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1. chinaXiv:202201.00061 [pdf]

学步期焦虑影响5岁幼儿创造力:一般认知和掌握动机的链式中介作用

成童; 程南华; 王美芳; 王争艳
Subjects: Psychology >> Developmental Psychology

儿童早期焦虑是一种常见的心理卫生问题,影响个体中央执行功能的发展,而个体中央执行功能所表现的认知能力的发展通常反映出个体创造性问题解决的过程。本研究采用追踪研究设计,探讨了学步期儿童焦虑对其学龄前期创造力的长时影响及其潜在作用机制。来自北京的96个家庭(男孩42名,女孩54名)参与了本研究。在儿童1岁和2岁时,母亲填写中国版《12~36月龄幼儿情绪社会性评估量表》和家庭基本信息调查表。在儿童2岁时,采用贝利婴幼儿发展量表评估幼儿的一般认知能力;在儿童3岁时,母亲报告儿童掌握动机情况;在儿童5岁时,采用托兰斯活动与动作创造性思维测验评估儿童的创造力。研究结果表明:(1)儿童学步期焦虑(广泛性焦虑和分离焦虑)可以显著负向预测其5岁时的创造力;(2)一般认知能力和掌握动机在儿童学步期焦虑(广泛性焦虑和分离焦虑)和学前期创造力之间的链式中介作用成立;(3)儿童学步期广泛性焦虑还可以通过直接负向预测掌握动机,从而对其5岁创造力的表现产生消极影响。

submitted time 2022-01-21 Hits108Downloads28 Comment 0

2. chinaXiv:202201.00063 [pdf]

基于伪装原理研究无意识视觉运动加工的方法

赵佳旭; 鲍敏
Subjects: Psychology >> Cognitive Psychology

研究提出一种新的连续闪烁抑制(CFS)范式,利用透明度混合(alpha blending)原理,使目标刺激的颜色与相应位置的掩蔽刺激的颜色时刻保持一致。研究随机招募了8名被试,向其优势眼呈现Mondrian图像序列,非优势眼呈现固定速率运动的多个正方形。结果表明目标为多运动点动态刺激时,该范式依然具备掩蔽作用,且当目标刺激与相应位置的掩蔽刺激的颜色完全一致时,掩蔽效果最好,证明这种新范式比传统CFS范式对动态刺激的掩蔽作用更好。相比以往修改CFS掩蔽刺激的思路,该范式为研究无意识视觉运动加工提供了新方法,且适用性更广。

submitted time 2022-01-21 Hits102Downloads24 Comment 0

3. chinaXiv:202201.00062 [pdf]

员工真诚对同事关系的双刃剑效应:共事时间的调节作用

汤一鹏; 贾荣雯; 龙立荣; 任芷宇; 蒲小萍
Subjects: Psychology >> Management Psychology

目前普遍认为员工在职场中的真诚有助于该员工与同事建立良好的关系。本研究提出员工真诚对同事关系的影响很可能积极和消极并存,其作用效果取决于员工与同事之间的共事时间。基于社会渗透理论并整合归因的文献,本研究认为同事怀疑和同事信任是员工真诚影响同事关系的关键中介机制。为检验本研究理论模型假设,采用轮询问卷法(round-robin survey)和实验法分别开展两个独立调研。结果发现:在共事时间较短的情况下,员工真诚会引发同事怀疑降低同事信任,减少人际帮助并增加人际排斥。在共事时间较长的情况下,员工真诚则有助于打消同事怀疑增加同事信任,增多人际帮助并减少人际排斥。通过引入共事时间作为调节变量,本研究发现员工真诚对同事关系的影响由消极转化为积极需要经过足够长时间的共事才能实现。

submitted time 2022-01-21 Hits96Downloads21 Comment 0

4. chinaXiv:202201.00064 [pdf]

Determination of neutron-skin thickness using configurational information entropy

Ma, Chun-Wang ; Liu, Yi-Pu; Wei, Hui-Ling; Pu, Jie; Cheng, Kai-Xuan; Wang, Yu-Ting
Subjects: Physics >> Nuclear Physics

