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Search Results: 1 - 10 of 29022 matches for " 王家民 "
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衍纸艺术在包装设计中的应用
王晓平,王家
包装工程 , 2013,
Abstract: 以衍纸艺术在包装中的应用现状为基础,从衍纸艺术的造型、绿色环保、装饰性和展示性等与包装设计要素的有机结合进行研究,提出衍纸艺术的装饰特色与包装造型相结合而创造出优美的、个性化的包装新形象,能有效传递商品的销售信息,促进包装造型的多样化发展需要。
水润滑塑料合金轴承摩擦性能实验
彭晋,王家
重庆大学学报 , 2001, DOI: 10.11835/j.issn.1000-582X.2001.06.003
Abstract: 水由于粘度极小,很难形成流体动力润滑,通过实验发现水润滑塑料合金轴承在运转时有较小的摩擦系数。影响摩擦系数的因素主要是转速、载荷、间隙,运用方差分析和正交实验,分析各因素对摩擦系数影响的显著性和效果,并列出各因素对摩擦系的影响曲线,对曲线进行研究后发现,塑料合金轴承运转时由于塑料合金的弹性变形而产生了弹流润滑。
活荷载效应的概率模型及统计分析
王家,林忠
工业建筑 , 1982, DOI: 10.13204/j.gyjz198203012
Abstract: 一、基本概念本文中,荷载效应一词泛指由荷载引起的各种内力及变形(弯矩、剪力、轴向力、变形、裂缝等)。定义1对目标效应,能产生与实际荷载相等效应的均布荷载,叫做等效均布荷
量子退火反演的原理和实现
魏超,朱培,王家
地球物理学报 , 2006,
Abstract: 现有的非线性反演方法,大都存在着求解的局部收敛性和计算速度慢的问题.在与模拟退火方法进行比较的基础上,本文研究了基于量子跃迁过程中量子隧道效应的量子退火反演算法.数值试验结果表明,量子退火方法应用于地球物理反问题的求解是成功的,它适合于非线性、多极值的地球物理反演问题,与模拟退火反演相比,量子退火反演在退火收敛速度和避免陷入局部极小等方面有着一定的优势,该方法也适用于其他领域非线性最优化问题的求解,具有较强的普适性.
人机界面形态元素布局设计美度意象的评价方法
Evaluation Method of Aesthetic Image for Man-machine Interface Form Elements Layout Design

张娜,王家,杨延璞
- , 2015,
Abstract: 为客观评价人机界面形态元素的布局美度,抽取了平衡度、整体度、简洁度和统一度4个美度意象指标,分别将其量化,引入AHP方法计算各意象指标的权重,提出了布局方案的综合美度计算方法。以打印复印一体机的人机界面形态元素布局设计为例,验证了该方法有助于设计师优选设计方案;以家用天燃气热水器的人机界面形态元素布局为例,验证了该方法能够更为客观、准确地反映人机界面形态元素布局的美度水平,为用户选择满意方案提供依据。
To objectively evaluate the layout aesthetic of man-machine interface form elements, the four aesthetic image indexes were extracted and quantified including balance, integrity, simplicity and uniformity. AHP method was used to calculate the weight of each image index, and the synthetic aesthetic calculation method of layout design was proposed. Man-machine interface form elements layout design of printer and copy machine was taken as an example to verify that the present method could help designer to select optimum scheme. Another example of man-machine layout design of gas water-heater was utilized to support the conclusion that the method could reflect the aesthetic level of man-machine interface form elements layout design more objectively and exactly so as to provide reference for users to select satisfactory solution
mgh2+20%(w)mgtio3复合材料的吸/放氢性能
王家,韩树,李媛,沈娜,张伟
物理化学学报 , 2014,
Abstract: 为了降低mgh2的吸放氢温度,提高其吸放氢动力学性能,本文通过球磨方法制备了mgh2+20%(w)mgtio3复合储氢材料,并研究了其储氢性能.x射线衍射(xrd)结果表明,mgtio3在与mgh2球磨过程中生成mg2tio4和tio2,并且mg2tio4和tio2在体系的吸放氢过程中保持稳定,能够对mgh2的吸放氢过程产生催化作用.程序升温脱附和吸/放氢动力学测试结果表明,添加mgtio3后mgh2的初始放氢温度从389℃降至249℃.150℃下的吸氢量从0.977%(w)提高到2.902%(w),350℃下的放氢量从2.319%(w)提高到3.653%(w).同时,mgh2放氢反应的活化能从116kj·mol-1降至95.7kj·mol-1.与mgh2相比,mgh2+20%(w)mgtio3复合材料的热力学与动力学性能均有显著提高,这主要是由于球磨和放氢过程中原位生成的tio2和mg2tio4具有良好的催化活性.
蜂窝陶瓷载体介孔tio2]涂层的制备与表征
王家,沈岳松,祝社
涂料工业 , 2008,
Abstract: ?通过溶胶凝胶工艺制备ats复相蜂窝陶瓷表面介孔tio2涂层。研究了以冰醋酸为螯合剂的钛溶胶的优化配制,利用超声波振动测定涂层的结合强度,协同xrd、sem及bet等显微表征手段对tio[sub]2[/sub]涂层进行微观分析和表征。实验表明:所制备的溶胶胶凝时间长、负载量大、比表面积大,500℃焙烧时,tio2主要为锐钛矿晶型,介孔tio2涂层与ats复相蜂窝陶瓷具有高的结合强度。
利用曲线面变形提取产品形态体特征的方法研究
An Approach to Extract the Product Shape Features by Using Variant Design of Curves and Surfaces

