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Simkin P 《The Journal of perinatal education》2005,14(2):5-7
As a noted author of childbirth education articles, books, and videotapes, Penny Simkin muses over the changes in maternity care during her career and the lessons she has learned. She searches for reasons to keep on working to bring normal birth to women, especially in an era when medical intervention based on editorials rather than evidence continue to increase. 相似文献
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From supply-push mode to demand-pull mode, SCM systems will face four main points: (1) real time visibility that covers the whole supply chain, (2) agility for choice of supply and source, (3) response to diverse customer demands and short delivery deadlines, and (4) rapid occurrence of new products following the market trends and new designs. Component-based SCM has become a hot spot in research areas. A multi-layer framework is set up, including a database server layer, an application server layer, a kernel component layer and a user interface layer. Some function components are designed, which are optimal planning arithmetic components, controller components and evaluation indexes components, in order to suit both discrete and continuous manufacturing. This paper studies a three-dimensional SCM configuration method based on the types of enterprise, manufacturing and products, provides powerful tools for SCM system implementations, and adopts an object-oriented technology to construct component-based distributed information system to assure right time, right materials, right place, right quantity and right customers. 相似文献
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WANG Xue XIE Zhi-jiang 《重庆大学学报(英文版)》2006,5(2):89-93
1 Introduction a Defects existing on the surface of precise-optical products include digs, scratches, cracks, open bubbles and damaged edges [1], which form because of manufacturing process or the material itself. Surface defects impair products’ quality… 相似文献
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MypartnerandIstoppedourpolicecarbehindacarwhenwesawitstopneartheroad．Wegotoffandwentuptoaskifthewomandriverinitneededhelp．Shesaidshejustwantedtohaveashortrest，butherdogjumpedintoourpolicecar．Welaughedandsaid，“YoumaybeOK，butyourdogmightthinkhedidsomethingwrong．”Theladyalsolaughed，“Maybehethinksyouhavecometoaskhimtogotowork．Heisaretiredpolicedog．Back on Duty$河北乐亭汤家河高中@谷红岭… 相似文献
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A ——Why do you sing in the bathtub(浴缸)? ——The door won't lock, so I have to. B ——I've been singing ever since I was two years old. ——No wonder you're hoarse(嘶哑的). C ——Why do you always stand outside on the porch when your wife sings? ——Because I don't want the neighbors to think I'm beating her. 相似文献
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我对音乐一向不感兴趣,只是偶尔会听一点儿,大概是因为我一直希望在音乐中找到一种感觉,虽然我至今都无法说清楚这是一种怎样的感觉,但它就在我的心中。可在这些音乐中,我并没有找到。 相似文献
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Toeveryonethecampuslifemayseemfreshandfantastic.Yesit’strueNowI’dliketoshareitwithyouatmyschool.ItwasTuesday.Withthebellringinganewdaybegan.Iquicklyopenedmyeyesremember-ingitwasmyturntobeondutytoday.Ihur-riedlyputonmyclothesandshoesandrusheddownstairstowardstheplayground.Thereweremanystudentsontheplayground.Wehadtorunalongthetracksthreerounds.Thatwasourteacher’sorderNoonecoulddisobeyit.Wewererunningandrunningasthetreespassedback.Itseemedwewereintheseaofthetreesbreathingthefreshairwhichm… 相似文献
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用句中一个词的反义词填空，然后将句子译成汉语：１．Failureisthemotherof．２．Wewouldratherdieonourfeetthanonourknees．３．Thelongestwayroundisthewayhome．４．Toliveremainsanartwhicheveryonemustlearn，andwhichnoonecan．５．Theevilisstrong，theistentimesstro 相似文献
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昭翻瞬即盯妞胜… 苏步青先生说,学形容词三级其太勺刑佑而田少具士右杯朴的_时请牢记五个三.孟几一月J.月、几11、一八,︶4尸Tips on Remembering@韦怀仁!广西 相似文献
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I was really happy as I set my foot in Xiangshan Park.Birds were twittering and the sunwas shining bright on the trees.I t was difficult to find such a fine day in winter.As a student who was afflicted by a large amount ofhomework,I was tired of living in the city. 相似文献
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Watermarking on 3D mesh based on spherical wavelet transform 总被引：3，自引：0，他引：3
INTRODUCTIONTherapidgrowthofdigitalmediaoverInternetprovideseverybodywiththefacilityofeasyaccess,copy,editanddistributionofdigitalcontentssuchaselectronicdocuments,images,soundsandvideos.Thereisurgentdemandfortechniquestoprotectthecopyrightoftheoriginaldigitaldataandtopreventunauthorizedduplicationortampering.Digitalwatermarkingordatahidingisonesolutionforthecopyrightprotectionofdigitaldata.Digitalwatermarkingisaprocessbywhichauser-specifiedsignal(watermark)ishiddenorembeddedintoanothersi… 相似文献
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四者都有“穿”的含义,但用法有区别。1.wear强调状态,可用于一般现在时表示经常的状态或用于进行时表示目前的状态。例如: The man often wears a black coat.那人经常穿着一件黑色外套。Now Ann is wearing a new skirt.此刻安穿着一件新裙子。He always wears a pair of thick glass- 相似文献
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The influence of external low frequency (0-100 Hz) vibration on the tip-sample interaction in SPM is the main concern of this paper. A concept, vibration rejection ratio (VRR) proposed by Thompson et al, was investigated theoretically and experimentally. A concise theoretical background was introduced, a vibration stimulating and measuring system for SPM was built up, and an experimental research of the influence on SPM VRR was carried out with different SPM probes, samples, tip pre-loads and open/close loops of tip-sample interaction. It was proved both in theory and experiment that SPM VRR had correlations with the spring constant, the air damping constant, the effective mass of the cantilever, the contact spring constant and the contact damping constant between tip and sample. SPM's vibration rejecting ability can be improved by longer cantilever probe, softer sample surface, greater tip pre-load, and close-loop control for tip-sample interaction. More attention should be paid to a proper combination of the above parameters. 相似文献
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选择填空:1. In fact, it was unnecessary that she_here so early.A. come B. comes C. came D. had come2. It is ordered that the troop_off before dawn.A. start B. starts C. started D. would start3. He asks that he_more time to review his lessons.A. must give B. be given C. should give D. has to be given 相似文献
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Xiuhui Ge Renpu Jiao Hao Tian Jiazhen Wang 《美中教育评论》2006,3(5):77-81
With the development of information technology, people have paid more and more attention on the information security today. Information hiding research has become the focus of the information security research. Because every Web sites and network communication depend on the multimedia, such as audio, video, image and so on. Information hiding technology can embed secret information into a digital media source without impairing the perceptual quality of that source. Other people can＇t feel this secret information. So the secret key, the signature or the private data can transform securely in the Internet. In this paper, we mainly introduce the improving action of steganography and provide the application of the steganography in information technology. 相似文献
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秦国清 《中学英语之友(高三版)》2007,(2)
on在英语中使用频率很高,其用法也极其复杂多变。它既可用作介词又可用作副词,现将其用法归纳如下。1.表示时间,指具体的、特定的某天或某天的上午、下午和晚上。如: 相似文献
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