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1. chinaXiv:201911.00094 [pdf]

Copositivity for 3rd order symmetric tensors and applications

刘佳蕊; 宋义生
Subjects: Mathematics >> Mathematical Physics

The strict opositivity of 4th order symmetric tensor may apply to detect vacuum stability of general scalar potential. For finding analytical expressions of (strict) opositivity of 4th order symmetric tensor, we may reduce its order to 3rd order to better deal with it. So, it is provided that several analytically sufficient conditions for the copositivity of 3th order 2 dimensional (3 dimensional) symmetric tensors. Subsequently, applying these conclusions to 4th order tensors, the analytically sufficient conditions of copositivity are proved for 4th order 2 dimensional and 3 dimensional symmetric tensors. Finally, we apply these results to present analytical vacuum stability conditions for vacuum stability for $\mathbb{Z}_3$ scalar dark matter.

submitted time 2019-11-23 Hits165, Downloads64, Comment 0

2. chinaXiv:201911.00096 [pdf]

共同情对灾后青少年亲社会行为的影响:感恩、社会支持和创伤后成长的中介作用

王文超; 伍新春
Subjects: Psychology >> Clinical and Counseling Psychology

因为雅安地震极重灾区芦山县的542称中学生为让试,在地震发生3.5年后,使用人际反应指数量表测查被试的共同情能力,连在震后4.5年使感恩问卷、社会关系网络问卷、伤口后成长问卷和亲社会行为问卷测查被试的感恩、社会支持、PTG和亲社会行为,从追踪的见解考察地震后青少年的共同情能力对亲社会行为的影响,连探索感恩、社会支持和创伤后成长(PTG)在其中的中介作用。结果显示,共同情可直接正向预测亲社会行为;共同情对亲社会行为的预测可分别通过感恩、社会支持和PTG的中介进行;共同情尚可以分别通过感恩经社会支持、感恩经PTG、社会支持经PTG、感恩经社会支持还通过PTG的链式中介对亲社会行为起到正向预测作用。立即更现提示,前途的创伤后心理辅导工作应更加关心青少年的积极心理和社会行为的进步。

submitted time 2019-11-21 Hits283, Downloads105, Comment 0

3. chinaXiv:201706.00761 [pdf]

神经科学偏见效应:但是重复性及其心理机制的探索

殷继兴; 胡传鹏
Subjects: Psychology >> Legality Psychology

神经科学的进步对其他学科和社会发生了重要的影响。虽然神经科学方法和表现研究方法都是探索人类思维和表现的有用手段并各有所长,但是神经科学的研究结果却可能引起人们过度的解读和信任。研究者发现,当有一结论使用神经科学结果作为证据时,比下行为对结果或者心理生理学指标作为证据时尤其让人信服,即使神经科学结果和该结论之间毫无关系,这种现象被叫做神经科学偏见(neuroscience bias)。通过系统回顾近年来关于神经科学偏见的研究,我们发现:(1)虽然神经科学偏见存在不过重复性的争论,但是该效应确实存在;(2)神经科学偏见的发生可能是因为个体倾向于还原论的解释(即使用小层次、粗略的体制来解释更高层次上的景象)和心理本质主义的影响(即使人们认为心理和表现的实质是神经活动)。神经科学偏见反映了群众对科学结果解读的偏,前途研究需要探索这种偏见的思想机制,所以引导科学结果的正确解读和使用。

submitted time 2019-11-05 Hits21642, Downloads2777, Comment 0

4. chinaXiv:201905.00013 [pdf]

人工智能基础理论的过去、现在和发展趋势思考

辛欣; 郭平
Subjects: Information Science and Systems Science >> Other Disciplines of Information Science and Systems Science

本文回顾了人工智能的进步历史,分析了目前国内外研究现状,指出了目前因深度上为表示的人工智能基础研究困境。包括可说性神经网络模型问题、网络模型的结构设计问题、些微样本学习问题相当。被来了以后人工智能发展趋势,认为基于统计物理思维构建协同学习系统可能是向通用人工智能的途径之一。

submitted time 2019-10-16 Hits1762, Downloads563, Comment 0

5. chinaXiv:201905.00003 [pdf]

浮躁应激损害对威胁刺激的注意解除

罗禹; 念靖晴; 鲍未; 张静静; 赵守盈; 潘运; 许爽; 张禹
Subjects: Psychology >> Cognitive Psychology

浮躁应激会增强个体对威胁刺激的注意偏向,但是急性应激是增强了针对威胁刺激的注意定向还是损害了针对威胁刺激的注意解除还不了解。依照研究下社会评估冷压任务和接触探测任务,结合事件相关电位技术,观急性应激对威胁刺激注意偏向影响的体会机制。在进行社会评估冷压任务后,应激组个体的状态焦虑和皮质醇浓度显著上升。在注意偏向中,应激组对威胁刺激的注意解除比控制组更慢,应激组和决定组在对威胁刺激的注意定向上无明显差异。ERP结果上,威胁刺激诱发应激组比控制组产生了再负的SPCN,在N2pc达到没有明显差异。应激组和决定组皮质醇增量的差别和N2pc、SPCN的组间差异均发生明显正相关。这些结果证明,浮躁应激增强对威胁刺激的注意偏向是因为那危害个体对威胁刺激的注意解除,立即也许是因为急性应激损害了和注意解除相关的前额-到网络的效用所致。

submitted time 2019-09-28 Hits11239, Downloads603, Comment 0

6. chinaXiv:201904.00087 [pdf]

