describe three responsibilities of the data link layer of the osi model
Tài liệu Module 7- Data Link Layer CCNA Exploration 4.0 pptx
... Data Link Layer Protocols- The Frame31• Remember that although there are many different Data Link layer protocols that describe Data Link layer frames, each frame type has three basic ... www.bkacad.comOverviewUpon completion of this chapter, you will be able to:• Explain the role of Data Link layer protocols in data transmission. • Describe how the Data Link layer prepares data for transmission ... consists of virtual connections between the nodes of a network independent of their physical layout. – These logical signal paths are defined by Data Link layer protocols.• The Data Link layer...
- 64
- 507
- 0
Tài liệu Using the Data Link Properties Dialog Box ppt
... Using the Data Link Properties Dialog Box Problem You want to display the Data Link Properties dialog box from an application so that users can create their own database connections just as they ... and displays a Data Link Properties dialog box using the Microsoft OLE DB Service Component through COM interop. The C# code is shown in Example 1-10. Example 1-10. File: DataLinkDialogForm.cs ... reference to the Microsoft OLE DB Service Component 1.0 Type Library from the COM tab in Visual Studio .NET's Add Reference Dialog. The sample code contains a single event handler: Data Link...
- 2
- 377
- 0
Module 9: The Transactional Data Access Layer
... outcome of the transaction. Operation of CRM The first step in the operation of the CRM is the client component’s creation of the CRM Worker. The client component then begins using the CRM Worker. ... satisfy the requirements of the Create Requisition use case. In the class, include the necessary methods to obtain the next database ID. The class should also cache database IDs from the database ... that focus on the DAL: Module 8, The Nontransactional Data Access Layer and Module 9, The Transactional Data Access Layer. ” The DAL is an application’s means of access to data services....
- 34
- 428
- 0
Tài liệu Module 8: The Nontransactional Data Access Layer doc
... the database. Also, the cursor does not track changes to the underlying data. This is useful if you need an unchanging snapshot of the data. 30 Module 8: The Nontransactional Data Access Layer ... is the first of two modules that focus on the DAL: Module 8, The Nontransactional Data Access Layer and Module 9, The Transactional Data Access Layer. ” The DAL is an application’s means of ... Harness The implementation of an XML physical design begins with a definition of the schema for the data exchange. The schema should identify the rules for each data element and composite element...
- 62
- 362
- 0
Tài liệu Designing for Profitability in the Physical Layer of Wireless Networks docx
... precisely these relatively inexpensive components of the network that can have long-term, positive impact on the reliability and profitability of the network.Bend Radius Protection The must-have of ... connectivity for the physical layer, the Network Planning organization not only meets the requirements of its internal customer – Operations – but also contributes to the profitability of the company ... physical layer of the wireless network is getting larger and more complex. With more wireless data services come smaller coverage areas, increasing the number of cell sites as well as the number of...
- 8
- 609
- 0
Tài liệu Module 9: The Transactional Data Access Layer pptx
... outcome of the transaction. Operation of CRM The first step in the operation of the CRM is the client component’s creation of the CRM Worker. The client component then begins using the CRM Worker. ... satisfy the requirements of the Create Requisition use case. In the class, include the necessary methods to obtain the next database ID. The class should also cache database IDs from the database ... logic layer. The transactional DAL then processes the requests by delegating the requests to the data services layer. The transactional DAL can return to the business logic layer either success...
- 34
- 324
- 0
Tài liệu Health of Children Living in Urban Slums in Asia and the Near East: Review of Existing Literature and Data pdf
... responsible for the focus on the health of children under five years of age, and he was the leader in the definition of the health status and determinants indicators that framed the literature ... about the significance of urbanization with respect to the health of the poorest children living in the poorest settlements in cities. The underlying purpose of this study is to support the design ... design of effective program interventions to improve the health of these children. The report tries to deal with the questions of what is different about the living situations and life chances of...
