检索结果-南通市图书馆

高低吸引力男女面孔注意偏向受女性生理周期的影响

在线全文

学校读者我要写书评

暂无评论

高低吸引力男女面孔注意偏向受女性生理周期的影响

大学生自我疏离感对网络成瘾的影响及社会支持中介作用

第十七届全国心理学学术会议

作者：宋美静 cody.ding 杨东戴红丹张静秋西南大学心理学部美国密苏里大学圣路易斯校区教育与心理学院

越来越多证据显示随着女性生理周期变化的荷尔蒙水平影响着女性的心境、认知、社会知觉和行为。其中一部分研究发现,生理周期影响着女性的面孔偏好。比如,后卵泡期女性比黄体期女性偏好更男性化的男性面孔,而黄体期女性比卵泡期女性更... 详细信息

越来越多证据显示随着女性生理周期变化的荷尔蒙水平影响着女性的心境、认知、社会知觉和行为。其中一部分研究发现,生理周期影响着女性的面孔偏好。比如,后卵泡期女性比黄体期女性偏好更男性化的男性面孔,而黄体期女性比卵泡期女性更讨厌看起来不健康的男性面孔。这与不同生理周期阶段女性的荷尔蒙水平和生存意义有着重要关系。后卵泡期的女性雌激素水平高,黄体酮水平低,具有很高生育能力,其生存意义是获得好基因;黄体期女性雌激素和黄体酮水平均高,处于怀孕或类怀孕状态,其生存意义是保护下一代。但以往研究很少涉及月经期对女性面孔偏好的影响,也较少涉及女性生理周期不同阶段对面孔注意加工的影响。因此,本研究采用经典点探测范式来探索生理周期不同阶段(月经期、后卵泡期、黄体期)女性对高低吸引力男女面孔(高低吸引力男女面孔在唤醒度、效价、吸引力和男女性化上均匹配)的注意偏向及其成分。实验共有60名女性自愿者参与(被试年龄为:20.7±1.29;被试生理周期为:29.47±2.3),月经期(1-5天)、后卵泡期(8-13天)和黄体期(18-24天)各20人。结果显示:被试对女性面孔注意偏向和注意脱离困难显著大于男性面孔,符合女性自我性别偏见假设;黄体期对高低吸引力男性面孔的注意偏向显著小于卵泡期和月经期,对高低吸引力女性面孔的注意偏向均显著大于男性面孔,且黄体期存在对高低吸引力女性面孔的注意偏向,对高低吸引力男性面孔的注意回避和脱离易化;月经期对所有面孔的注意脱离困难显著大于黄体期,且月经期存在对高吸引力女性面孔的注意偏向,对高低吸引力女性面孔的注意脱离困难;后卵泡期没有表现出对高吸引力男性面孔的注意偏向及成分,可能是因为实验材料的高吸引力男性面孔偏女性化。

关键词：生理周期面孔吸引力注意偏向

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

临床心身疾病杂志 2016年第3期22卷 -页

作者：姚小喃张馨尹 cody.ding 杨东 400715中国·重庆西南大学心理学部 63121美国·圣路易斯美国密苏里大学圣路易斯校区教育与心理学院

目的:探讨大学生自我疏离感对网络成瘾的影响及社会支持的中介作用.方法:对1000名大学生采用自制自我疏离感问卷、中文网络成瘾量表、社会支持量表进行测评分析.结果:大学生自我疏离感与网络成瘾呈显著正相关(P＜0.01),与社会支持呈显... 详细信息

目的:探讨大学生自我疏离感对网络成瘾的影响及社会支持的中介作用.方法:对1000名大学生采用自制自我疏离感问卷、中文网络成瘾量表、社会支持量表进行测评分析.结果:大学生自我疏离感与网络成瘾呈显著正相关(P＜0.01),与社会支持呈显著负相关(P＜0.01);社会支持与网络成瘾呈显著负相关(P＜0.01);自我疏离感对网络成瘾有显著正向预测作用;社会支持在大学生自我疏离感和网络成瘾间起部分中介作用(P＜0.01),其中主观支持在中介作用中贡献相对较大.结论:大学生自我疏离感对网络成瘾有显著影响,社会支持在其中起部分中介作用.

