白(基因符号PSMC3IP,又称为Hop2)是一个诱导血管生成的癌蛋白。本研究结果表明,十几种临床抗癌化疗药物,和几种临床成功的抗癌草药,都能直接抑制GT198蛋白靶点。GT198是一个能与DNA结合的DNA修复蛋白。利用体外DNA结合法检测GT198活性,我们测试了129个美国NCI收集的临床抗癌化疗药物。发现体外直接抑制GT198的化药包括但不限于米托蒽醌、多柔比星(阿霉素)、紫杉醇、依托泊苷、放线菌素D和伊马替尼(格列卫)。紫杉醇和依托泊苷具有较高的结合亲和力,而多柔比星由于竞争性抑制GT198,具有较高的结合效力。由于GT198与DNA拓扑异构酶有蛋白序列同源性,而DNA拓扑异构酶是过去认为的药物靶点,因此,GT198蛋白很可能是个以前未被认知的药物新靶点。为了寻求更高效的GT198抑制剂,我们进一步测试了几种抗癌草药的提取物。发现具有高亲和力和高效力的阳性抑制草药都是临床上已经有成功历史的抗癌草药,包括牙买加的多香果(Allspice)、中国的皂角刺(Gleditsia sinensis L.),和厄瓜多尔的BIRM。我们使用有机化学方法对多香果进行了部分纯化,证明用GT198为靶标,以体外DNA结合法追踪测活,可以高效快速纯化天然产物。综上表明,此项研究揭示了GT198是多种抗癌化药的新靶点。这项研究还提供了一个鉴定化合物与纯化天然产物的优异药物靶标。特别关键的是,这项研究为快速分离高效低毒的抗癌中草药提供了绝佳机会。

submitted time 2021-07-12 Hits3384Downloads136 Comment 0

5. 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 a new theory of dark matter, 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 abundance 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 2021-06-29 Hits6848Downloads763 Comment 0

6. chinaXiv:201904.00075 [pdf]

A Possible Modified Dispersion Relation

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 2021-06-26 Hits21752Downloads1013 Comment 0

7. chinaXiv:202106.00106 [pdf]

A fragment of Argoland from East Gondwana in the NE Himalaya

Ji’en Zhang; Wenjiao Xiao; John Wakabayashi; Brian F Windley; Chunming Han
Subjects: Geosciences >> Geology

Previous studies have concluded that a Trans-Tethyan oceanic subduction zone existed prior collision of India-Eurasian plates, between which the ocean lacked intervening continental slivers. In contrast, we present first geological evidence of Early Cretaceous shortening and Late Jurassic alkali magmatism constraining that the Longzi block, an extensive (>450 km E-W by ca. 130 km N-S) tract of the NE Himalaya is such a continental sliver. The Longzi block records overturned south-vergent folds in Triassic to Lower Cretaceous strata intruded by 136-123 Ma mafic, dioritic, and dacite dikes, constraining Early Cretaceous shortening. The shortening demonstrates the NE Himalayan locating in a compressional setting, rather than an extensional Indian passive continental margin at that time. Triassic strata of NW Australian affinity and Late Jurassic rocks sourced from north India record pre-rifting history. Rifting evidence includes 152.8 Ma alkali intrusive rocks, a Late Jurassic unconformity, and rapid changes in sediment thickness and apparent water depth of deposition recorded in Upper Jurassic strata. The rifting event is coeval with 152-155 Ma oceanic crust in the NE Indian Ocean and a Late Jurassic submarine escarpment with 1200 m of sediments offshore of NW Australia. These data may reflect rifting of the westernmost Argoland continent in NE Himalaya from East Gondwana, followed by collision with a N-dipping Trans-Tethyan intra-oceanic subduction zone in the Early Cretaceous, long before terminal continent-continent collision. The Mesozoic rifting-collision in the Himalayan region unambiguously presents archipelagic paleogeography in eastern Neotethyan, which underwent Cenozoic two-stage Indian-Eurasian collisional processes.

submitted time 2021-06-24 Hits3622Downloads217 Comment 0

8. chinaXiv:201907.00003 [pdf]

Sub-parallel ridge-trench interaction and an alternative model for the Silurian-Devonian archipelago in Western Junggar and North-Central Tianshan in NW China

Zhang, Ji'en; Chen, Yichao; Xiao, Wenjiao; Wakabayashi, John; Windley, Brian F.; Yin, Jiyuan
Subjects: Geosciences >> Geology

