chapter 7  keeping your network fit trim and healthy

... http://www.snert.com/Software/mod_throttle/ • The mod_bandwidth home page: http://www.cohprog.com/mod_bandwidth.html • The mod_backhand home page: http://www.backhand.org/mod_backhand/ 312 | Chapter 7: Identifying Your Performance ... service, your knowledge of your audience is very limited Depending on your target audience, it can be possible to learn about usage patterns and obtain some numerical estimates of the possible demands ... questions and look at some possible answers Q: How long does it take to process each request? What is the request distribution? A: Obviously you will have more than one script and handler, and each...

Ngày tải lên: 21/01/2014, 06:20

... are defined as τ qo ′ τ qo ′′ τq ′ τq ′′ ′ and τ ′′ and τ τd and ′ ′′ and τ d are are are are the q- and d-axis the q- and d-axis the q- and d-axis the q- and d-axis transient open-circuit time constants ... Standard Dictionary of Electrical and Electronic Terms, 2nd ed., John Wiley and Sons, New York, 1978 [6] B Adkins and R.G Harley, The General Theory of Alternating Current Machines, Chapman and ... EQUATIONS IN OPERATIONAL IMPEDANCES AND TIME CONSTANTS development, we implied a notational correspondence between the kq1 and the fd windings and between the kq2 and the kd windings In this chapter,...

Ngày tải lên: 16/02/2014, 18:47

... of the Internetwork Operating System (IOS) Use Cisco CLI commands to perform basic router and switch configuration and verification Given a network addressing scheme, select, apply, and verify ... www.bkacad.com Role of Internetwork Operating System (IOS) • • • • Basic routing and switching functions Reliable and secure access to networked resources Network scalability Using Cisco Command Line Interface ... www.bkacad.com Role of Internetwork Operating System (IOS) • Identify the basic command structure for IOS commands H c vi n m ng Bách khoa - Website: www.bkacad.com IOS command Conventions H c vi...

Ngày tải lên: 22/12/2013, 13:17

... algorithmic techniques to create “random numbers”  although are not truly random  can pass many tests of “randomness” known as “pseudorandom numbers” created by “Pseudorandom Number Generators (PRNGs)” ... for cipher use, good for key generation Natural Random Noise    best source is natural randomness in real world find a regular but random event and monitor generally need special h/w to this ... compensate for this when sample and use best to only use a few noisiest bits from each sample Published Sources   a few published collections of random numbers Rand Co, in 1955, published million...

Ngày tải lên: 06/03/2014, 16:20

... equations of motion Fig A standard differential winch consists of two drums, D1 and D , and a cable or chain which is anchored on both ends and wound clockwise around one drum and counterclockwise around ... ROLLER CHAINS AND THEIR ADAPTATIONS Various roller, side-plate and pin configurations for power transmissions, conveying, and elevating STANDARD ROLLER CHAIN—FOR POWER TRANSMISSION AND CONVEYING ... generating (A) modified cycloidal curves, and (B) basic cycloidal curves true cycloidal This is done by a second steel-band arrangement As carriage I moves, bands and cause the eccentric to rotate Because...

Ngày tải lên: 22/10/2012, 14:26

... hold the baffles in place and prevent vibration and excessive tube movement Nozzles and Accessory Parts Shell -and- tube inlet and outlet nozzles are sized for pressure drop and velocity considerations ... shell and tube, reboiler, plate and frame, air cooled, and spiral The shell -and- tube heat exchanger is the most common in the process industry Shell -and- tube heat exchangers are designed to handle ... between them and how each applies to heat exchangers Which is (are) the most critical and why? Draw and label a hairpin heat exchanger Draw and label a shell -and- tube heat exchanger Draw and label...

