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135篇 您的检索式:作者名="danah"
    题名 作者 年代 出处 被引量
1Social Network Sites: Definition, History, and Scholarship显示文摘Danah M.Boyd Nicole B.Ellison 2007Journal of Computer‐Mediated Communication2007,,1:5
2用于常规粉末冶金工艺的生坯切削加工显示文摘生坯切削加工的好处已众所周知 ,如切削刀具的寿命较长 ,能够用可烧结硬化粉末制作形状复杂的零件等。零件生坯强度高可防止在运送过程中生坯开裂与损坏。但是 ,用常规粉末冶金工艺不易达到所要求的高生坯强度 (约大于 2 0MPa)。因此 ,生坯切削加工尚未得到广泛应用。用魁北克金属粉末公司 (QMP)新开发的高生坯强度 (highgreenstrength ,简称HGS)聚合物润滑剂 ,正在消除使用生坯切削加工的限制。这种润滑剂的一个杰出特性是其对温度的敏感性。在压制温度 5 5℃下整个坯件就能获得高生坯强度 ,这用冷压很容易达到。若将零件生坯压制到密度 6 8g/cm3 ,随后经固化处理 ,甚至可将生坯强度增高到 4 8MPa左右。这样高的生坯强度使得用常规粉末冶金工艺制造的零件都能进行生坯切削加工。本文介绍了用正时链轮进行生坯切削加工试验的一些结果。使用的材料是由QMPATOMET 4 6 0 1与HGS润滑剂组成的可烧结硬化的粉末混合料。先用冷压将链轮压制到密度约 6 8g/cm3 ,再对用压制的生坯与经固化处理的生坯进行切削加工 (在齿的中间车槽 )。结果表明 ,HGS润滑剂 ,特别是固化处理后 ,可赋予生坯足够高的强度 ,以进行装卡与切削加工作业。切削加工表面光滑且棱边完好。由可烧结硬化粉末制作的可生坯切削加工的链轮 。Lee Attewell Rick Armstrong Jeff Danaher Linda Tremblay 郭瑞金 韩凤麟 2004粉末冶金技术2004,22,3:5
3CRITICAL QUESTIONS FOR BIG DATA显示文摘danah boyd Kate Crawford 2012Information Communication & Society2012,,5:2
4Estimating above-ground biomass by fusion of LiDAR and multispectral data in subtropical woody plant communities in topographically complex terrain in North-eastern Australia显示文摘We investigated a strategy to improve predicting capacity of plot-scale above-ground biomass(AGB) by fusion of LiDAR and Landsat5 TM derived biophysical variables for subtropical rainforest and eucalypts dominated forest in topographically complex landscapes in North-eastern Australia. Investigation was carried out in two study areas separately and in combination. From each plot of both study areas, LiDAR derived structural parameters of vegetation and reflectance of all Landsat bands, vegetation indices were employed. The regression analysis was carried out separately for LiDAR and Landsat derived variables individually and in combination. Strong relationships were found with LiDAR alone for eucalypts dominated forest and combined sites compared to the accuracy of AGB estimates by Landsat data. Fusing LiDAR with Landsat5 TM derived variables increased overall performance for the eucalypt forest and combined sites data by describing extra variation(3% for eucalypt forest and 2% combined sites) of field estimated plot-scale above-ground biomass. In contrast, separate LiDAR and imagery data, andfusion of LiDAR and Landsat data performed poorly across structurally complex closed canopy subtropical rainforest. These findings reinforced that obtaining accurate estimates of above ground biomass using remotely sensed data is a function of the complexity of horizontal and vertical structural diversity of vegetation.Sisira Ediriweera Sumith Pathirana Tim Danaher Doland Nichols 2014Journal of Forestry Research2014,25,4:2
5Customer Heterogeneity in Service Management 显示文摘Danaher P J 1998Journal of Service Research1998,1,2:1
6Marketing-mix variables and the diffusion of successive generations of a technological innovation显示文摘Danaher J D Hardie B G 2001Journal of Marketing Research2001,38,:1
7The use of neural networks for the estimation of oceanic constituents based on the MERIS instrument显示文摘Buekton D O\'Mongain E Danahe E 1999International Journal of Remote Sensing1999,20,9:1
8Using conjoint analysis to determine the rel- ative importance of service attributes measured in customer satisfaction surveys显示文摘DANAHER P J 1997Journal of Retailing1997,73,2:1
9A Landsat 7 calibration base for australia显示文摘WU X L DANAHER T 2001SPIE2001,4548,:1
10Cumulative encounter satisfaction in the hotel conference process 显示文摘Danaher P J Mattsson J 1994International Journal of Service Industry Management1994,5,4:1
11Human error in atc system operation 显示文摘JAMES W DANAHER 1980Human factors and ergonomics society1980,22,5:1
12Definition of the Calibration Requirements for An Imaging Spectrometer System显示文摘Mongain E O Danaher S Buckton D 1993Proc SPIE1993,1938,:1
13Expression of miR-15/107 Family MicroRNAs in Human Tissues and Cultured Rat Brain Cells显示文摘Wang-Xia Wang Robert J. Danaher Craig S. Miller Joseph R. Berger Vega G. Nubia Bernard S. Wilfred Janna H. Neltner Christopher M. Norris Peter T. Nelson 2013Genomics, Proteomics & Bioinformatics2013,,:1
14Extraetion and isolation of avermectins and milbemycins from liver samples using unmodified supereritieal CO2 with in-line trapping on basic alumina 显示文摘DANAHER M O' KEEFFE M GLENNON J D 2001J Chromatogr B Biomed Sci Appl2001,761,1:1
15Erosion modeling using bayesian regulated artificial neural networks显示文摘DANAHER S DATTA S WADDLE I 2004Wear2004,256,910:1
16Rapid surface plasmon resonance immunobiosensor assay for microcystin toxins in blue - green algae food supplements显示文摘T Vinogradova M Danaher A Baxter 2011Talanta2011,84,3:1
17Social Media Changing our Information Ecology显示文摘Danah boyd 2008ITI Bloggers2008,,22:1
18Bi- ological variability in serum anti-Mullerian hormone throughout the menstrual cycle in ovulatory and sporadic anovulatory cycles in eumenorrheic women 显示文摘Kissell K A Danaher M R Schisterman E F 2014Hum Reprod2014,29,8:1
19Defining participant exposure measures in web-based health behavior change programs显示文摘Danaher BG Boles SM Akers L 2006J Med Intemet Res2006,8,3:1
20Biological varia- bility in serum anti - Mtillerian hormone throughout the menstrual cycle in ovulatory and sporadic anovulatory cycles in eumenorrheic women显示文摘Kissell KA Danaher MR Schisterman EF 2014Hum Reprod2014,29,8:1
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