自己动手,丰衣足食

忽然之间,通胀了。超市里,米贵了,面贵了,油贵了,连卷纸都在涨。菜场里,青菜贵了,海鲜贵了,各种肉也贵了。一时之间,贵气袭来,席卷了我们的生活。我们的收入没变,但是能够换来的实物越来越少了。     

涨时代的机遇与挑战

让价格再飞一会 盘点2010白酒行业的关键词,“涨”字无疑是最热门的话题：方便面涨价了,鸡蛋涨价了,面粉涨价了,燃油涨价了,蔬菜涨价了,食用油涨价了,棉花涨价了,水电费涨价了……很多人不禁感慨：“除了工资,身边的一切都涨了!”     

略谈梳棉机针布的维护制度

从清花车间的管理,梳棉自停装置的检查及针布表面清洁制度的建立等方面介绍了梳棉机针布维护方面的经验,通过维护制度的建立执行,使针布损伤率下降了5个百分点,减少了设备事故,降低了不正常物料的投入,稳定了产品质量,提高了经济效益.     

对鲐鱼罐头生产工艺的改进

利用改进后的工艺生产出来的罐头。不仅提高了产品质量增加了鲐鱼罐头品种系列,也节约了原副材料,充分利用了鲐鱼本身油脂多的特点,降低了生产成本,提高了生产效益。     

海盗大叔John Galliano遭遇Dior“解聘门”

关乎John Galliano,我也不得不八卦一下了,就算从不关注时尚圈的人也对他并不陌生吧。浪漫主义大师因为种族歧视言论遭老东家Dior解聘,让人咋舌。时尚界到底是怎么了,McQueen死了,Margiela隐退了,Slimane去搞摄影了,Gaultier也不在Hermes玩了,YSL去见马克思了,Valentino回家享清福了,现在John Galliano也出事了……     

丝攻的修磨及攻丝润滑

讨论了钳工在攻制内螺纹的工作中,尤其是机攻时,常出现的问题,提出了改进措施,着重介绍了丝攻的修磨。还介绍了攻丝操作中冷却润滑液改进,通过实践摸索,研制了新型的“机攻螺纹润滑液”,节约了成本,提高了工效,保证了产品的合格率,取得了较好的经济效益。     

Moldflow软件优化注射模浇口位置

分析了浇口位置的重要性,建立了注射模流分析数学模型,使用SolidWorks软件建立了制品的三维模型,运用Moldflow软件对注射器针筒模具进行了填充分析,对浇口位置进行了优化,得到了最佳的浇口位置应设置在针筒注射嘴处的结论,减少了修模次数,提高了设计质量.     

中国黄酒的科研现状及发展

论述了中国黄酒近年的发展与行业整体科技水平的提升。酿造企业在设备上已,一泛实现了机械化与半机械化;工艺技术上在传统工艺的基础上应用了新工艺与新技术,提高了产品的质量安全水平;产品包装上出现了精美高雅的各式包装：产品品种上以新风格口感为导向,开发改变了单一的风格特征;在功能性研究上,除发现了γ-氨基丁酸外,还对黄酒中的功能性物质进行了深入的研究。     

情人桥

桥是河两岸的连接,与两颗心灵的相通有相似处。桥承载着一种理想,那是从此岸通向彼岸的捷径。相爱的两个人也如同两岸间的距离那样,需要一座桥梁的架起。站在桥上,回头看看走过的路,路上的每一个脚印都洒满了泪水和欢笑。脚步近了,眼睛亮了,心跳加速了。桥的尽头清晰可见,心头那份执着的信念有了归宿。走在桥上,走到了中间,再走就到了桥头。桥告诉我,不是这样的,桥下的流水源源不断的流淌吗。爱情,从没有因为形式的消失而结束。下了桥,路开始延伸,相思就开始蔓延了。     

语文教学的好帮手——多媒体课件

多媒体作为一种现代化的教学手段,创造了图文并茂、动静结合、声情交融的教学环境,巧妙利用声、光、色、形模拟了事物情景,再现了生动的事物画面,从不同程度不断的形成较多的兴奋点,为教学提供了逼真的表现效果,扩大了学生感知的时间与空间,激发了学生的主动性、积极性、创造性,突破了课程中的难点,培养了学生的审美情趣,提高了教师的教学成效。     

行星齿轮传动系统的啮合冲击特性运动仿真

建立NGW型行星齿轮传动系统的弯扭耦合非线性动力学模型,采用龙格库塔直接数值积分的方法研究综合啮合误差,以及传递功率等系统参数对行星齿轮传动系统啮合冲击特性的影响规律。结果表明,行星齿轮传动系统存在一个较大的误差阀值和一个较小的误差阀值,当误差小于较小的误差阀值时,各齿轮副都不会出现啮合冲击现象;当误差大于较小的误差阀值而小于较大的误差阀值时,某些齿轮副会出现"单边冲击"现象;当误差大于较大的误差阀值时,系统某些齿轮副会出现"双边冲击"现象;相对较小的传递功率更容易导致行星齿轮传动系统"单边冲击"现象的发生。研究结果可为设计振动噪声更低、运行品质更优的减速器提供理论参考。     

三角形单元上二次Lagrange型插值与被插函数的误差估计

通过构造三角形单元上二次Lagrange型插值函数,将三角形单元上一次Lagrange型插值与被插函数的误差估计结果推广到二次Lagrange型函数,得到相应的误差公式,丰富了误差理论的内容.     

