Tài liệu Measuring the Relationship between ICT and the Environment ppt

... respect of the MEASURING THE RELATIONSHIP BETWEEN ICT AND THE ENVIRONMENT - 21 ©OECD 2009 environment and ICT. The first outputs using the new classification will be available for the 2007-08 ... 20 – MEASURING THE RELATIONSHIP BETWEEN ICT AND THE ENVIRONMENT ©OECD 2009 For the purposes of this study, the main interest would be in data that link ICT and the environment, for ... information on each MEASURING THE RELATIONSHIP BETWEEN ICT AND THE ENVIRONMENT - 23 ©OECD 2009 individual’s use of ICT and their views on the environment could be directly compared, and data tabulated...

... latterdepends on (a) the structural integrity of the vascularbed of the penis; (b) the endothelium lining the cavernosal arteries and the helicine arterioles, as wellas the endothelium lining the lacunar ... a significant relationship between ED severity and MetS parameters, except for hyperten-sion. They hypothesized that the relationship between MetS and ED severity is not clear-cut and that it ... to endothelial dysfunction and microvasculardisease and reduced androgen levels; (b) the insult on the endothe-lium resulting in endothelial injury and reduced NO synthase activity and NO production,...

... including the Quantity Theory of Money and the Neutrality of Money. The Quantity Theory of Money linked inflation and economic growth by simply equating the total amount of spending in the economy ... accumulation and decreases the growth rate. One feature accounts for the foremost difference between the endogenous growth models and the neo-classical economies. In the neo-classical economies, the ... a relationship exists between inflation and growth, it is not likely to be a simple one. The bivariate relationship may not be linear; and the correlation between inflation/disinflation and...

... quickly and others do not. That is, the variation in the dependent variables comes from both the time series and the cross-sections, and some pooling of data is necessary to address the questions. ... is linked to the date of the liberalization. Eichengreen forthcoming reviews the data and methodological differences among most of these and other studies. (For discussions of the different ... openness 9 These are: Botswana, Canada, Colombia, Costa Rica, the U.S., Iceland, India, Israel, Japan, Austria, Belgium, Denmark, Finland, Germany, Ireland, Italy, Jamaica, the Netherlands, Norway,...

... but they do have their place. There are a lot of weak passwords out there and every little bit helps. So, the longer we delay an attacker while they try dictionary attacks on our passwords, the ... can think of these as the “primary colors” of information assurance. By mixing and matching these and we do mix and match, because they are interrelated we are able to develop either a very ... vulnerable system, and then establish a beachhead or foothold by compromising that system. Then the vulnerable host that got compromised can be used to attack other systems, either in the same facility...

... respondents howthey perceived the programme and its pros and cons, which the success factors are, if and whythey have succeeded, their view on the nature ofknowledge, the way they manage the system ... later in the overallcomparison between empirical findings and theory.Local perceptions The way that local managers and workers viewed the programme, in terms of their associations and the extent ... transfer do not understand the purpose and the contents of it, if they cannot see the reasonsfor it, they are likely to be less motivated to support and contribute.Knowledge and Process Management...