Ngày tải lên: 20/08/2013, 10:39

... the DTFT of periodic and finite-length sequences Example 7.1: If the signals fx…n†g are real valued and N is an even number, we can show that X …0† and X …N=2† are real values and can be computed ... advantages, and disadvantages Each FFT has different strengths and makes different tradeoffs between code complexity, memory usage, and computation requirements The FFT algorithm introduced by Cooley and ... x(0), x(4), x(2), and x(6) because x(0), x(2), x(4), and x(6) are considered to be the 0th, 1st, 2nd, and 3rd inputs in a 4-point DFT Similarly, the order of x(1), x(5), x(3), and x(7) is used...

Ngày tải lên: 28/10/2013, 05:15

... force F is applied to an object of mass m it can accelerate it and increase its speed v and kinetic energy K Similarly F can decelerate m and decrease its kinetic energy We account for these changes ... curve and the x-axis, between xi and x f (shaded blue in fig.d) xf W= ∫ F ( x)dx xi (7-8) The Spring Force: Fig.a shows a spring in its relaxed state In fig.b we pull one end of the spring and ... a force F on our hand in the opposite direction In fig.c we push one end of the spring and compress it by an amount d Again the spring resists by exerting a force F on our hand in the opposite...

Ngày tải lên: 13/12/2013, 05:15

Ngày tải lên: 14/12/2013, 12:15

... actually be underpriced and really be worth $1 million The bottom line is that you need to know and understand the difference for yourself and not rely solely on what the broker and seller are telling ... services Grounds and landscaping Total repairs and maintenance Salaries and payroll Office Maintenance Payroll taxes Total salaries and payroll Utilities Electric Gas Water and sewer Trash Telephone ... to sell your house To help you determine what price you should list your house for, your broker will pull up all of the current listings in your neighborhood, as well as recent sales, and calculate...

Ngày tải lên: 14/12/2013, 19:15

... under homogeneous and aqueous/organic biphasic conditions [38] In homogeneous solutions propynoic acid was trimerized by all six catalysts to trimellitic and trimesic acids and respectively], ... with hexane, and the aqueous sulfolane phase with the rest of the products, the catalyst and the ammonium bicarbonate is Dimerization, oligomerization and polymerization of alkenes and alkynes ... oligomerization and polymerization of alkenes and alkynes 7.4 247 Alkyne reactions Oligomerization and polymerization of terminal alkynes may provide materials with interesting conductivity and (nonlinear)...

Ngày tải lên: 23/12/2013, 07:19

... been to me and, excepting a sore throat and headache, there is not much the matter with me.—Yours, etc.’ ‘Well, my dear,’ said Mr Bennet, when Elizabeth had read the note aloud, ‘if your daughter ... weather, and by herself, was almost incredible to Mrs Hurst and Miss Bingley; and Elizabeth was convinced that they held her in contempt for it She was received, however, very politely by them; and ... well and, indeed, so I still at my heart; and if a smart young colonel, with five or six thousand a year, should want one of my girls I shall not say to him; and I thought Colonel Forster looked very...

Ngày tải lên: 21/01/2014, 18:20

... system publishers, and online merchants Chapter 7: The Web and E-mail 47 Example: Phishing Chapter 7: The Web and E-mail Basics 1: Computers and Digital 48 Phishing Chapter 7: The Web and E-mail 49 ... what you send – Be polite – Be cautious with sarcasm and humor Chapter 7: The Web and E-mail 35 Netiquette – Use smileys and text messaging shorthand cautiously – Use the Bcc function for group mailings ... Chapter 7: The Web and E-mail 38 E-mail Technology Web-based e-mail accounts allow you to use a browser to access your e-mail messages Chapter 7: The Web and E-mail 39 Web and E-mail Security...

Ngày tải lên: 06/03/2014, 09:21

... RIPv2 Verifying RIPv2 Updates VLSM and CIDR RIPv2 and VLSM RIPv2 and CIDR Verifying and Troubleshooting RIPv2 Verification and Troubleshooting Commands Common RIPv2 Issues Authentication RIPv1 Limitations ... 172.30.0.0 /16 R1 and R3 contain VLSM networks Both R1 and R3 are configured with /24 subnets of the 172.30.0.0/16 network R3: 172.30.200.0/24 subnetted again, using the first bits for subnets and the ... Discontiguous Networks Because the subnet mask is not included in the update, RIPv1 and other classful routing protocols must summarize networks at major network boundaries 19 RIPv1: Discontiguous Networks...