Configurational information entropy (CIE) theory was employed to determine the neutron skin thickness of neutron-rich calcium isotopes. The nuclear density distributions and fragment cross-sections in 350 MeV/u 40-60Ca + 9Be projectile fragmentation reactions were calculated using a modified statistical abrasion-ablation model. CIE quantities were determined from the nuclear density, isotopic, mass, and charge distributions. The linear correlations between the CIE determined using the isotopic, mass, and charge distributions and the neutron skin thickness of the projectile nucleus show that CIE provides new methods to extract the neutron skin thickness of neutron-rich nuclei.

submitted time 2022-01-21 From cooperative journals:《Nuclear Science and Techniques》 Hits94Downloads18 Comment 0

5. chinaXiv:202201.00065 [pdf]

Anisotropy flows in Pb–Pb collisions at LHC energies from parton scatterings with heavy quark trigger

Wang, Hai; Chen, Jin-Hui
Subjects: Physics >> Nuclear Physics

By implementing an additional heavy quark–antiquark pair production trigger in a multiphase transport (AMPT) model, we study the effect on anisotropy flows of identified particles with a focus on charged particles and quarkonium (J/Ψ and Υ). A systematic increase in the collision rate for active partons in the AMPT model with such an implementation has been observed. It leads to a slight increase of identified particles anisotropy flows as a function of transverse momentum (pT ) and rapidity, and gives a better description of the experimental data of elliptic flow toward larger pT . Our approach provides an efficient way to study the heavy quark dynamics in the AMPT model at LHC energies.

submitted time 2022-01-21 From cooperative journals:《Nuclear Science and Techniques》 Hits94Downloads19 Comment 0

6. chinaXiv:202201.00060 [pdf]

利他行为的遗传基础:来自定量遗传学和分子遗传学的证据

李海虹; 尚思源; 谢晓非
Subjects: Psychology >> Social Psychology

利他行为是指个体耗损自身资源帮助他人的行为。近年来,研究者关注利他行为的遗传基础,基于定量遗传学和分子遗传学两类研究方法,探讨了利他行为的遗传率,证实利他行为确实受遗传所影响,以及发现了四类利他候选基因,包括多巴胺受体基因、5-羟色胺转运体基因、催产素受体基因、和加压素受体基因,并在此基础上讨论环境在基因对利他影响中的作用。一方面基因与环境相关联,二者共同影响利他行为,即基因-环境相关;另一方面基因的效应受环境影响,即差别易感性模型。未来研究需拓展神经生物系统探索,注重全基因组研究、元分析和机制探索,和进行系统的环境干预实践。

submitted time 2022-01-20 Hits112Downloads24 Comment 0

7. chinaXiv:202201.00059 [pdf]

Reappraisal of the largest ctenochasmatid Moganopterus zhuiana L?et al., 2012

GAO Dian-Song; JIANG Shun-Xing; XU Li1 CHENG Xin; YANG Li-Li; JIA Song-Hai; WANG Xiao-Lin
Subjects: Biology >> Zoology

Moganopterus zhuiana L?et al. 2012 was erected as a member of the Boreopteridae, which was questioned by different researchers shortly after the publication. Although the new assignment to the Ctenochasmatidae is widely accepted by pterosaur researchers, some characteristics still require a detailed description. Here, the holotype of this taxon is restudied, and some ambiguous characteristics are re-identified. The diagnosis of this taxon has been revised as the following: a large ctenochasmatid pterosaur, which can be distinguished from other members of this clade by a single autapomorphy: an elongated rod-like parietal crest that extends posterodorsally, forming an angle of about 15?with the ventral margin of the skull. This taxon can be further distinguished from other ctenochasmatids on the basis of the following combination of characteristics: straight occlusal surfaces of the upper and low jaws; presence of a low premaxillary crest confined anterior to the nasoantorbital fenestra; rostrum about two thirds of the skull length; nasoantorbital fenestra occupying slightly more than 20% of the skull length; about 100 slender teeth; and a mid-cervical length/width ratio of about 7. The wingspan of M. zhuiana has been re-estimated according to a simple regression equation for wingspan versus skull length in ctenochasmatids. It confirms that M. zhuiana, although smaller than previous thought, is still the largest known ctenochasmatid. When comparing the sizes of ctenochasmatids in the Jurassic and Cretaceous, ctenochasmatids showed a rough tendency to increase their sizes.