德与德:德决策中的提问框架效应

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

德双加工理论预测关注德行的提问框架(德行为)下相比关注德性的提问框架(德判断)下,领导具有更高的心情卷入而会做出更偏向于义务论的决定或者对规范的敏感性更高;如果认知失调的行动模型则认为在有心理冲突性的境地下,领导在道德行动框架相比于道德判断框架下为实现失调减少会做出更偏离义务论的决定或者对规范的敏感性更没有。依照研究通过3单实验(毕竟N = 960)探索了立即一路德决策中的提问框架效应。试验1使用经典道德两难境地法,如果被试在道德判断框架和道德行动框架下对道德提议进行支持度评分;试验2决定规范和结果的结合,即使规范提倡或禁止且结果利超弊或弊大于利,连使用方差分析法探讨规范和结果对道德决策的互相影响;试验3使用CNI模型(Consequence, Norm and general Inaction/action preference)分离出结果敏感性,专业敏感性和普通不作为/作为支持。3单实验综合表明道德行动框架比道德判断框架增强了结果敏感性,削弱了规范敏感性,增强了一般不作为倾向。德行动框架比道德判断框架会导致更强的功利主义倾向,再弱的无偿论倾向和再强的普通不作为倾向,证明了Gawronski相当(2017)的试验结果,支持认知失调的行动模型,证明道德决策会受到动机加工的影响。

submitted time 2019-09-16 Hits13609, Downloads1545, Comment 0

7. chinaXiv:201909.00137 [pdf]

德自我在认知加工中的优势

胡传鹏
Subjects: Psychology >> Social Psychology

德自我指个体对自己在道德方面的评估。作为自己概念的中心部分,德自我对众人的道德判断和道德行为都发生重要影响。近来的研究表明,德自我相比自我的其他方面有优势,例如自我提高功能(self-enhancement effect)在道德方面比其他方面更强,即使人们广泛认为自己在多地方处于平均水平之上,如果在道德方面这种优越感最强。但是,德自我的优势是否也存在于认知加工中仍是未知的题材。依照研究结合认知神经科学的方法,因为社会统一学习为研究范式,系统地试了道德自我在知觉中的加工优势,提出道德自我是指个体行为的内在参照标准,依照论文从行为学(第二~四回)和神经大发游戏网站学(先后五回)水平呢及时同理论提供实证证据。 首先,通过三只控制研究(第二回:研究1-3),证明了道德品质信息在知觉加工中的优势,并且免了熟悉性和文字启动等可能的模糊变量,啊道德信息能够对知觉起到自上而下的影响提供证据。如果道德自我是个人行为和认知加工的内在参照标准,虽然研究1-3的结果为遭受这同标准的调控。所以,我们预期,当把自己与别人作为外显变量时,德信息对知觉的调控作用主要体现在道德自我这同标准上。为验证这同要(先后三回),研究4比了道德意义上积极、中性和消极的自己以及他人在知觉匹配中加工的差别,察觉道德品质信息对知觉的调节作用主要起在和自己相关的标准。啊越来越将道德信息和自己相关的互相作用,分别以道德(研究5)或者自我(研究6)作为与任务无关的激发,检查道德和自己对知觉的内隐调节作用,结果发现道德和自己能够对知觉产生调节作用。为讨论道德自我在知觉加工优势效应的安定,我们利用元分析更加表明(研究7),德自我信息相对于其他条件人加工优势在影响时上的效用量大约为Cohen’s d = 0.5左右,表现有中等的效用量。 为深入了解道德自我的感觉机制,依照研究下模型分析的思路分解认知过程(先后四回),使用扩散模型和指数高斯模型对研究4 ~ 6的数据分析,研究8察觉道德自我对知觉决策的影响重大是通过加快道德自我条件下的消息累积速率,如果不是改变被试的决定偏见。啊考察道德自我的感觉加工中的跨任务稳定性,在研究9结合了感性匹配任务和感分类任务,还在知觉分类任务中设置了多标准,结果发现,德自我在不同的职责中都表现有稳定的优势。 舆论的第二部分,尤其研究了道德自我的神经机制。一方面,使用大样本的神经成像数据,探索了自己道德评估得分与大脑结构的涉及(先后五回)。通过基于体素的形态学分析(研究10),我们不能发现,德自我评分与大脑灰质体积之间的相关。为对与道德自我任务的脑区进行评估,我们利用神经成像元分析(研究11)比了道德认知与自己参照的神经成像研究,察觉两者同激活了坐内侧前额叶和眶额皮层,啊越来越功能成像研究提供了好的基础。 依照课题使用社会认知神经科学的方法,从效果、算法和硬件三只层次研究了道德自我概念,以社会大发游戏最新官网与认知大发游戏最新官网和计算模型结合起来。依照研究的系列实验表明,德自我在知觉中有稳定性的优势,这种优势表现为积极的道德自我信息在知觉中会更快地进行信息的积累,那个神经基础或是坐内侧前额叶和眶额叶皮层。德自我在认知加工中的优势,和社会大发游戏最新官网中自我提高的效用一起,共同影响了道德自我概念对于个体的重要,啊今后更改变道德行为提供了基础。

submitted time 2019-09-12 Hits5047, Downloads512, Comment 0

8. chinaXiv:201607.00046 [pdf]

Exact Solution for Three-Dimensional Ising Model

Zhang, Degang
Subjects: Physics >> General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.

