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146篇 您的检索式:作者名="N.K."
    题名 作者 年代 出处 被引量
1The motion analysis of fire video images based on moment features and flicker frequency显示文摘In this paper, motion analysis methods based on the moment features and flicker frequency features for early fire flame from ordinary CCD video camera were proposed, and in order to describe the changing of flame and disturbance of non-flame phenomena further more, the average changing pixel number of the first-order moments of consecutive flames has been defined in the moment analysis as well. The first-order moments of all kinds of flames used in our experiments present irregularly flickering, and their average changing pixel numbers of first-order moments are greater than fire-like disturbances. For the analysis of flicker frequency of flame, which is extracted and calculated in spatial domain, and therefore it is computational simple and fast. The method of extracting flicker frequency from video images is not affected by the catalogues of combustion material and distance. In experiments, we adopted two kinds of flames, i. e. , fixed flame and movable flame. Many comparing and disturbing experiments were done and verified that the methods can be used as criteria for early fire detection.LIJin FONG N.K.,CHOW W.K.,WONG L.T.,LUPuyi XUDian-guo 2004Journal of Marine Science and Application2004,3,1:9
2边坡稳定性的最大似然估计显示文摘为圆弧形(干和湿边坡)和楔形(干边坡)边被破坏直接估计安全系数,提出了简单、新颖的经验公式。估计边坡安全系数的这些新公式是采用统计学最大似然估计方法获得的。收集了23个干边坡(破坏13,稳定10)和23个温边坡(破坏16,稳定7)圆弧形破坏实例,以及14个干边坡(破坏8,稳定6)楔形破坏实例数据。可以看出,采用新公式预测的安全系数与采用极限平衡方法计算的安全系数颇为一致。N.K.萨赫 P.R.肖利 L.N.乌帕德亚雅 祝玉学 1995国外金属矿山1995,20,3:9
3教学中的职业精神 充满矛盾的职业:世纪之交的教学显示文摘安迪·哈格里夫斯 莱斯利·N.K.罗 2001教育展望2001,30,2:5
4Effects of rainwater harvesting on herbage diversity and productivity in degraded Aravalli hills in western India显示文摘Over-exploitation and rural growth have severely damaged native vegetations of Aravalli hills in Rajasthan, India. This study was conducted to evaluate the effects of different restoration practices (i.e., rainwater harvesting (RWH) and planting of tree seedlings) on improve- ment in soil water and nutrients and growth and biomass of herbaceous vegetation. Contour trench (CT), Gradonie (G), Box trench (BT), V-ditch (VD) and a control were imposed on 75 plots (each of 700 m 2 ) in natural slope gradient defined as <10%, 10% 20% and >20% slopes in 2005. Each plot had three micro-sites of 1-m 2 at up (USP), middle (MSP) and lower (LSP) part of the plot for observation in 2008. The existed gradient (due to soil texture and topographic features) of soil pH, EC, SOC, NH 4 - N, NO 3 -N and PO 4 -P in June 2005 between >20% to <10% slopes were decreased in 2008 after applying RWH techniques. Such improvement in soil status promoted vegetation growth and biomass in higher slope gra- dients. Soil water, species diversity and herbage biomass increased from USP to LSP, and RWH techniques had positive role in improving SOC, nutrients, vegetation population, evenness and growth at MSP. Despite of lowest SWC, regular rain and greater soil water usage enhanced green and dry herbage biomasses in 10% 20% and >20% slopes, compared with <10% slope. The highest diversity in CT treatment was related to herbage biomass, which was enhanced further by highest concentrations of SOC and PO 4 -P. Further, CT treatment was found to be the best treat- ment in minimizing biomass variance in different slopes. Conclusively, soil texture and topographic features controlled soil water and nutrients availability. Rainwater harvesting techniques increased soil water storage and nutrient retention and also enhanced vegetation status and biomass by minimizing the effects of hillslopes. Thus depending upon the site conditions, suitable RWH technique could be adopted to increase herb- age biomass while rehabilitating the degraded hills.G. Singh G.R. Choadhary B. Ram N.K. Limba 2011Journal of Forestry Research2011,22,3:3
