基于网络评价数据的产品感性意象无偏差设计方法

为解决传统感性意象设计创新中真实的用户信息极少及需案例推理的问题,提出了基于网络评价数据的产品感性意象无偏差设计方法.首先,基于网络爬虫获取互联网中用户对产品外观的文本评价数据;接着,运用文本挖掘技术分析产品感性需求及意象信息,并构建词向量实现意象的参数化表达;然后,通过参数化曲线描绘目标产品的造型特征,建立产品形态特征的参数化数据;最后,基于最大信息系数选择感性意象参数的维度,并通过随机森林构建意象与设计特征间映射关系,实现对新产品设计特征参数及其取值范围的预测,明确产品感性意象创新设计参考依据.以三厢轿车侧轮廓设计为例,所建立的意象与设计特征间映射关系中,正确率在0.5～0.7之间的比例为86.67%,设计结果满足了主要的感性意象需求,表明通过该方法能够将用户真实的评价数据转化为意象设计求解过程中重要的输入信息,从而开展基于用户感性诉求描述的无案例推理的意象创新设计活动,高效实现感性意象无偏差设计.     

基于感性工学的微型电动车前脸造型设计

研究感性工学设计理论应用于微型电动汽车前脸造型设计的方法,并结合模糊评价法设计出一款满足青年女性感性需求的微型电动汽车。从青年女性感性需求的角度出发,以微型电动汽车为实际案例进行设计研究。首先收集并筛选感性词汇和微型电动汽车造型样本图片,将筛选后的样本图片依照不同风格再进行分类提炼。然后,运用SD方案结合李克特7点量表,建立语义意象空间并挑选造型设计要素。通过感性意向度调查将意向与设计要素相结合,设计出两款方案。最后运用模糊综合评价法对2个设计方案进行评分,得到一款最符合青年女性感性需求的方案。感性工学与模糊评价法相结合有助于提升消费者对微型电动汽车造型设计的满意度,同时为微型电动汽车前脸造型设计及评价提供参考。     

基于感性工学和神经网络的产品造型设计

针对当前产品设计中对情感意象需求的提高,建构能及时反映用户情感意象评估的产品造型设计系统.分析产品的形态要素和识别产品的感性意象认知;通过语义差分法的调查结果训练BP神经网络,建立感性意象和设计参数之间非线性的对应关系;结合计算机辅助设计技术,建构实用的产品造型设计系统.通过高脚杯的实例应用表明,该方法是合理可行性的,...     

设计师和终端用户复合意象造型元素的辨识

设计师和用户在形态和意象上的认知差异将对产品造型产生重要的影响.通过对设计中感性意象的分析,基于粗糙集理论提出一种复合设计师和终端用户的意象造型元素辨识方法.在感性意象调查基础上,通过盲目删除属性约简方法,提取出个性因素与平台因素;将个性因素针对感性意象进行排序,分析设计师与终端用户之间的认知差异,辨识出复合意象的造型元素.以折弯机设计造型为例进行实例研究,结果表明该方法具有很好的适用性,将有效指导产品意象造型设计.     

基于感性工学的洁面仪外观设计研究

感性工学是一种以消费者导向为基础的新产品开发辅助技术。将感性工学和产品造型设计相联系,探讨用感性工学的研究方法对现有洁面仪产品造型的设计进行分析,尝试性归纳总结出洁面仪产品用户的情感需求和设计要素,得出"时尚高端"要求下的技术特征,并基于洁面仪现有的功能需求和机械结构提出新的设计方案。将用户对洁面仪产品的感性意象需求转化成具体造型设计语言要素,为洁面仪产品外观设计提供决策辅助,精准进行产品设计定位,以取得良好市场反馈。     

基于眼动实验的产品造型与意象空间匹配度评估指标选取

为了提取产品造型与意象空间匹配度评估指标,设计产品造型意象认知眼动实验,通过Tobii Pro T60 XL眼动仪记录被试眼动数据,分析产品造型意象认知主观评分、眼动指标数据的特征以及相互之间的相关性。结果显示：不同感性词汇与产品造型的匹配度差异显著;主观评分中意象评分、意象评分标准差、难度评分能体现感性词汇的度量性、灵敏度;意象评分与意象兴趣区中最后注视点匹配率与被试决策行为密切相关;意象兴趣区中注视时间及注视次数与被试主观评分行为相关。可以综合这些主客观指标进一步构建产品造型与意象空间匹配度评估模型。     

汽车数字仪表视觉设计要素的感性工学分析

在感性工学理论框架下,研究汽车数字仪表视觉设计要素与用户情感认知的关系。通过聚类分析法选出具有代表性的汽车数字仪表样本和感性意象词汇,运用语义差分法对样本数据的感性意象进行分析评价。利用主成分分析法降维,用少数变量表示总体变量数据信息。提炼出汽车数字仪表的视觉设计元素,构建感性意向空间。应用数量化理论一构建汽车数字仪表视觉设计要素与用户感性意象特征关系的预测模型,量化了感性诉求与汽车数字仪表的关系。在汽车数字仪表视觉设计过程中运用该模型,可有效提高汽车数字仪表视觉设计的科学性和客观性,为汽车数字仪表视觉界面设计提供理论基础。     

基于感性意象评价的家用厨师机造型设计研究

为了准确获得符合现代消费者不同审美需求的家用厨师机造型,以感性工学理论为基础,提出一种定性与定量研究相结合的厨师机造型优化设计方法;方法可以得到不同形状的形态分解要素在各类厨师机风格意象中的权重,便于形成优化设计,原型辅助厨师机造型设计;首先,选择代表性产品样本,并通过专家评估、主成分分析、形态分析等方法分别提取厨师机造型关键意象词汇和形态分解要素;其次,运用数量化理论Ⅰ构建厨师机造型分解要素与感性意象词汇的数学映射关系,经计算后得到各类分解要素的贡献度,将贡献度较高的形态要素组合后得到符合风格意象的设计原型简图,用于指导后续设计实践;经案例实践及评价,方法是有效的,可以为厨师机以及多元素组合的产品造型优化设计提供参考。     

基于灰色关联理论的产品意象设计参数辨识方法

针对当前产品设计中对感性意象需求的提高,提出一种产品意象造型设计参数辨识方法.首先获取产品的感性意象评价值和设计元素,然后通过灰关联计算,依据灰关联度辨识出产品意象造型中的平台参数和个性参数.该方法能使设计师较好地掌握关键性设计元素,从而合理配置设计资源.最后以轿车侧轮廓为例进行说明.     

显示方式对产品感性意象评价的影响实验分析

针对新产品开发中对产品外观设计的感性意象评价,探讨了立体显示方式和平面显示方式对产品感性意象评价的影响。用立体显示方式和平面显示方式展示设计的数字产品模型,参试者对其进行感性意象评分,对评分量表进行了信效度检验,然后对两种显示方式下的评分一致性进行分析。统计结果表明:两种显示方式对产品外观总体的感性意象评分一致性的影响无显著性差别,但对于产品的情感特性评价指标,评价者在立体显示方式下更容易达成一致。     

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