Ngày tải lên: 09/03/2014, 13:20

... are found – Candidate Generation: • Merge pairs of frequent subsequences found in the (k-1)th pass to generate candidate sequences that contain k items – Candidate Pruning: • Prune candidate k-sequences ... for these candidate sequences – Candidate Elimination: • Eliminate candidate k-sequences whose actual support is less than minsup © Tan,Steinbach, Kumar Introduction to Data Mining 35 Candidate ... 36 Candidate Generation Examples Merging the sequences w1= and w2 = will produce the candidate sequence < {1} {2 3} {4 5}> because the last two events in w2 (4 and...

Ngày tải lên: 15/03/2014, 09:20

... either empty, or it consists of a node called root together with two binary trees called the left and the right subtree of the root Basic operations: • Construct a tree, leaving it empty • Insert ... ) 15 Specifications for Binary Tree • Binary Tree Traversal: Each node is processed once and only once in a predetermined sequence • Depth-First Traverse: preOrderTraverse (refOperation(ref ... BinaryTree A B C D E F G Physical Conceptual i (suitable for complete tree, nearly complete tree, and bushy tree) 2i+1 2i+2 23 Contiguous Implementation of Binary Tree Record Data Parent...

Ngày tải lên: 15/03/2014, 17:20

... called then ♦ Can call via object’s name; standard member function call ♦ Convenient method of setting member variables ♦ Method quite different from standard member function call Copyright © 2006 ... Introduction ♦ Recall: arrays are fixed size ♦ Vectors: "arrays that grow and shrink" ♦ During program execution ♦ Formed from Standard Template Library (STL) ♦ Using template class Copyright © 2006 ... 7-28 Inline Functions ♦ For non-member functions: ♦ Use keyword inline in function declaration and function heading ♦ For class member functions: ♦ Place implementation (code) for function IN...

Ngày tải lên: 19/03/2014, 01:20

... “intruder” may intercept, delete, add messages ❒ 7: Network Security What is network security? Secrecy: only sender, intended receiver should “understand” msg contents sender encrypts msg ❍ receiver ... simple cipher?: •brute force (how hard?) •other? 7: Network Security Symmetric key crypto: DES DES: Data Encryption Standard ❒ US encryption standard [NIST 1993] ❒ 56-bit symmetric key, 64 bit ... receiver) ❒ 7: Network Security 10 Public key cryptography Figure 7.7 goes here 7: Network Security 11 Public key encryption algorithms Two inter-related requirements: B B need d ( ) and e ( ) such...

Ngày tải lên: 22/03/2014, 14:20

... hosts to the network and can connect multiple individual networks to form an internetwork Examples of intermediary network devices are: – Network Access Devices (Hubs, switches, and wireless ... Connectivity to and between networks Examples (4): Network Access Devices (Hubs, switches, and wireless access points) Internetworking Devices (routers) Communication Servers and Modems Security ... describe network functionality Describe the role of each layer in two recognized network models: The TCP/IP model and the OSI model Describe the importance of addressing and naming schemes in network...

Ngày tải lên: 01/04/2014, 12:20

... 1/ Pain and Other Symptoms Your pain and symptoms are important parts of your disability claim SSA staff frequently hand out forms that allow you to describe your pain and symptoms in your own ... step-by-step review of your current work activity, the severity of your impairment, your remaining physical and mental abilities, your past work and your age, education and work experience For ... you worked and when you stopped working because of your disability Because your SSDI benefits depend on your earnings, the SSA recognizes that it is usually to your advantage to have your earning...

Ngày tải lên: 18/04/2014, 14:06