- 104
- 1,510
- 0
Tài liệu Fertility, Family Planning, and Women’s Health: New Data From the 1995 National Survey of Family Growth pptx
... thepopulation.Thenumberofwomensherepresentsinthepopulationiscalledher‘‘samplingweight.’’Samplingweightsmayvaryconsiderablyfromthisaveragevaluedependingontherespondent’srace,theresponserateforsimilarwomen,andotherfactors.Aswithanysamplesurvey,theestimatesinthisreportaresubjecttosamplingvariability.SignificancetestsonNSFGdatashouldbedonetakingthesamplingdesignintoaccount.Nonsamplingerrorswereminimizedbystringentquality-controlproceduresthatincludedthoroughinterviewertraining,checkingtheconsistencyofanswersduringandaftertheinterview,imputingmissingdata,andadjustingthesamplingweightsfornonresponseandundercoveragetomatchnationaltotals.Estimatesofsamplingerrorsandotherstatisticalaspectsofthesurveyaredescribedinmoredetailinanotherseparatereport(13).Thisreportshowsfindingsbycharacteristicsofthewomaninterviewed,includingherage,maritalstatus,education,parity,householdincomedividedbythepovertylevel,andraceandHispanicorigin.IthasbeenshownthatblackandHispanicwomenhavemarkedlylowerlevelsofincome,education,andaccesstohealthcareandhealthinsurance,thanwhitewomen(14).Theseandotherfactors,ratherthanraceororiginperse,probablyaccountfordifferencesinthebehaviorsandoutcomesstudiedinthisreportamongwhite,black,andHispanicwomen(15).TableBshowsafactorthatshouldbeconsideredininterpretingtrendsinpregnancy-relatedbehaviorintheUnitedStates:thechangingagecompositionofthereproductive-agepopulation.In1982,therewere54.1millionwomenofreproductiveageintheUnitedStates;in1988,57.9million;andin1995,60.2million(16).Thelargebabyboomcohort,bornbetween1946and1964,was18–34yearsofagein1982,24–42yearsofagein1988,and31–49yearsofagein1995.Theselargebirthcohortswerepreceded(upto1945)andfollowed(1965–80)bysmallercohorts.Whiletheoverallnumberofwomen15–44yearsofageroseby6million,or11percentbetween1982and1995 ,the numberofteenagewomendroppedbyabout6percent,thenumberofwomen20–24yearsofagedroppedby15percent,andthenumberofwomen25–29droppedby6percent(tableB).Incontrast,thenumberofwomen30–44yearsofageincreasedsharply—forexample,thenumberofwomen40–44yearsofageincreasedby59percentbetween1982and1995.Also,women30–44yearsofageaccountedfor54percentofwomen15–44yearsofagein1995comparedwith44percentin1982.Thesedifferencesinagecompositionmayberelevantwhenevertimetrendsamongwomen15–44yearsofagearebeingdiscussed.Publicusefilesbasedonthe1995NSFGareavailableoncomputertape.TheywillalsobeavailableonCompactDiscRead-OnlyMemory(CD-ROM).QuestionsaboutthecostandavailabilityofthecomputertapesshouldbedirectedtotheNationalTechnicalInformationService(NTIS),5285PortRoyalRoad,Springfield,VA22161,703–487-4650,or1–800-553-NTIS.QuestionsregardingtheCD-ROMfilesshouldbedirectedtoNCHS’DataDisseminationBranchat301–436-8500.ResultsTables1–17containmeasuresofpregnancyandbirthintheUnitedStates.ChildrenEverBornandTotalBirthsExpectedIn1995,women15–44yearsofageintheUnitedStateshadhadanaverageof1.2birthsperwoman(table1).Thiscompareswith1.2in1988and1.3in1982(17).In1995,women15–44yearsofageexpectedtofinishtheirchildbearingwithanaverageof2.2childrenperwoman(table1)comparedwith2.2in1988and2.4in1982(17).Theproportionwhoreportthattheyhaveneverbeenpregnantwasmarkedlyhigherforcollegegraduatesthanforthosewhodidnotcompletehighschool(table3).Thissamepatternbyeducationisalsoseenwhendataforlivebirthsareexamined(tables4–5):about49percentofwomen22–44yearsofagewhohadgraduatedfromcollegehadhadnolivebirthsasofthedateofinterviewcomparedwithjust8percentofwomen22–44yearsofagewithoutahighschooldiploma(table4).WithinraceandHispanicorigingroups,thepatternwasthesame:collegegraduateshadmarkedlyhigherpercentschildlessthanwomenwithlesseducation(table5).Table6showsacomparisonbetweenlivebirthsreportedintheNSFGandlivebirthsregisteredonbirthcertificatesintheyears1991–94.Ineachindividualcalendaryearandforthesumoftheyears1991–94 ,the NSFGestimateofthenumberofbirthsisveryclosetothebirthcertificatetotalanddiffersfromitbylessthantheNSFG’ssamplingerror.TheNSFGestimateisalsoverycloseforwhitewomen.TheNSFGestimateforblackwomenisslightlylower,andtheestimateforotherracessomewhathigherthanthebirthcertificatedata.Adiscussionofthisdifferenceisgiveninthedefinitionof‘‘RaceandHispanicorigin’’inthe‘‘DefinitionsofTerms.’’Overall,andbycharacteristicsotherthanrace,however,table6showsthatTableB.Numberofwomen,byage:UnitedStates,1982,1988,and1995Age¬ ... 19nonvoluntaryintercourse.Onesetofquestionswasintheinterviewer-administeredportionofthesurveyandthesecondwasintheself-administeredportion(AudioCASI).Intheinterviewer-administeredseries,theywereaskedwhethertheirfirstintercoursewas‘‘voluntaryornotvoluntary.’’Forabout8percentofwomen15–44yearsofagewhohavehadintercourse,theirfirstintercoursewasnotvoluntary(table21).Forthosewhosefirstintercourseoccurredatage15oryounger,thatfirstintercoursewasnonvoluntaryfor16percentcomparedwith7percentorlessforthosewhosefirstintercourseoccurredatage16orolder.Thepercentwhosefirstintercoursewasnonvoluntaryisnearly10percentamongwomenwhosefirstintercoursewasbefore1975comparedwithabout6percentamongwomenwhofirsthadintercourseinthe1990’s(table21).Intheself-administered(AudioCASI)portionoftheinterview,womenwereaskedarelatedbutdifferentquestion:whethertheyhadeverbeenforcedbyamantohavesexualintercourseagainsttheirwill.About20percentofwomenreportedthattheyhadbeenforcedbyamantohaveintercourseagainsttheirwillatsometimeintheirlives(table22).Thus,table21showsthatfor8percentofwomen,theirfirstintercoursewasnonvoluntary;table22showsthat20percenthadhadnonvoluntaryintercourseatsometime—notnecessarilyatfirstintercourse.Table22alsoshowsthat6percentofwomenreportedthattheywereforcedtohaveintercoursebeforetheywere15andanother6percentbeforetheywere18.Afairlyhighpercentofformerlymarried(divorcedorseparated)women—about35percent—reportedthattheyhadbeenforcedtohaveintercourse.Thisfindingdeservesfurtherstudy.FirstSexualPartnerTherehasbeenmuchpublicdiscussionaboutthepartnersofsexuallyactiveteenagers.Table23profilestheageofmalepartnersatwomen’sfirstvoluntaryintercourse.Abouttwo-thirds(66percent)ofwomenwhohadtheirfirstvoluntaryintercoursebeforetheywere16hadfirstpartnerswhowereunder18yearsofage;21percenthadfirstpartners18–19yearsofage;7percenthadfirstpartners20–22yearsofage,2percenthadfirstpartners23–24yearsofage,and4percenthadfirstpartners25yearsofageorolder(table23).Only3percentofwomenhadtheirfirstintercoursewithamantheyjustmet.About3outof5women(61percent)were‘‘goingsteady’’or‘‘goingtogether’’withthemantheyhadintercoursewiththefirsttime,andabout1in5wereengagedormarriedtohim.About12percentofallwomenweremarriedwhentheyhadtheirfirstintercourse.Amongwomen40–44yearsofage(bornin1951–55),23percentweremarriedtotheirpartneratfirstintercoursewhileabout2percentofwomen15–19yearsofage(born1971–75)weremarriedtotheirfirstpartner.Womenwholivedwithbothoftheirparentsthroughouttheirchildhoodweremorelikelythanotherwomentohavebeenmarriedtotheirpartneratfirstintercourse(table24).FirstIntercourseRelativetoFirstMarriageAmongever-marriedwomen15–44yearsofage,82percenthadfirstintercoursebeforetheyweremarried.About69percentofthosefirstmarriedin1965–74hadtheirfirstintercoursebeforemarriagecomparedwith89percentofthosefirstmarriedinthe1990’s.Only2percentofthosefirstmarriedin1965–74hadtheirfirstintercourse5yearsormorebeforemarriagecomparedwith56percentofthosefirstmarriedinthe1990’s(table25).NumberofSexualPartnersAsmentionedpreviously,somequestionsonabortion,sexualpartners,andforcedsexualintercoursewereaskedinboththeinterviewer-administeredandtheself-administered(AudioCASI)portionsoftheinterview.Responsestosensitivequestionsappeartohavebeenaffectedbythecomputerself-administeredmodeofinterviewing.Tables26–31showdataonthenumberofsexualpartnersinthelast1year,5years,andlifetime,usingboththeinterviewer-administeredandself-administeredmethods.Presentingdatabasedonbothmodesofinterviewingallowstheexaminationofdifferencesinreportingduetothemodeofinterviewing(table26versus27,table28versus29,andtable30versus31);andtheselectionoffindingsmostappropriateforcomparisontoothersurveys.About3percentofunmarriedwomentoldtheinterviewerthattheyhadhadfourormoremalesexualpartnersinthelast12months(table26),comparedwith9percentreportingfourormorepartnersinAudioCASI(table27).AsimilardisparitywasfoundwhencomparingtheinterviewerresultswithAudioCASIresultsforthenumberofpartnerssinceJanuary1991(alittlelessthan5years,onaverage).Amongunmarriedwomen,14percenttoldtheinterviewertheyhadfourormoremalesexualpartnerssinceJanuary1991(table28)while18percentreportedinAudioCASIthattheyhadhadfourormorepartnersinthattime(table29).Thistopicdeservesmoredetailedstudy,butitappearsthatusingthemoreprivateinterviewtechniquegaveahigherandpresumablymorecompleteestimateofthenumberofpartnersamongunmarriedwomen(8,11).MarriageandCohabitationTables32–37show1995dataonformalmarriageandunmarriedcohabitation.About38percentofwomen15–44yearsofagehadneverbeenmarriedwheninterviewedin1995(table32).Thepercentnevermarriedwashigherineveryagegroupin1995thanitwasin1982(24).Abouthalfofwomen25–39yearsofagehavehadanunmarriedcohabitationwithamanatsometimeintheirlives;10to11percentofwomenintheirtwentiesarecurrentlycohabitingwithaman(table33).About30percentofwomen25–39yearsofagelivedwithaman(cohabited)beforetheirfirstmarriage(table34).Overone-half(57percent )of Series23,No.19[Page5Table ... marital statusprovided by the U.S. Bureau of the Census. The 10,847 women in the NSFG represent the 60.2 million womenin the civilian noninstitutionalpopulation of the United States in 1995.Thus,...
- 125
- 760
- 0
Tài liệu Fertility, Family Planning, and Reproductive Health of U.S. Women: Data From the 2002 National Survey of Family Growth doc
... (tables 97,98) The NSFG is one of the few reliable sources of nationally representative data on the use of infertility services. Earlier reports have documented the rise in use of these services ... health of men and women (11–13). Strengths and Limitations of the Data The data in this report come primarily from the most recent cycle of the NSFG conducted in 2002, and, as a result, they ... Table 24 describes couple agreement or disagreement about the intendedness (at time of conception) of recent births, with the father’s attitudes based on the mother’s reports of his attitude....
- 174
- 933
- 0
Tài liệu Báo cáo " Evaluation of ASTER Data Use in Land Use Study in the Mekong delta " pptx
... different types of land cover. These combinations will be used for the classification for the land cover types for which the combination is the most discriminative. Due to the constraints of the spatial ... resolution even of 15m are still limited for the detailed land use mapping of the studied area. Instead of this, ASTER data provide a wide range of spectra and we assume that there exist some ... Methodology As the studied area is characterized by a large diversity of land use practice with a land cover of small size, the discrimination capacity of the data is essential. ASTER data with...