5教学中的职业精神 香港与中国大陆的教育改革及师资培养显示文摘莱斯利·N.K.罗 2001教育展望2001,30,2:3
6Effect of cooling rate on the microstructure and mechanical properties of Nb-microalloyed steels显示文摘S. Shanmugam N.K. Ramisetti R.D.K. Misra T. Mannering D. Panda S. Jansto 2007Materials Science & Engineering A2007,,:2
7A new substitution–diffusion based image cipher using chaotic standard and logistic maps显示文摘Vinod Patidar N.K. Pareek K.K. Sud 2008Communications in Nonlinear Science and Numerical Simulation2008,,7:2
8Moral Education of Youths in the Information Age显示文摘Leslie N.K. Lo Fang Wang 2006美中教育评论2006,3,3:2
9Evaluation of some essential oils as botanical fungitoxicants in management of post-harvest rotting of citrus fruits显示文摘Pramila Tripathi N.K. Dubey R. Banerji J.P.N. Chansouria 2004World Journal of Microbiology and Biotechnology2004,,3:2
10热应激对猪生产和代谢的影响显示文摘文章综述了热应激对猪的生产和代谢的影响,以及热应激对猪肠道健康的影响。并从饲养管理和营养措施两方面阐述了应对热应激的措施。其中营养措施包括:锌、乳制品、谷氨酰胺、抗氧化剂、地塞米松、甜菜碱的使用。M.V. Sanz-Fernandez S.K. Stoakes J.S. Johnson M. Abuajamieh J.T. Seibert S.C. Pearce N.K. Gabler R.P. Rhoads L.H. Baumgard 2014饲料工业2014,35,10:2
11Effect of cooling rate on the microstructure and mechanical properties of Nb-microalloyed steels显示文摘S. Shanmugam N.K. Ramisetti R.D.K. Misra T. Mannering D. Panda S. Jansto 2007Materials Science & Engineering A2007,,:2
12OARSI guidelines for the non-surgical management of knee osteoarthritis显示文摘T.E. McAlindon R.R. Bannuru M.C. Sullivan N.K. Arden F. Berenbaum S.M. Bierma-Zeinstra G.A. Hawker Y. Henrotin D.J. Hunter H. Kawaguchi K. Kwoh S. Lohmander F. Rannou E.M. Roos M. Underwood 2014Osteoarthritis and Cartilage2014,,:2
13Subtrochanteric osteoid osteoma: A misdiagnosed case complicated by a hip fracture显示文摘有 subtrochanteric 的一个 34 岁的人对左腿节的侧面的外皮局部性的骨样的骨瘤被报导。侧面的大腿和膝的温和自发的疼痛地介绍的病人。他拒绝了 X 光线照相术的考试并且被当作更大的 trochanteric 疼痛症候群 9 个月。他然后从承受高度在下降以后与左腿节的颈的 transcervical 破裂被招收。破裂与 3 个 cannulated 螺丝钉被修理并且太平无事地愈合了。他的症状在第一手术后的年以后变得更坏。十八个月手术后地疼痛是迟钝的,在夜里变得更坏,并且仅仅与反煽动性的药减轻了,并且他有一软弱。新拍和断层照片侧面的 subtrochanteric 是指示的有 subperiosteal 本地化的骨样的骨瘤。损害包括巢与一根反应骨头的外科的切除成功地被对待。N.K. Sferopoulos 2016Chinese Journal of Traumatology2016,19,5:2
14Local air quality management as a risk management process: Assessing, managing and remediating the risk of exceeding an air quality objective in Great Britain显示文摘J.W.S. Longhurst C.I. Beattie T.J. Chatterton E.T. Hayes N.S. Leksmono N.K. Woodfield 2006Environment International2006,,8:1
15Safety assessment of Zanthoxylum alatum Roxb. essential oil, its antifungal, antiaflatoxin, antioxidant activity and efficacy as antimicrobial in preservation of Piper nigrum L. fruits显示文摘Bhanu Prakash Priyanka Singh Prashant Kumar Mishra N.K. Dubey 2011International Journal of Food Microbiology2011,,1:1
16The angiosuppressive effects of 20(R)- ginsenoside Rg 3显示文摘Patrick Y.K. Yue Daisy Y.L. Wong P.K. Wu P.Y. Leung N.K. Mak H.W. Yeung L. Liu Zongwei Cai Zhi-Hong Jiang T.P.D. Fan Ricky N.S. Wong 2006Biochemical Pharmacology2006,,4:1
17Medication adherence and associated barriers in hypertension management in India显示文摘Thomas Dennis N.K. Meera K. Binny M. Sonal Sekhar Githa Kishore Salini Sasidharan 2010CVD Prevention and Control2010,,:1
18Image encryption using chaotic logistic map显示文摘N.K. Pareek Vinod Patidar K.K. Sud 2006Image and Vision Computing2006,,9:1
19气候跃变的分析显示文摘R.Yamamoto T.Iwashima N.K. Sanga M.Hoshiai 符长锋 1987气象科技1987,,06:1
20Undergraduate students’ perceptions of digital library: A case study显示文摘N.K. Sheeja 2010The International Information & Library Review2010,,3:1
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