含间隙和尺寸误差空间连杆引纬机构运动精度综合分析

为分析间隙和尺寸误差对引纬机构运动精度的影响,详细介绍了非连续接触模型和等效杆长理论的使用方法,针对空间连杆引纬机构中的空间四杆机构和平面四杆机构,在考虑制造误差和磨损或装配间隙的情况下,以概率分析方法和非连续接触理论为基础建立了运动学模型。运用MatLab的计算和仿真模块进行运动仿真,得出了相关曲线。详尽分析了机构的尺寸误差和间隙对整个机构运动输出的影响,在考虑构件误差和运动副之间的间隙影响时,剑头的输出误差比单独考虑一种影响因素时明显,且误差最大值都出现在速度的极大值点附近,可见间隙和构件误差对高速机构的影响尤为严重,此研究结果可为后续对空间连杆引纬机构的运动精度分析提供参考。     

重建误差信息在立体匹配中的应用

对重建图像的误差信息在立体匹配中的应用进行了探讨:采用Tchebichef离散正交矩对图像进行重建并获得重建误差图像,使用基于窗口的匹配方法计算图像视差,并对几组立体图像对进行了实验和分析.结果表明,虽然重建误差信息没有重建后的图像信息量大,但利用其进行匹配依然可以得到较好的匹配结果.     

Sensory profile average data: combining mixed model ANOVA with measurement error methodology

The uncertainty about average sensory profile data is formulated as a measurement error problem. It is shown how F-statistics for product differences can be used in a direct manner to assess the relative size of the measurement error, to assess the maximal achievable correlation with the given measurement error and to obtain simple corrections for measurement error of pairwise correlations. Moreover, methods are given to compute approximate confidence bands for a corrected correlation between two variables measured with error. In the case of independent error the method is based on an approximation of a mixed model ANOVA by a one-way analog and on linear structural modelling. For dependent measurement error an adaptation of an approach from theoretical genetics is used. Implementations in SAS(R) are available at the author's homepage http://www.dina.kvl.dk/^∼per. It is illustrated on a data set how the approach can provide additional insight to the problem in question, for instance by providing a statistical evaluation of the possibility of a perfect relation between a chemical sucrose measurement and sensory perceived sweetness. Finally 24 sensory profile data sets with 367 attributes were investigated with respect to the measurement error as computed from a mixed model ANOVA. The result is that there is clearly additional information to gain from considering the error structure of sensory profile data.     

Multiple comparisons: comparisonwise versus experimentwise Type I error rates and their relationship to power.

Some statisticians contend that the experimentwise Type I error rate is the most important attribute of multiple comparison procedures to be used for making all possible pairwise comparisons among treatment means after an analysis of variance. That contention is challenged here. The importance of Type I errors is discussed as well as the occurrence of Type I errors in biological experiments. Also considered is the effect of Type I error protection on power. The two methods of measuring Type I error rate, comparisonwise and experimentwise, are explained, and the reader may decide which kind he wishes to control. Several references cited support Fisher's least significant difference and Duncan's new multiple range test despite their higher-than-nominal experimentwise Type I error rates. These procedures control the comparisonwise Type I error rates and are considerably more powerful in finding differences among treatments than procedures that control the experimentwise Type I error rates.     

测温元件测量误差的传热学分析

通过金属保护壳与容器连接的模型简化，对测温仪表金属保护壳进行传热学分析．分析结果为：测温仪表的测量误差与测温元件伸入流体的长度有关．实验验证结果为：伸入流体长度为200mm时热电阻的测温误差为0.42％，伸入流体长度为100mm时热电阻的测温误差为0．80％；在要求测温误差小于介质温度与容器器壁温度之差的0．5％的情况下，伸入流体长度必须大于170mm。     

变压器自动测试系统的误差分析与处理

介绍了变压器自动测试系统的主要功能和硬件结构，分析了系统误差产生的各种原因（如电压与电流互感器的角误差，电压、电流、温度传感器引起的误差，数据输入系统引起的误差，非同步采样误差等），并提出了减小误差的措施．试验证明，该系统电压、电流测试值分别与０．２级电压、电流表的测试结果一致，功率测试值与０．５级功率表的测试结果一致     

Batch accuracy of on-line fat determination

A new method for determination of the fat content of large meat batches without sampling is presented. It is based on dual-energy X-ray (DXR) scanning of meat trimmings prior to mixing, in order to determine the exact fat content of the resulting meat batch. Twenty-seven samples of three types of pork trimmings with a fat content ranging from 24 to 63% were collected and combined into batch sizes of 27-241 kg. At small batch sizes (27 kg) the nature of the measurement error is mainly random, resulting in a prediction error (root mean square error of prediction) of 0.57% against the reference method. At a batch size of 241 kg the error was reduced to 0.34%. The DXR method determines the fat content of all meat in a batch without any sampling required, thus reducing the sampling error to a minimum. This is essential, as the results show that the sampling error is large: when 27-kg samples were homogenized and measured by the reference method, the standard deviation of high-fat samples was 4.7%.     

接触角测量的量高法和量角法的比较

采用接触角来表征织物拒水性能更加精确,液滴角度测量法是接触角测量最常用的方法之一,量高法和量角法是角度测量最常用的方法。实际测试中发现,这2种方法测量的结果有比较大的误差,但误差产生的原因不详。从理论上对这2种液滴角度测量法的测量原理和测量误差进行比较分析,分别讨论了液滴高度、底端直径的量取误差和量角器转动误差产生的接触角测量误差,并用实验进行验证,这些实验结论和理论相符,最后证实量高法更准确、快捷、方便。