关键词：大学生自我疏离感网络成瘾社会支持中介作用

Natural vibration and critical velocity of translating Timoshenko beam with non-homogeneous boundaries

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Applied Mathematics and Mechanics(English Edition) 2024年第9期45卷 1523-1538页

作者： Yanan LI Jieyu ding Hu ding Liqun CHEN Shanghai Institute of Applied Mathematics and Mechanics Shanghai Key Laboratory of Mechanics in Energy EngineeringShanghai Frontier Science Center of MechanoinformaticsSchool of Mechanics and Engineering ScienceShanghai UniversityShanghai 200072China School of Mathematics and Statistics Qingdao UniversityQingdao 266071Shandong ProvinceChina

In most practical engineering applications,the translating belt wraps around two fixed *** boundary conditions of the dynamic model are typically specified as simply supported or fixed *** this paper,non-homogeneous boundaries are introduced by the support *** the translating belt as the mechanical prototype,the vibration characteristics of translating Timoshenko beam models with nonhomogeneous boundaries are investigated for the first *** governing equations of Timoshenko beam are deduced by employing the generalized Hamilton's *** effects of parameters such as the radius of wheel and the length of belt on vibration characteristics including the equilibrium deformations,critical velocities,natural frequencies,and modes,are numerically calculated and *** numerical results indicate that the beam experiences deformation characterized by varying curvatures near the *** radii of the wheels play a pivotal role in determining the change in trend of the relative difference between two beam *** the results unearths that the relative difference in equilibrium deformations between the two beam models is more pronounced with smaller-sized *** the two wheels are of equal size,the critical velocities of both beam models reach their respective *** addition,the relative difference in natural frequencies between the two beam models exhibits nonlinear variation and can easily exceed 50%.Furthermore,as the axial velocities increase,the impact of non-homogeneous boundaries on modal shape of translating beam becomes more *** dealing with non-homogeneous boundaries is challenging,beam models with non-homogeneous boundaries are more sensitive to parameters,and the differences between the two types of beams undergo some interesting variations under the influence of non-homogeneous boundaries.

关键词： translating beam Timoshenko beam non-homogeneous boundary natural frequency critical velocity

Whittle’s Index Based Sensor Scheduling for Multiprocess Systems Under DoS Attacks

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Science & Complexity 2024年第1期37卷 329-350页

作者： CAI Zai ding Kemi Shenzhen Key Laboratory of Control Theory and Intelligent Systems Southern University of Science and TechnologyShenzhen 518055China.

In this paper,the authors consider how to design defensive countermeasures against DoS attacks for remote state estimation of multiprocess *** each system,a sensor will measure its state and transmits the data packets through an unreliable channel which is vulnerable to be jammed by an *** limited communication bandwidth,only a subset of sensors are allowed for data transmission,and how to select the optimal one to maximize the accuracy of remote state estimation is the focus of the proposed *** authors first formulate this problem as a Markov decision process and investigate the existence of optimal ***,the authors demonstrate the piecewise monotonicity structure of optimal *** the difficulty of obtaining an optimal policy of large-scale problems,the authors develop a suboptimal heuristic policy based on the aforementioned policy structure and Whittle’s ***,a closed form of the indices is derived in order to reduce implementation complexity of proposed scheduling policy and numerical examples are provided to illustrate the proposed developed results.

关键词： DoS attacks Kalman filter remote state estimation Whittle’s index.

A vertical track nonlinear energy sink

在线全文

学校读者我要写书评

暂无评论

Applied Mathematics and Mechanics(English Edition) 2024年第6期45卷 931-946页

作者： Meng LI Hu ding Shanghai Key Laboratory of Mechanics in Energy Engineering School of Mechanics and Engineering ScienceShanghai Frontier Science Center of MechanoinformaticsShanghai UniversityShanghai 200444China

Eliminating the effects of gravity and designing nonlinear energy sinks(NESs)that suppress vibration in the vertical direction is a challenging task with numerous damping *** this paper,the dynamic design of a vertical track nonlinear energy sink(VTNES)with zero linear stiffness in the vertical direction is proposed and realized for the first *** motion differential equations of the VTNES coupled with a linear oscillator(LO)are *** the strong nonlinearity considered of the VTNES,the steady-state response of the system is analyzed with the harmonic balance method(HBM),and the accuracy of the HBM is verified *** this basis,the VTNES prototype is manufactured,and its nonlinear stiffness is *** damping effect and dynamic characteristics of the VTNES are studied theoretically and *** results show that the VTNES has better damping effects when strong modulation responses(SMRs)***,even for small-amplitude vibration,the VTNES also has a good vibration suppression *** sum up,in order to suppress the vertical vibration,an NES is designed and developed,which can suppress the vertical vibration within certain ranges of the resonance frequency and the vibration intensity.

