大学生手机依赖与孤独感的关系研究

目的:探讨大学生手机依赖与孤独感的关系.方法:采用自编的大学生手机依赖问卷和UCLA孤独感量表对304名大学生进行调查研究.结果:(1)性别变量在手机依赖的人际健康和时间管理维度的平均得分存在显著差异(F=3.881,P<0.05;F=7.546,P<0.01),年级变量在手机依赖总分及行为(心理)耐受性维度上差异显著(F=2.941,P<0.05;F=3.082,P<0.05);(2)UCLA得分与手机依赖各因子得分均呈正相关(r=0.263,0.206,0.311,0.242,0.195;均P<0.05);(3)逐步多元回归分析显示,手机依赖的人际健康维度对孤独感有预测作用(F=7.791,P<0.001).结论:大学生手机依赖在性别和年级变量上差异显著,孤独感可能会增加大学生的手机依赖倾向.     

孤独感对大学生手机成瘾倾向的影响:经验性回避的调节作用

为了探究孤独感、手机成瘾倾向及经验性回避之间的关系,本研究选取532名大学生为被试,采用大学生手机成瘾倾向量表、中文版接纳行动问卷和孤独感量表对被试进行测量。采用偏差校正的Bootstrap法和潜变量结构方程模型分析数据。结果显示,大学生手机成瘾倾向、孤独感及经验性回避具有显著的相关性,孤独感和经验性回避可以显著地预测大学生手机成瘾倾向程度,经验性回避的调节模型的拟合指数良好(x~2/df=2.899;GFI=0.982;NFI=0.977;IFI=0.985;CFI=0.985;RMSEA=0.061),调节效应大小是0.26,95%的置信区间是0.11～0.30。经验性回避在大学生孤独感和手机成瘾倾向之间起到调节作用。     

羞怯、自尊、社会支持与留守经历大学生孤独感

采用问卷对488名有留守经历和581名非留守经历的大学生进行调查,考察羞怯与孤独感的关系以及自尊和社会支持在羞怯与孤独感之间的中介作用。结果表明:留守经历大学生羞怯体验显著高于非留守经历大学生;社会支持显著低于非留守经历大学生;孤独感显著高于非留守经历大学生;自尊没有显著差异。相关分析表明,留守/非留守经历大学生羞怯、自尊、社会支持与孤独感之间均相关显著(r=-0.21~0.52,P0.01)。结构方程模型分析结果表明:羞怯正向预测留守经历大学生孤独感,通过社会支持间接预测其孤独感,但是自尊的中介作用不显著;羞怯不但正向预测非留守经历大学生孤独感,还通过自尊和社会支持间接预测其孤独感,多重中介模型成立。     

大学生羞怯与手机移动互联网过度使用行为的关系:人际交往困扰的中介作用

为探讨大学生羞怯、人际交往困扰与手机移动互联网过度使用行为之间的关系,采用《羞怯量表》、《人际关系综合诊断量表》和《大学生手机移动互联网过度使用行为量表》对1488名在校大学生进行测量.结果表明:1)羞怯、人际交往困扰总分及各因子与手机移动互联网过度使用行为间存在显著正相关,羞怯与人际交往困扰总分及各因子间存在显著正相关;2)羞怯、人际交往困扰以及交谈交流困扰、交际交友困扰和异性交往困扰均对大学生的手机移动互联网过度使用行为有正向预测作用;3)人际交往困扰在羞怯与手机移动互联网过度使用行为之间起到完全中介效应.因此,羞怯对手机移动互联网过度使用行为的影响是通过人际交往困扰的完全中介作用实现的.     

留守儿童自尊与性虐待早期预防:孤独感的中介作用

从安徽省3市以年级分层抽样的方式选取502名留守儿童,发放罗森伯格自尊量表、预防儿童性虐待知识问卷和儿童孤独感量表进行调查。使用SPSS 22.0统计软件对数据进行相关和中介效应检验。结果:留守儿童自尊与孤独感之间均存在显著的负相关(r值分别为-0.35,P值<0.001);留守儿童孤独感与性虐待早期预防之间存在显著的负相关(r值为-0.37,P值<0.001);留守儿童自尊与性虐待早期预防之间存在显著的负相关(r值为-0.29,P值<0.01),控制孤独感检验发现自尊对性虐待早期预防的直接效应不显著(LLCI=-0.039 8,ULCI=0.134 3);孤独感的中介效应显著(LLCI=-0.188 3,ULCI=-0.110 2)。结论:留守儿童孤独感在自尊与性虐待早期预防关系中起完全中介作用。     

大学生社交焦虑与手机成瘾:一个有调节的中介

目的:探讨大学生社交回避及苦恼、自尊和智能手机成瘾的关系.方法:采用社交回避及苦恼量表(SAD)、Rosenberg自尊量表(RSES)、简易应对方式量表(WCQ)、智能手机成瘾量表(SAS-C),以兰州市西北民族大学学生作为被试群体进行测量.结果:智能手机成瘾量表总分与社交回避及苦恼量表得分呈显著正相关,与自尊量表得分呈显著负相关,与应对方式量表得分也呈显著负相关.自尊在社交回避及苦恼和智能手机成瘾之间具有中介作用,并受到应对方式的调节作用,即自尊对大学生智能手机成瘾的影响具有调节的中介效应.结论:社交回避及苦恼与智能手机成瘾具有调节的中介.     

