chapter 4  using convention and configuration for relationships

... Standards 9.10 Figure 9.6 Telephone line bandwidth 9.11 Note Modem stands for modulator/demodulator 9.12 Figure 9.7 Modulation/demodulation 9.13 Figure 9.8 The V.32 and V.32bis constellation and ... carry frequencies between 300 and 3300 Hz, giving them a bandwidth of 3000 Hz All this range is used for transmitting voice, where a great deal of interference and distortion can be accepted ... asymmetric communication technology designed for residential users; it is not suitable for businesses 9.17 Note The existing local loops can handle bandwidths up to 1.1 MHz 9.18 Note ADSL is an...

Ngày tải lên: 16/02/2014, 20:20

... C8H18 react with 25 molecules of O2 to form 16 molecules of CO2 and 18 molecules of H2O moles of C8H18 react with 25 moles of O2 to form 16 moles of CO2 and 18 moles of H2O mol C8H18 : 25 mol ... octane, C8H18, the equation for the reaction is: C8H18(l) + 25 O2(g) → 16 CO2(g) + 18 H2O(g) • the equation for the reaction gives the mole relationship between amount of C8H18 and CO2, but we need ... Reactant • for reactions with multiple reactants, it is likely that one • • of the reactants will be completely used before the others when this reactant is used up, the reaction stops and no more...

Ngày tải lên: 28/11/2013, 01:11

Ngày tải lên: 17/12/2013, 15:18

... BScreen object holds information about one screen, and the BScreen member functions provide a means for your program to obtain information about this monitor Invoking Frame(), for instance, returns ... different types of views In keeping with the informal convention of placing the code for a class declaration in its own header file and the code for the implementation of the member functions ... shorthand notation that encapsulates both these descriptions Refer to the BWindow class section of the Interface Kit chapter of the Be Book for more details (and a list of Be-defined look and feel...

Ngày tải lên: 26/01/2014, 07:20

... Systems and File Management 19 Handheld Operating Systems Chapter 4: Operating Systems and File Management 20 SECTION File Basics C File Names and Extensions File Directories and Folders File Formats ... Operating Systems and File Management 23 File Formats A file format is the way that information is stored in a file Programs that save information to files often have their own file format A program ... related to the file format – Native file format Chapter 4: Operating Systems and File Management 22 File Directories and Folders An operating system maintains a directory for each disk, tape,...

Ngày tải lên: 06/03/2014, 09:21

... String class and its methods the Java standard class library the Random and Math classes formatting output enumerated types wrapper classes graphical components and containers labels and images ... focused on:        object creation and object references the String class and its methods the Java standard class library the Random and Math classes formatting output enumerated types wrapper ... methods that generate pseudorandom numbers • A Random object performs complicated calculations based on a seed value to produce a stream of seemingly random values • See RandomNumbers.java (page 126)...

Ngày tải lên: 15/03/2014, 11:20

... spectra FTIR spectra were analyzed and for those with strong absorption bands, the evaluation of the band parameters (peak position, band width and intensity) was performed with the original spectra, ... and the phosphate antisymmetric stretching at 1240–1200 cm)1, and the peptide bands, amide I (predominantly C¼O stretching) and amide II (predominantly N–H bending) Figures and show spectra for ... temperature and membrane fluidity of membranes formed from either: Myr2-PGro, Myr2-PCho or Myr2-PEtn MATERIALS AND METHODS The identification of candidate oblique orientated a-helix forming segments...

Ngày tải lên: 31/03/2014, 08:20

... Practical Use of Normal Forms Definitions of Keys and Attributes Participating in Keys First Normal Form Second Normal Form Third Normal Form General Normal Form Definitions (For Multiple Keys) BCNF ... dependencies and normal forms - 1NF (First Normal Form) - 2NF (Second Normal Form) - 3NF (Third Normal Form) - BCNF (Boyce-Codd Normal Form)  Additional types of dependencies, further normal forms, ... the criteria for "good" base relations? Informal Design Guidelines for Relational Databases (2)  We first discuss informal guidelines for good relational design  Then we discuss formal concepts...

Ngày tải lên: 12/05/2014, 11:55

... object • If there is only one Context Menu connect it to the form and it will display for the form and all of the controls on the form 4- 35 © 2009 Context Menu Contex menu 4- 36 © 2009 12 ... prefix) • Predefined standard dialog boxes for: – – – – File Open and Saving Printing and Previewing Color selection Font selection • Add the Common Dialog control to form – Appears in the Component ... mnuHelpAbout, mnuFormatColorRed • Checked, True/False (see coding tip p 204) • Enabled, True/False • Visible, True/False 4- 16 © 2009 Menu Design Standards • Follow the industry standards for Windows for...

Ngày tải lên: 13/05/2014, 11:31

... Chapter 4: BACKING UP AND RESTORING DATA CHAPTER OVERVIEW • Describe the various types of hardware used to perform backups • Understand the difference between full, incremental, and differential backup ... BACKING UP AND RESTORING DATA 20 SPECIFYING A BACKUP JOB TYPE Chapter 4: BACKING UP AND RESTORING DATA 21 JOB SCHEDULING • Allows backups to be performed during off-hours • Reduces potential for administrative ... Grandfather-Father-Son • Tower of Hanoi Chapter 4: BACKING UP AND RESTORING DATA 25 DEVICE CONFIGURATION Tape formatting • Prepares a new or used tape for data storage Tape erasing • Removes all data from...