- 11
- 491
- 0
Tài liệu ELECTRICAL /DATA CABLING WORKS IN THE BRANCH OF BANK OF INDIA, BHULLAR , LUDHIANA. doc
... with the consent of the contractor, shall form part of the agreement. 27. The contractor shall visit the site of the work & shall satisfy himself as to the conditions under which the ... 28. The contractor shall get the approval of the Architect regarding the route of conduits, No. of runs, diameter of conduits, No. & size of wires, location of pull boxes, route of cables ... the date of opening of the tenders. 4. The time completion of work shall be essence of the contract, and shall be completed within 60 days only from the date of award of work 5. Offers...
- 16
- 623
- 0
Tài liệu Báo cáo khoa học: "Untangling the Cross-Lingual Link Structure of Wikipedia" pptx
... because the dis-tances in this extended graph are based on the so-lution of the LP. The properties of this algorithmare given by the following two theorems (proofs inAppendix A).Theorem 2. The ... (2) The first summand accounts for the edges en-tirely within the region, and the second one ac-counts for the edges in C(v, r) to the extent thatthey are within the radius. The definition of ... actually describe two related concepts in a single page. Our algo-rithm will then either make a somewhat arbitraryassignment to the component of either the first orsecond concept, or the broader...
- 10
- 542
- 1
Tài liệu Báo cáo khoa học: The isolation and characterization of cytochrome c nitrite reductase subunits (NrfA and NrfH) from Desulfovibrio desulfuricans ATCC 27774 Re-evaluation of the spectroscopic data and redox properties ppt
... containing the double of NrfAsubunit in respect to the NrfH subunit. Nevertheless, insidethese huge aggregates there are species of the type a2b2. The present findings are in agreement with the ... regard, the best combination of the two subunits that match the smallest molecular mass isa2b2. Overnight incubation of the protein in this detergentled to a decrease of the area of the first ... correlations The determination of the 3D structure of D. desulfuri-cans ATCC 27774 NrfA [17] enabled to ascertain the spatial characterization of the five hemes, namely theirproximity and the axial...
- 12
- 593
- 0
Tài liệu Báo cáo Y học: Soluble silk-like organic matrix in the nacreous layer of the bivalve Pinctada maxima A new insight in the biomineralization field pptx
... around the sides of the small mineral particles. In the five-layered model of nacreorganic matrix organization [7,60] the surface layers, alsocalled the ÔenvelopeÕ by the authors, are the aspartic ... Someimportant roles were ascribed to them as the control of nucleation, the growth and the inhibition of crystal forma-tion [8,73]. The other compounds of the nacre organicmatrix, present in ... proteins. However, the surface molecules extracted inWSM correspond to the core of the organic matrix layer of the previous model, the silk-fibroin-like molecules. Thus, wemay think of a different...
- 10
- 731
- 0
Tìm thêm: hệ việt nam nhật bản và sức hấp dẫn của tiếng nhật tại việt nam xác định các mục tiêu của chương trình xác định các nguyên tắc biên soạn khảo sát chương trình đào tạo của các đơn vị đào tạo tại nhật bản xác định thời lượng học về mặt lí thuyết và thực tế tiến hành xây dựng chương trình đào tạo dành cho đối tượng không chuyên ngữ tại việt nam điều tra đối với đối tượng giảng viên và đối tượng quản lí điều tra với đối tượng sinh viên học tiếng nhật không chuyên ngữ1 khảo sát các chương trình đào tạo theo những bộ giáo trình tiêu biểu xác định mức độ đáp ứng về văn hoá và chuyên môn trong ct phát huy những thành tựu công nghệ mới nhất được áp dụng vào công tác dạy và học ngoại ngữ mở máy động cơ lồng sóc đặc tuyến tốc độ rôto n fi p2 đặc tuyến dòng điện stato i1 fi p2 sự cần thiết phải đầu tư xây dựng nhà máy thông tin liên lạc và các dịch vụ phần 3 giới thiệu nguyên liệu từ bảng 3 1 ta thấy ngoài hai thành phần chủ yếu và chiếm tỷ lệ cao nhất là tinh bột và cacbonhydrat trong hạt gạo tẻ còn chứa đường cellulose hemicellulose chỉ tiêu chất lượng theo chất lượng phẩm chất sản phẩm khô từ gạo của bộ y tế năm 2008 chỉ tiêu chất lượng 9 tr 25