关键词： track nonlinear energy sink(TNES) vertical direction gravity nonlinear stiffness harmonic balance method(HBM) vibration control

Deep structure of the Southeast Asian curved subduction system and its dynamic process

在线全文

学校读者我要写书评

暂无评论

Journal of Oceanology and Limnology 2024年第3期42卷 701-704页

作者： Weiwei ding Key Laboratory of Submarine Geoscience&Second Institute of Oceanography Ministry of Natural ResourcesHangzhou 310012China School of Oceanography Shanghai Jiao Tong UniversityShanghai 200030China

The deep structure,material circulation,and dynamic processes in the Southeast Asia have long been an elusive scientific puzzle due to the lack of systematic scientific observations and recognized theoretical *** on the deep seismic tomography using long-period natural earthquake data,in this study,the deep structure and material circulation of the curved subduction system in Southeast Asia was studied,and the dynamic processes since 100 million years ago was *** is pointed out that challenges still exist in the precise reconstruction of deep mantle structures of the study area,the influence of multi-stage subduction on deep material exchange and shallow magma activity,as well as the spatiotemporal evolution and coupling mechanism of multi-plate *** work should focus on high-resolution land-sea joint 3-D seismic tomography imaging of the curved subduction system in the Southeast Asia,combined with geochemical analysis and geodynamic modelling works.

关键词： curved subduction system deep structure material recycling dynamic process Southeast Asia

Towards human-leveled vision systems

在线全文

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2024年第8期67卷 2331-2349页

作者： ding JianHao HUANG TieJun State Key Laboratory of Multimedia Information Processing School of Computer SciencePeking UniversityBeijing 100871China

The human visual system is a complex and interconnected network comprising billions of neurons. It plays an essential role in translating environmental light stimuli into information that guides and shapes human perception and action. Research on the visual system aims to uncover the underlying neural structure principles of human visual perception and their possible ***, there are two main approaches: biological system analysis and simulation, artificial intelligence models based on deep learning. Here we aim to discuss the two approaches to human-level vision systems. Deep learning has significantly impacted the field of vision with achievements in representation, modeling, and hardware design. However, there is still a significant gap between deep learning models and the human visual system in terms of scalability, transferability, and sustainability. The progress of the biological visual system can help fill the gap by further understanding the properties and functions of different components of the system. We take the efforts of reconstructing the retina as an example to illustrate that even if we are unable to replicate the visual system on a computer right now, we can still learn a lot by combining existing research outcomes in neuroscience. At the end of the paper, we suggest tracing back to gradually build visual systems from the computational counterpart of biological structures to achieve a human-level vision system in the future.

关键词： human-leveled vision system deep learning biological visual system

同方期刊数据库

From London buses to activity trackers:A reflection of 70 years of physical activity research

在线全文

学校读者我要写书评

暂无评论

Journal of Sport and Health Science 2024年第6期13卷 736-738页

作者： ding ding Ulf Ekelund Prevention Research Collaboration Sydney School of Public HealthFaculty of Medicine and HealthThe University of SydneyCamperdownNSW 2006Australia Charles Perkins Centre The University of SydneyCamperdownNSW 2006Australia Department of Sports Medicine Norwegian School of Sports SciencesOslo 0806Norway Department of Chronic Diseases Norwegian Institute of Public HealthOslo 0213Norway

In 1953,Morris et al.^(1)published their ground-breaking findings among London bus drivers and conductors,linking physical activity to a major chronic disease for the first *** seminal paper marked the birth of a new field—physical activity epidemiology.^(1)Since then,the field has flourished,evidenced by mounting scientific publications.^(2)Our knowledge about the role of physical activity in disease prevention has expanded from coronary heart disease in Morris et al.’s^(1)initial study to dozens of additional diseases and conditions,such as diabetes,cancers,and dementia.^(3)More than 7 decades and thousands of publications later,we critically reflect on several aspects of the progress in physical activity epidemiology.

关键词： epidemiology prevention linking

New advances in the study of Tethyan Geodynamic System

在线全文

学校读者我要写书评

暂无评论

Science China Earth Sciences 2024年第3期67卷 874-878页

作者： Lin ding State Key Laboratory of Tibetan Plateau Earth System Science(LATPES) Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China

Tethyan Ocean was initially proposed by Austrian geologist Eduard Suess in 1893. The study of the Tethyan evolution by European geologists has led to the development of modern geology, but not to the establishment of plate tectonics theory(Trümpy, 2001). With the progress in various studies, the concept of Tethys has evolved from a Mesozoic ocean into three long-term evolving oceans:Proto-Tethys, Paleo-Tethys, and Neo-Tethys (Figure 1), and their life cycles cover the entire Phanerozoic era (Wu et al., 2020).

关键词： geology Mesozoic ocean