Ngày tải lên: 01/08/2014, 07:20

... significant digits as a quantity between and 10 (or -1 and -10, for negative numbers), and the "placeholder" zeros are accounted for by a power-of-ten multiplier For example: amp = 6,250,000,000,000,000,000 ... "shorthand" method to represent very large and very small numbers in easily-handled form When multiplying two numbers in scientific notation, you can multiply the two significant digit figures and ... multiply, we must take the two significant sets of digits (6.25 and 3.6) and multiply them together; and we need to take the two powers-of-ten and multiply them together Taking 6.25 times 3.6, we get...

Ngày tải lên: 09/08/2014, 13:21

... Committee for Animal Research, Lund University, Sweden The investigation complied with the “Guide for the Care and Use of Laboratory Animals” as recommended by the U.S National Institutes of Health and ... immediate, and the recordings after 2½ and of therapy were similar (Figures 1, and 3) Comparable haemodynamic effects were observed at all levels of negative pressure studied (-40, -70, -120 and -160 ... Cardiac output, heart frequency, mean systemic arterial pressure and mean pulmonary artery pressure before NPWT is applied (0 min) and 2½ and after a negative pressure of -120 mmHg was applied Measurements...

Ngày tải lên: 10/08/2014, 09:23

... that not all formats can capture the same information, and therefore conversions often mean loss of information If one obtains a spatial data set in format F , but wants it in format G, for instance ... that were unthinkable before Such applications allow for real time spatial referencing and real time production of spatial information, and include electronic charts and electronic maps, precision ... receivers and auxiliary equipment) and communication links Examples for (networks consisting of) such permanent tracking stations are the AGRS in the Netherlands and the SAPOS in Germany (refer for...

Ngày tải lên: 21/10/2014, 10:09

... responsibilities of managers • Economic and legal Responsibility to make a profit and obey the law (invisible hand, hand of government, hand of management) • Ethical and discretionary Ethical behaviour ... attention to ethical standards and issues © 2003 McGraw-Hill Australia Pty Ltd PowerPoint 15 Ethical guidelines for managers • • • • • • • Obey the law Tell the truth Show respect for people Stick ... Competitiveness, high/low opportunities for success, dependency on other organisations • Internal factors Push for high performance, labour unrest, delegation, quests for innovation © 2003 McGraw-Hill...

Ngày tải lên: 22/05/2016, 14:23

... Stratigraphy and Structure The nature and distribution of aquifers and aquitards in a geological system are controlled by lithology, stratigraphy, and structure of the geological deposits and formations ... in the area: unconsolidated sands and gravels; sandstones; limestones; and basaltic lava flows Of course it is possible to quote examples of sandstone, limestone, and basalt aquitards, yet more ... aquifers, and other kinds of rocks to behave largely as aquitards For better or for worse, when a hydrogeologist travels to a new destination and begin to examine the local rock sequence for the...

Ngày tải lên: 08/06/2016, 14:00

... iterative equations for D(k) and D2(k), as given respectively by Eqs (4.16) and (4.30), and with the initial conditions for the function and its derivative The first elements for the y, D, and D2 arrays ... y(2 N ) + y(2 N + 1)   that is, the weights are equal to for the first and last elements, equal to for even elements, and equal to for odd elements Example 4.7 Using Simpson’s rule, compute ... Question: Compute analytically from Eqs (4.58) and (4.59), the steady-state values for the higher excited state population and for the photon number, and compare with the numerically obtained asymptotic...

Ngày tải lên: 13/08/2014, 02:21

Ngày tải lên: 17/10/2013, 19:15

... – Class counts in each of the partitions, A < v and A ≥ v Simple method to choose best v – For each v, scan the database to gather count matrix and compute its Gini index – Computationally Inefficient! ... Attributes: Computing Gini Index For efficient computation: for each attribute, – Sort the attribute on values – Linearly scan these values, each time updating the count matrix and computing gini index ... interesting information • Minimum (0.0) when all records belong to one class, implying most interesting information © Tan,Steinbach, Kumar Introduction to Data Mining 42 Examples for Computing...

Ngày tải lên: 15/03/2014, 09:20

... currents, and waves These generate rain that combines with land to form ecosystems, soils, and glaciers The runoff waters carry sediments down rivers to the deltas and wetlands where the sediment and ... between the mountains and the sea Freshwater wetlands are along the rivers and saltwater wetlands in the estuaries As we read in Chapter 1, wetlands filter heavy metals from air and waters, returning ... materials, such as quartz sand, circulate in the center of the hierarchy, being uplifted as sand dunes or cemented as sandstone in land formation After weathering processes, sands wash back to the...

Ngày tải lên: 18/06/2014, 19:20

... (FLPMA) of 1976 established for the first time a single and comprehensive statutory mandate for retaining public lands under federal ownership and for managing those lands for the public Under the ... (such as dams and levees), conversion of wetlands to uplands for farming and forestry, and fills for development projects such as housing, highways, and airports Section 404(f) exempts some activities ... compatible with state and local government and private programs and policies to protect farmland The terms “prime” and “unique” farmland are defined subsequently 4.4.14.1 Prime Farmland Land that has...

Ngày tải lên: 18/06/2014, 19:20