submitted time 2022-01-19 From cooperative journals:《古脊椎动物学报》 Hits128Downloads32 Comment 0

8. chinaXiv:202201.00043 [pdf]

新能源电力系统并网设备小扰动稳定分析(二):导出机理与稳定性分类探讨

宫泽旭; 艾力西尔·亚尔买买提; 辛焕海; 张欣; 鞠平; 袁小明; 屠竞哲; 傅闯
Subjects: Dynamic and Electric Engineering >> Electrical Engineering

本文第一部分从稳定性等价、标称性能和鲁棒性三个角度提出稳定分析方法/判据适应性的量化评估指标,并从物理上解释了评估指标的合理性。本文第二部分将进一步围绕同步机、变流器和双馈机组等典型电力系统并网设备,分析现有稳定判据的适用性及其导出机理(适用判据对应的失稳物理解释),并从主导输出变量角度探讨了系统稳定问题的分类。首先,利用所提评估指标,验证了现有同步机低频振荡和次同步振荡(包含SSO和SSR)的稳定分析方法和物理解释的合理性;其次,分析了变流器宽频振荡问题和双馈机组次同步振荡问题,探讨其适用的稳定判据及导出机理;最后,将传统基于相量的动态模型扩展到基于瞬时矢量的动态模型,并从极坐标下主导输出变量角度,将上述导出机理进行分类:相位主导的同步稳定(极坐标的极角方向)、幅值主导的电压稳定(极坐标的极轴方向)和它们组合的等幅相稳定三类。其中,同步稳定包括同步机的低频振荡、轴系主导的次同步振荡、变流器和双馈风机锁相环引起的振荡;电压稳定包括变流器外环、常规直流外环等引起的失稳;等幅相稳定则包含LC电路谐振、同步机或双馈机组经串补引起的次同步振荡、变流器内环和前馈引起的中高频振荡等。

submitted time 2022-01-19 Hits1694Downloads75 Comment 0

9. chinaXiv:202201.00044 [pdf]

新能源电力系统并网设备小扰动稳定分析(一):机理模型与稳定判据适用性

宫泽旭; 艾力西尔·亚尔买买提; 辛焕海; 王玮; 张欣; 陈东; 王冠中; 杨超然; 胡海涛
Subjects: Dynamic and Electric Engineering >> Electrical Engineering

新能源电力系统动态特性复杂,存在众多稳定分析方法及稳定判据。不同稳定判据的物理意义和适用范围是不同的,但目前难以从理论上回答各类稳定判据适合解决哪一类稳定问题,以及它们所对应的物理解释是否合理。本文分为两个部分,第一部分提出稳定判据的适用性评估方法,第二部分应用该方法分析现有稳定判据的适用场合,并尝试给出各类稳定问题的物理解释。本文第一部分首先回顾归纳了现有稳定判据的推演机理,以及各判据背后的物理意义。其次,从稳定性等价、标称性能和鲁棒性三个角度,探讨并提出了稳定判据的适用性三个定性原则,并提出了环路增益灵敏度指标对适用性原则进行量化。最后,以并网变流器为例,说明了若干阻抗判据的标称性能和鲁棒性并不等价,并探讨了其适用范围。电力系统中其它典型判据的适用性及其物理解释将在第二部分进一步展开探讨。

submitted time 2022-01-19 Hits1622Downloads79 Comment 0

10. chinaXiv:202201.00058 [pdf]

科研诚信外部规范视域:国家科技计划项目随机抽检的现实驱动与学理依据

刘胜利
Subjects: Management Science >> Science ology and Management

为从本质、源头和原理层面深化各方对“国家科技计划项目抽检”的经验认知,本研究基于科研诚信外部规范的理论视角,对其制度化实践的现实驱动和学理依据进行了系统整理和阐述,并从四个方面提出了建设性意见,以之促进形成群策群力、理性决策的制度实践氛围。论述对于“破四唯、五唯”时代科研管理实践和科学政策学理论建构,具有基础性参考意义。

submitted time 2022-01-19 Hits155Downloads31 Comment 0

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