basics of the ip routing

... chemical engineers The first section of the book explains the basic structure of thesoftware and leads the student through a hands-on introduction to the various features of the software designed ... by selectingthe Help button on the main Aspen Plus display The philosophy of the book is based on the idea that once a chemical engineer becomes thoroughly facile in the use of thesoftware and ... 1TEACH YOURSELF THE BASICS OFTrang 2TEACH YOURSELF THE BASICS OFTrang 3Copyright © 2011 by John Wiley & Sons, Inc All rights reserved.A joint publication of the American Institute of Chemical

Ngày tải lên: 01/04/2014, 10:57

... 10Then PGP uses the digest and the private key to create the “signature.” PGPtransmits the signature and the plaintext together Upon receipt of themessage, the recipient uses PGP to recompute the ... certificate’s authenticity verifiesthe issuing CA’s digital signature, and hence, the integrity of the contents ofthe certificate (most importantly, the public key and the identity of thecertificate ... and the key is the number of characters to offset it For example, if we encode the word “SECRET” using Caesar’s key value of 3, we offset the alphabet so that the 3rd letter down (D) begins the

Ngày tải lên: 29/04/2014, 14:55

... function of the LQI of the link. The link cost is an estimate of the number of transmission attempts required for successful frame delivery in a link The path cost is the sum of the link costs of the ... considers the quality of the worst link of a path It does not explicitly take into account the other characteristics of the path, such as the hop count or the LQI of the rest of the links 4.9 PATH-DR ... used in many technologies The cost of a path is the sum of the ETX values of the links of the path Hence, the ETX metric aims to select the path with the smallest number of total link layer transmission

Ngày tải lên: 21/06/2014, 11:20

... when the company wants toknow if the expected value of the cash flows is greater than the cost of theproject, and whether or not the expected rate of return on the project exceedsthe cost of the ... Project A is the superior project.10-17 Since the IRR is the cost of capital at which the NPV of a projectequals zero, the projects inflows can be evaluated at the IRR and thepresent value of these ... with the number of years the project lasts and theMIRR, to solve for the initial present value of the cash outflows One of these cash outflows occurs in Year 0 and the remaining value must bethe

Ngày tải lên: 01/07/2014, 21:28

... Transportation Professionals The Basics of Telecommunications Final Report September, 2004 Trang 2Notice This document is disseminated under the sponsorship of the Department of Transportation in the interest ... Background 186 The System - Existing 188 The System - New 191 City of Irving Texas 193 Background 193 Proposed Update 194 5.8 GHz Attributes 196 Theory of Operation 197 The Irving Proposal ... to describe t he configuration of a cable The expression is often used in the following manner: “The cable is available in 5000 foot “put -ups ” Trang 27numb ers of fib er st rands wi ll requi

Ngày tải lên: 05/07/2014, 00:21

... severity of the spill The purpose of contingency plans is to coordinate all aspects of the response to an oil spill This includes stopping the flow of oil, containing the oil, and cleaning it up The ... serious As the seriousness of an incident is often not known in the initial phases, one of the first priorities is to determine the magnitude of the spill and its potential impact Alerting the first ... contingency plan for this phase of the operation and the importance of a high level of training in first response Stopping the flow of oil is a priority in the first phase of the operation, although

Ngày tải lên: 11/08/2014, 04:20

... from washing over the top of the boom The term freeboard is also used to refer to the height from the water line to the top of the boom The skirt is the portion of the boom below the floats or flotation ... the amount of flotation and the weight of the boom This means that the float must provide enough buoyancy to balance the weight of the boom with the force exerted by currents and waves, thereby ... by the reserve buoyancy and the flexibility of the boom A boom with good heave response will move with the waves on the surface of the water and not be alternately submerged and thrust out of the

Ngày tải lên: 11/08/2014, 04:20

... including the thickness of the oil being recovered, the extent of weathering and emulsification of the oil, the presence of debris, and weather conditions at the time of recovery ... percentage of oil in the recovered product The higher the value, the less the amount of water and thus the better the skimmers’ performance so the ship can withstand severe weather ... variety of factors including the type of oil spilled, the properties of the oil such as viscosity, the thickness of the slick, sea conditions, wind speed, ambient temper- ature, and the presence of

Ngày tải lên: 11/08/2014, 04:20

... or truck The vacuum pump creates a vacuum in the tank and the oil moves directly through a hose or pipe to the tank from the skimmer or the source of the oil The oil does not go through the pump, ... of hydrocarbon fuels Often the equipment at refineries cannot handle oils with debris, excessive amounts of water, or other contaminants and the cost of pre-treating the oils can far exceed the ... Performance of Pumps The performance of pumps is usually measured in terms of the volume displaced per unit of time at a given viscosity, suction head, and pressure head The suction head is the maximum

Ngày tải lên: 11/08/2014, 04:20

... type of dispersant applied, sea energy, salinity of the water, and water temperature The composition of the oil is the most important of these factors, followed closely by sea energy and the amount ... yield the same amount of dispersion as when the sea energy is high The effect of sea energy when the same amount of dispersant is used on several different types of oil is shown in Table 9 In the ... rapid clearance of the oil in the dispersant drop zone without the formation of the usual white to coffee-coloured plume in the water column This is very detrimental and wastes the dispersant