Plate boundary evolution and interpreted paleogeography commonly involve the interaction between oceanic ridges and trenches. Western Junggar and Central-North Tianshan, NW China, have previously been regarded as independent orogens, but this model was challenged by the discovery of their similar tropic-subtropic coral assemblages and of Precambrian and Early Paleozoic clasts transmitted from the Central Tianshan in Early to Middle Paleozoic sediments in SW Junggar, suggesting they had been in contact by then. The presence of Late Silurian-Early Devonian adakitic rocks in northern SW Junggar was explained by slab roll-back, which required an active subducting slab in SW Junggar. However, this model is inconsistent with the cessation of arc magmatism immediately after the adakitic magmatism indicating there was no subduction in SW Junggar at those times. By re-evaluating the relevance of four diagnostic features of modern Californian ridge subduction, we propose a new model to explain the Late Silurian-Early Devonian orogenic framework of NW China in terms of sub-parallel ridge-trench interaction. The transmitted clasts from Central Tianshan in Early Paleozoic sediments in SW Junggar, at the same time as the Late Ordovician and Middle Silurian coral assemblages, and the complementary accretionary complex in SW Junggar and magmatic arc in Central Tianshan, are all contributary evidence for an Early Paleozoic subduction system. This subduction zone was intruded by two 446-380 Ma double magmatic belts: 1. A ridge subduction-generated adakitic gabbro-basalt-andesite-diorite-granite-rhyolite suite that intruded a 504-446 Ma accretionary complex in SW Junggar, and 2. a magmatic arc in Central Tianshan. A buoyant subducting ridge rifted and separated these magmatic belts resulting in the opening of a new 414-325 Ma ocean, which is preserved in OIB- and MORB-type ophiolites in SW Junggar and North Tianshan. These geological and geochemical relationships resemble those generated by oceanic spreading in the modern Gulf of California, which led to separation of magmatic belts in Baja California and mainland Mexico. The new ocean split the Central Tianshan magmatic arc from the Early Paleozoic Mt. Xiemisitai-Barleik-Mayile accretionary complex in SW Junggar, which changed to a new passive continental margin that led to deposition of Devonian shallow marine-terrestrial sediments, and to cessation of magmatism at 379-349 Ma. These features, including the Middle Paleozoic orogenic architecture and the geochemical properties of specific magmatic rocks, indicate the development of a Late Silurian-Early Devonian sub-parallel-to-trench ridge subduction. This model not only interprets phenomena mentioned in the above earlier models, but also reconciles unresolved spatial relationships between Western Junggar and the Tianshan. Subsequent closure of the new ocean and subduction of its ridge in the Late Paleozoic gave rise to the archipelagic framework that we see today in NW China. An analysis of worldwide examples of sub-parallel ridge-trench interaction demonstrates that a ridge can undergo multiple episodes of subduction before a terminal ocean closure. In this context our new tectonic model for the western Junggar and Tianshan regions may provide an improved understanding of the structure and evolution of ridge-subduction events in ancient orogenic belts.

submitted time 2021-06-22 Hits7124Downloads1237 Comment 0

9. chinaXiv:202105.00069 [pdf]

Copositivity for a class of fourth order symmetric tensors given by scalar dark matter

宋义生; 李旭东
Subjects: Mathematics >> Mathematical Physics

In this paper, we mainly discuss the copositivity of 4th order symmetric tensor defined by scalar dark matter stable under a $\mathbb{Z}_{3}$ discrete group, and obtain an analytically necessary and sufficient condition of the copositivity of such a class of tensors. Furthermore, this analytic expression may be used to verify the vacuum stability for $\mathbb{Z}_{3}$ scalar dark matter.

submitted time 2021-06-16 Hits3734Downloads304 Comment 0

10. chinaXiv:202106.00029 [pdf]

多模态学习诊断建模:知识结构和学习风格的双重诊断

詹沛达
Subjects: Psychology >> Psychological Measurement

在技术增强学习环境中,多模态数据为实现对知识结构和学习风格的双重诊断提供可能性。为实现对多模态数据的分析,本研究以融合分析题目作答精度、作答时间(RT)和视觉注视点数(FC)为例,基于联合-交叉负载建模法提出三个多模态学习诊断模型并与已有模型进行对比。研究结果表明:(1)融合分析比独立分析更适用于提供平行信息的多模态数据;(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参数估计精度;(3)新模型可实现对知识结构和学习风格的双重诊断。总之,对多模态数据进行融合分析使得有关学习行为的诊断反馈更为全面和精准。

submitted time 2021-06-15 Hits3623Downloads346 Comment 0

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