逆境信念与农村贫困大学生孤独感:自尊的中介作用

为探讨自尊、逆境信念对降低农村贫困大学生孤独感的作用。采用UCLA孤独量表第三版、自尊评定量表和中国人逆境信念量表对抽取的427名农村贫困大学生和634名非贫困大学生进行调查。结果显示:农村贫困大学生自尊得分、逆境信念得分与孤独感得分呈负相关(r值分别为-0.46、-0.25,P值均小于0.01);自尊得分、逆境信念得分均负向预测农村贫困经历大学生孤独感得分(β值分别为为-0.42、-0.13,P值均小于0.01),两个因素累积解释22.20%的总变异;中介效应值为ab=-0.078,[95%置信区间为(-0.121~-0.004)],置信区间不包括0,中介效应的效果量R2med=0.073,表明自尊在农村贫困大学生逆境信念与孤独感的关系中起中介作用。     

大学生手机依赖与孤独感的关系：基本心理需要的中介作用

文章用手机成瘾指数量表、基本心理需要满足量表和情绪——社交孤独问卷（ESLI）测查云南省5所高校492名大学生,目的在于了解大学生手机依赖与孤独感、基本心理需要内在关系机制。结果显示,手机依赖组和非手机依赖组在基本心理需要、孤独感及各维度上的得分存在显著性,手机依赖组孤独感总分高于非手机依赖组,手机依赖组在关系需要、胜任需要、自主需要得分及基本心理需要总分都低于非手机依赖组,手机依赖与孤独感、基本心理需要存在显著相关,孤独感可以正向预测手机依赖,基本心理需要可以负向预测手机依赖;基本心理需要是孤独感对手机依赖的中介变量,中介效应值为0.114。因此,可以通过满足大学生心理需要和减少其孤独感来预防和干预大学生的手机依赖。     

大学生反刍思维和述情障碍的关系：孤独感和社交焦虑的多重中介作用

采用反刍思维量表(RRS)、孤独感量表(UCLA)、社交焦虑量表(IAS)和多伦多述情障碍量表(TAS)对504名大学生进行施测。结果发现:大学生反刍思维与孤独感、社交焦虑和述情障碍均呈正相关;述情障碍与孤独感、社交焦虑之间呈正相关,孤独感和社交焦虑之间呈正相关,反刍思维和述情障碍的直接路径效应显著,孤独感在反刍思维和述情障碍之间中介效应显著;社交焦虑在反刍思维和述情障碍之间中介效应显著,其Bootstrap 95%的可信区间分别为(0.34, 0.89)、(0.14, 0.46)、(0.04, 0.22);多重中介模型存在性别间的跨组等值性(Δeffect=0.17,Z=1.05,P0.05)。结论:大学生反刍思维既可以直接预测述情障碍,也可以通过孤独感和社交焦虑的多重中介作用影响述情障碍,且多重中介模型在性别间具有测量等值性。     

女性对女性客体化与进食障碍、抑郁的关系:外观焦虑的中介作用

采用方便取样抽取285名中国女大学生同时施测女性对女性客体化量表(WOWS)中文版、外观焦虑量表简版(AAS-BV)、进食障碍量表(EDI)和抑郁量表(SDS)。结果表明:女性对女性客体化与外观焦虑、进食障碍和抑郁均呈显著正相关(r=0.522,r=0.472,r=0.350;P0.001),外观焦虑与进食障碍、抑郁均呈显著正相关(r=0.348,r=0.484;P0.001);外观焦虑在女性对女性客体化与进食障碍、抑郁关系间均起部分中介作用,间接效应分别占总效应的56.4%和51.3%。结论:女性对女性客体化既可以直接作用于进食障碍、抑郁,又可以通过外观焦虑间接影响进食障碍和抑郁。     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

Perspherical Approaches for Electrons in Atoms and Charged Excitons in Quantum Wells

Instead of following Fock’s expansion,we solve the Schrodinger equation for some quantum mechanical manybody systems such as electrons in atoms and charged excitons in quantum wells in a similar way in hyperspherical coordinates by expanding the wave functions into orthonormal complete basis sets of the hyperspherical hannonics(HHs)of hyperangles and generalized Laguerre polynomials(GLPs)of the hyperradius.This leads the equation to     

Advances in broadband wireless communications under high-mobility scenarios

Future mobile communication systems aim at providing very high data transmission rates, even in high-mobility scenarios such as high-speed wheel-track trains, maglev trains, highway vehicles, airplanes, guided missiles or spacecraft. A particularly important commercial application is the strong and increasing worldwide demand for high- speed broadband wireless communications （up to 574.8 km/ h test speeds or 380 km/h commercial speeds） in railways, providing data, voice and video services for applications such as onboard entertainment services to passengers, train control, train dispatch, train sensor status handling and sur- veillance. In such high-mobility scenarios, there are a number of communication challenges, including fast hand- over, location updating, high-speed channel modeling, estimation and equalization, anti-Doppler spreading tech- niques, fast power control, and dedicated network architec- ture. Because signal transmission in very high-speed scenarios will inevitably experience serious deterioration, it is imperative to develop key broadband mobile communi- cation techniques for such high-speed vehicles.     

Wuhan University Journal of Natural Sciences TOTAL CONTENTS

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海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

Scale-based spatial data model for GIS

Being the primary media of geographical information and the elementary objects manipulated, almost all of maps adopt the layer-based model to represent geographic information in the existent GIS. However, it is difficult to extend the map represented in layer-based model. Furthermore, in Web-Based GIS, It is slow to transmit the spatial data for map viewing. In this paper, for solving the questions above, we have proposed a new method for representing the spatial data. That is scale-based model. In this model we represent maps in three levels: scale-view, block, and spatial object, and organize the maps in a set of map layers, named Scale-View, which associates some given scales.Lastly, a prototype Web-Based GIS using the proposed spatial data representation is described briefly.     

Exciton Seebeck in Molecular Systems

Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with     

Achieving Unusual States of Matter Under High Pressure

The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to