Ngày tải lên: 11/08/2014, 04:20

... technique, the integrity of the source of the spill and the possibility of further spillage is always a priority If there is any possibility that the fire could flash back to the source of the spill, ... content in the oil did not affect either the ignitability of the oil or the efficiency of the burn Chemical emulsion breakers can be used to break down enough of the emulsion to allow the fire ... oxygenation of the oil Similar analysis of the residue shows that the same minority compounds are present at about the same levels The bulk of the residue is unburned oil without some of the volatile

Ngày tải lên: 11/08/2014, 04:20

... characteristics of the shoreline, and others to conditions at the time the oil is deposited on the shoreline, such as weather andwaves These factors include the type and amount of oil, the degree of weathering ... composition, the type and sensitivity of biota on the beach,and the steepness of the shore Other important factors are the existence of a high tide berm on the beach,whether the oil is deposited in the ... degree of weathering of the oil, both before it reaches the shoreline and while on the shoreline, thetemperature, the state of the tide when the oil washes onshore, the type of beachsubstrate,

Ngày tải lên: 11/08/2014, 04:20

... adheres to the soil This depends on the adhesion properties of the spilled product and the nature of the soil More of the adhered oil is moved downwards by rainfall percolating through the soil The ... contain water, the oil may not penetrate at all Movement of Oil on Land Surface Both the properties of the oil and the nature of the soil materials affect how rapidly the oil penetrates the soil and ... moisture conditions in the soil, the slope of the land, and the level and flow rate of the groundwater Other factors, which vary in different habitats, are the presence of vegetation and its type

Ngày tải lên: 11/08/2014, 04:20

... that determine the toxicity of hydrocarbons are the salinity andtemperature of the water, the abundance of food, and the general health of the species Oil exposure can cause a range of physiological ... along much of the shorelines in the tropics Theyprovide the habitat for a wide diversity of other life Mangroves are supported by acomplex, interlaced system of prop roots The base of the roots ... via the food chain Bioaccumulation, the accumulation of toxins in theflesh, rarely occurs since the components of oil are generally metabolized by thereceiving organism The effects of oil on the

Ngày tải lên: 11/08/2014, 04:20

... AuthenticationBasic Principles Authentication must identify: 1 Something the user knows 2 Something the user has 3 Something the user is This is done before user can use the system Trang 11Authentication ... Trang 12Authentication Using Passwords• How a cracker broke into LBL – a U.S Dept of Energy research lab Trang 13Authentication Using PasswordsThe use of salt to defeat precomputation of , , , ... Acts of God - fires, floods, wars 2 Hardware or software errors - CPU malfunction, bad disk, program bugs 3 Human errors - data entry, wrong tape mounted Trang 5Basics of CryptographyRelationship

Ngày tải lên: 17/10/2014, 07:22

... of websites on the Internet as well as the workstations that are connected to the web IP addresses are made up of four sets of numbers called “Octets” There are two types of IP Addresses: Static ... Sequence ID ID’s where the information belongs in relation to the rest of the information End of Message ID’s the end of the packet Fiber Optic Cable Switches and Hubs Trang 23The InternetHow Information ... reassembled Each part of the packet has a specific function: Header Provides the complete destination address for the packet Data Block The portion of the overall information carried by the packet Sequence

Ngày tải lên: 24/10/2014, 13:22

... simultaneously, the impact on the equilibrium price and quantity is determined by: 1) The relative size and direction of the change 2) The shape of the supply and demand curves Trang 27Elasticities of ... 1Chapter 2The Basics of Supply and Demand The Basics of Supply and Demand Trang 2Topics to Be Discussed Supply and Demand  The Market Mechanism  Changes in Market Equilibrium  Elasticities of ... than the percent change in price We say the demand is price inelastic. Trang 33Elasticities of Supply and Demand The primary determinant of price elasticity of demand is the availability of

Ngày tải lên: 26/09/2015, 15:09

... Characteristics of the VRP The typical characteristics (Toth and Vigo, 2002b) of customers in the VRP include: • The vertex of the graph which denotes where the customer is located; • The amount of goods ... traversed by the vehicle; • The costs associated with the utilization of the vehicle; • The capacity of the vehicle, expressed as the maximum weight or volume the vehicle can load; • The devices ... aspects of the VRP, such as theory, practice, computer hardware and software, so that the VRP has become one of the greatest success stories of operations research The successful implementation of

Ngày tải lên: 04/10/2015, 15:58

... Surface (Parabolic Section) Basics of Radio AstronomyBasics of Radio Astronomy Basics of Radio AstronomyBasics of Radio Astronomy Basics of Radio Astronomy for thefor the for thefor the for the Goldstone-Apple ... samples of wavelength ranges, the temperatures of the matter emitting in that range, and some example sources of such thermal radiation. The hotter the object, the shorter is the wavelength of the ... distance, this phenomenon has the effect of rotating the plane of the linearly polar- ized wave. A measure of the amount of rotation can give a value of the density of a plasma. Magnetic field...

Ngày tải lên: 19/01/2014, 14:03

... b) the ASBRs act as iBGP next-hops for their AS; thus, each SP needs to know of the other SP’s core only the addresses of the ASBRs. In case c), the SPs exchange the loopback addresses of their ... tighten security of the core, but the security of the BGP/MPLS IP VPN architecture depends on the security of the service provider. If the service provider is not trusted, the only way to fully ... Similar to IP spoofing attacks, where an attacker fakes the source IP address of a packet, it is also theoretically possible to spoof the label of an MPLS packet. In the first section, the assumption...

Ngày tải lên: 14/02/2014, 16:20