... RelationshipbetweentheContinuousandDiscreteTimeSpectraBecauseDTsignalsoftenoriginatebysamplingCTsignals,itisimportanttodeveloptherelationshipbetweentheoriginalspectrumoftheCTsignalandthespectrumoftheDTsignalthatresults.First,c1999byCRCPressLLCtheCTFTisappliedtotheCTsamplingmodel,andthepropertieslistedaboveareusedtoproducethefollowingresult:F{sa(t)}=Fs(t)∞n=−∞δ(t−nT)= ... (1.17b)whereCisacounterclockwisecontourofintegrationwhichisaclosedpathcompletelycontainedwithintheregionofconvergenceofS(z).RecallthattheDTFTwasobtainedbytakingtheCTFouriertransformoftheCTsamplingmodelrepresentedbysa(t).Similarly,thebilateralz-transformresultsbytakingthebilateralLaplacetransformofsa(t).Ifthelowerlimitonthesummationof(1.17a)istakentoben=0,then(1.17a )and( 1.17b)becometheone-sidedz-transform,whichistheDTequivalentoftheone-sidedLTforCTsignals.ThehierarchicalrelationshipamongthesevariousconceptsforDTsystemsisdiscussedlaterinthischapter,whereitwillbeshownthatthefamilystructureoftheDTfamilytreeisidenticaltothatoftheCTfamily.ForeveryCTtransformintheCTworldthereisananalogousDTtransformintheDTworld,andviceversa.c1999byCRCPressLLCTABLE1.3 ... X(ejω)Y(ejω)7.x[n]y[n]12πx−xX(ejθ)Y(ej(ω−θ))dθParseval’sTheorem8.∞n=−∞|x[n]|2=12ππ−π|X(ejω)|2dω9.∞n=−∞x[n]y∗[n]=12ππinf−πX(ejω)Y∗(ejω)dωsignals.WhenworkingwithDTsystemspractitionersmustoftenmanipulatedifferenceequationsinthefrequencydomain.Forthispurposeproperty1andproperty2areveryimportant.AswiththeCTFT,property4isveryimportantforDTsystemsbecauseitallowsengineerstoworkwiththefrequencyresponseofthesystem,inordertoachievepropershapingoftheinputspectrumortoachievefrequencyselectivefilteringfornoisereductionorsignaldetection.Also,property3isusefulfortheanalysisofmodulationandfilteringoperationscommoninbothanaloganddigitalcommunicationsystems.TheDTFTisdefinedsothatthetimedomainisdiscreteandthefrequencydomainiscontinuous.ThisisincontrasttotheCTFTthatisdefinedtohavecontinuoustimeandcontinuousfrequencydomains.ThemathematicaldualoftheDTFTalsoexists,whichisatransformpairthathasacontinuoustimedomainandadiscretefrequencydomain.Infact,thedualconceptisreallythesameastheFourierseriesforperiodicCTsignalspresentedearlierinthechapter,asrepresentedby(1.5a )and( 1.5b).However,theclassicalFourierseriesarisesfromtheassumptionthattheCTsignalisinherentlyperiodic,asopposedtothetimedomainbecomingperiodicbyvirtueofsamplingthespectrumofacontinuousfrequency(aperiodictime)function[8].ThedualoftheDTFT ,the discretefrequencyFouriertransform(DFFT),hasbeenformulatedanditspropertiestabulatedasaninterestingandusefultransforminitsownright[5].AlthoughtheDFFTissimilarinconcepttotheclassicalCTFourierseries,theformalpropertiesoftheDFFT[5]servetoclarifytheeffectsoffrequencydomainsamplingandtimedomainaliasing.TheseeffectsareobscuredintheclassicaltreatmentoftheCTFourierseriesbecausetheemphasisisontheinherent“linespectrum”thatresultsfromtimedomainperiodicity.TheDFFTisusefulfortheanalysisanddesignofdigitalfiltersthatareproducedbyfrequencysamplingtechniques.1.4.2...

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... physician and other para-medicals and include laboratory and X-ray facilities. According to the structure of the primary health care system, at the secondary level, the district and governorate ... support the district health system through the national medicine programme. Increasing numbers of districts in Yemen are adopting the district health system. There are achievements in the district ... private and foreign investments; and strengthening the role of the local authorities. To achieve the targets of the MDGs, a public investment of US$ 57.6 billion is required over the period...

... model assumesthat the 50-fold excess of DNA nearly saturates the proteinprior to the addition of pre-RNA. It further assumes thateither the dissociation of bound DNA is slow or the 400-fold excess ... valid and argues that RNA splicing doesnot occur as a result of rapid dissociation of the pro-teinÆDNA complex. Furthermore, the fact that the proteinwas saturated with the same amount of either ... seemsreasonable to make the working hypothesis that the RNA and DNA binding sites are not the same, rather that theyare separate. This does not exclude the possibility that bothnucleic acid...