王毅, 王家, Richard Wilfred Yelle, 胡钢
- , 2015,
Abstract: 在变形设计理论的基础上,提出了将产品主体形态分解为子形态。研究了基于超椭圆方程和三次带参均匀B样条曲线构造技术提取影响产品艺术风格子形态横截面造型特征的方法,并结合曲面构造变形技术实现产品形态体特征的提取。以电动手工具为例研究了产品形态体特征提取与形态优化设计效果,得出超椭圆方程提取算法参数少,可较好地提取对称图形、非倒角图形的造型特征;基于三次带参均匀B样条曲线构造技术的算法参数较多,可较好地提取多种图形。
Based on the variant design theory, a new method by using super elliptic equations and cubic uniform B-spline construction technology to extract the sub-form's cross-sectional shape features was presented. Combining with the variant design of curved surfaces, the effects of extraction and shape optimization design were proved by an electric hand tool design case. The results were showed in the contrast research that the super elliptic extraction algorithm has less parameters, which is simple and can better extract the symmetric figure and chamfering graphics features. The cubic uniform B-spline algorithm has more parameters. Although it is a little complicated, it can be better used in extracting a variety of graphics and has wide adaptation
面向用户感性需求的产品形态设计方法
Product Form Design Method Oriented to Users' Perceptual demand

王家,张娜,窦忠发,杨延璞
- , 2015,
Abstract: 为满足工业设计过程中用户对产品形态的感性需求,减小用户和设计师对产品形态方案的认知差异,研究了用户需求模型,建立了产品形态设计约束空间,通过交互式遗传算法使用户和设计师共同参与寻优过程。为降低交互评价疲劳度,借助神经网络模拟用户和设计师的评价意图,以实现产品形态方案的自动求解,生成满足用户需求和设计师设计意图的方案。以家用轿车前脸形态设计为例,验证了方法的有效性。
To fulfill users' perceptual demand and reduce the cognition difference of product form between the users and the designers, user demand model was studied and design constraint space was constructed. Through Interactive Genetic Algorithms, both users and designers were allowed to participate in seeking optimal solutions. To reduce fatigue in interactive evaluation process, neural network was used to simulate users' and designers' evaluation intent for automotive solution of product form which would meet users' needs and designers' design intent simultaneously. The family car face design was taken as an example to verify the effectiveness of the proposed method
饱水砂土反复冻融时成冰条件的试验研究
王家,程国栋,张宏鼎,刘继
冰川冻土 , 1992,
Abstract: 试验结果表明,土柱端面温度周期变化,导致土柱中冻融界面上下移动,这是成冰的必要条件。由于真空渗透机制,水分被抽吸到冻融界面附近并在那里成冰。有外界水源补给是成冰的充分条件。它导致反复冻融循环时冰层厚度不断增加。冰层的位置和厚度取决于冻融界面的位置和冻融循环的次数。如果每次冻融循环后,冻融界面的位置保持不变,则形成较厚的冰层。在每次冻融循环中,如果融化深度大于冻结深度,则只能形成一层薄冰层。反之,如果融化深度小于冻结深度,则经多次冻融循环后,可以形成多层薄冰层。
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