Three-dimensional Ising model in zero external field is exactly solved by operator algebras, similar to the Onsager's approach in two dimensions. The partition function of the simple cubic crystal imposed by the periodic boundary condition along both $(0 1 0)$ and $(0 0 1)$ directions and the screw boundary condition along the $(1 0 0)$ direction is calculated rigorously. In the thermodynamic limit an integral replaces a sum in the formula of the partition function. A order-disorder transition in the infinite crystal occurs at a temperature $T=T_c$ determined by the condition: $\sinh\frac{2J}{k_BT_c}\sinh\frac{2(J_1+J_2)}{k_BT_c}=1$, where $(J_1 J_2 J)$ are the interaction energies in three directions, respectively. The analytical expressions for the internal energy and the specific heat are also given. It is also shown that the thermodynamic properties of 3D Ising model with $J_1=J_2$ are connected to those in 2D Ising model with the interaction energies $(J_1 J_{2D})$ by the relation $(\frac{J_{2D}}{k_BT})^*=(\frac{J}{k_BT})^*-\frac{J_1}{k_BT}$, where $x^*=\frac{1}{2}{\rm ln coth} x={\rm tanh}^{-1}(e^{-2x})$.

submitted time 2019-09-12 Hits4899, Downloads1325, Comment 0

9. chinaXiv:201904.00091 [pdf]

Dynamics of infiltration rate and Field-Saturated soil hydraulic conductivity in a Wastewater-Irrigated cropland

Siyi Zhang; Isaac Hopkins; Li Guo; Henry Lin
Subjects: Geosciences >> Geography

The maintenance of a soil’s infiltration rate (IR) and field-saturated hydraulic conductivity (Kfs) is crucial for the long-term sustainable functioning of wastewater-irrigated lands. However, an effective procedure for reliably measuring in situ soil Kfs remains elusive. To address this issue, this study investigated the DualHead Infiltrometer (DHI), a novel instrument for automatically determining IR and Kfs, and compared it with a traditional Double-Ring Infiltrometer (DRI) under various field conditions. In the initial phase, we optimized the procedure and settings for the DHIs in a cropland that has been spray-irrigated with secondary-treated wastewater for decades in central Pennsylvania. Results showed that our optimized procedure, which used a single, long pressure cycle, yielded more robust measurements of IR than the originally recommended sequence of two short pressure cycles. The values of Kfs measured by the DHIs with optimized settings were similar to those measured by DRIs under many (but not all) field conditions, due to their differences in infiltration surface areas, operational procedures, length of infiltration time, and soil spatiotemporal variability. Viscosity-corrected Kfs on the irrigated cropland was 123.8±94.0 mm h-1, higher than that on the adjacent non-irrigated cropland (103.2±94.6 mm h-1), but the difference was not statistically significant, owing to the high degree of soil spatiotemporal variability and our limited number of measurements. Nevertheless, the higher Kfs values measured on irrigated cropland reflect observed changes in soil structure (e.g., soil pore characteristics) that have resulted from decades of irrigation. Seasonal variations in Kfs values existed between winter and summer conditions, but IRs during all seasons remained much higher than the current spray-irrigation rate (4.25 mm h-1), suggesting that the soil is still capable of handling the routine irrigation, even during winter. However, the coefficients of variation exceeded 67.0% across the field sites investigated and the time periods covered by our measurements were limited. As this specific site is permitted to discharge treated wastewater year-round, caution must still be exercised to ensure that soil Kfs remains high enough to prevent runoff generation, especially during winter frozen conditions.

submitted time 2019-09-06 Hits15657, Downloads1226, Comment 0

10. chinaXiv:201904.00092 [pdf]

辩论文本对患方信任和道德判断的影响和体制

吕小康; 付春野; 汪新建
Subjects: Psychology >> Social Psychology

使用反驳文本范式对患方进行文化修正,提升患方对医方的信任和道德判断。先实验编制反驳文本并说明其行,试验1证明反驳文本可以明确增强患方的对医疗信任和道德判断,连发现医疗结果是影响患方信任和对医疗道德判断的重要因素。试验2和实验3探索了驳斥文本有效性的意图机制和适用普遍性,察觉不确定性容忍度和宽容度在争鸣文本和患方信任和道德判断之间呈链式中介作用,还反驳文本可退医学情境提升普遍患方信任。

submitted time 2019-09-05 Hits15212, Downloads1471, Comment 0

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