collision avoidance with stationary spherical objects

... after collision Wait for free medium Transmit frame If collision, stop transmission immediately Retransmit after random time (backoff) Basic CSMA/CA operation CSMA/CD vs CSMA/CA (2) CSMA/CA (Collision ... 3) 4) 5) CSMA/CA rule: Backoff before collision Wait for free medium Wait a random time (backoff) Transmit frame If collision, the stations not notice it Collision => erroneous frame => no ACK ... start sending their packets at the same time => collision! Station A ACK Station B Collision! Station C DIFS Basic CSMA/CA operation Backoff => collision probability is reduced Contending stations...

Ngày tải lên: 06/10/2014, 21:38

Ngày tải lên: 26/01/2014, 11:20

... Starting Out with C++ Series includes three books, one of which is sure to fit your course: • Starting Out with C++: Control Structures through Objects; • Starting Out with C++: Early Objects; • ... Null-terminated C-strings are used throughout, with the C++ string class covered briefly USE OF string OBJECTS Standard library string class objects are used throughout, with C-strings covered briefly INTRODUCTION ... Starting Out with C++: Brief Version The following chart will help you determine which book is right for your course FROM CONTROL STRUCTURES THROUGH OBJECTS BRIEF VERSION EARLY OBJECTS LATE INTRODUCTION...

Ngày tải lên: 12/02/2014, 21:20

... CONTENTS Foreword Preface Collisions and the Courts History of the Collision Regulations vii ix xi xiv INTERNATIONAL REGULATIONS FOR PREVENTING COLLISIONS AT SEA WITH COMMENTS P r A GENERAL ... longer requires such evidence Investigation of a collision If a collision occurs within UK territorial waters or if a UK ship is involved in a collision elsewhere or possibly in certain other ... restricted visibility) in particular With the considerable increase in the number of ships fitted with radar during the following years, coupled with a series of collisions involving such vessels,...

Ngày tải lên: 05/03/2014, 15:21

... Starting Out with C++ Series includes three books, one of which is sure to fit your course: • Starting Out with C++: Control Structures through Objects; • Starting Out with C++: Early Objects; • ... Null-terminated C-strings are used throughout, with the C++ string class covered briefly USE OF string OBJECTS Standard library string class objects are used throughout, with C-strings covered briefly INTRODUCTION ... Starting Out with C++: Brief Version The following chart will help you determine which book is right for your course FROM CONTROL STRUCTURES THROUGH OBJECTS BRIEF VERSION EARLY OBJECTS LATE INTRODUCTION...

Ngày tải lên: 06/03/2014, 00:22

Ngày tải lên: 19/03/2014, 00:20

... Null-terminated C-strings are used throughout, with the C++ string class covered briefly USE OF STRING OBJECTS Standard library string class objects are used throughout, with C-strings covered briefly INTRODUCTION ... Programming Challenges on-line, with automated assistance and feedback provided as needed It also provides instructors with information on student progress and helps with course management The double ... Accompany Starting Out with C++: Early Objects, 5th Edition, co-authored by Judy Walters, Dean Defino, and Michael Bardzell Textbook Web site A Web site for the Starting Out With C++ series of books...

Ngày tải lên: 19/03/2014, 14:13

... CONTENTS Foreword Preface Collisions and the Courts History of the Collision Regulations vii ix xi xiv INTERNATIONAL REGULATIONS FOR PREVENTING COLLISIONS AT SEA WITH COMMENTS P r A GENERAL ... longer requires such evidence Investigation of a collision If a collision occurs within UK territorial waters or if a UK ship is involved in a collision elsewhere or possibly in certain other ... restricted visibility) in particular With the considerable increase in the number of ships fitted with radar during the following years, coupled with a series of collisions involving such vessels,...

Ngày tải lên: 22/03/2014, 12:20

... idea is that the mobile nodes will collaborate with the stationary nodes (and with each other) in order to sample areas that are least covered by the stationary nodes In the context of WSNs, sensor ... choose the segment with the maximum number of empty cells, that is, the segment with the maximum number of cells with G(i, j) = (Alternatively, one can choose the segment with the least coverage ... of stationary nodes and a few mobile nodes The benefit of this architecture is that the mobile nodes collaborate with the stationary nodes so that they sample the areas least covered by the stationary...

Ngày tải lên: 21/06/2014, 22:20

... CONTENTS Foreword Preface Collisions and the Courts History of the Collision Regulations vii ix xi xiv INTERNATIONAL REGULATIONS FOR PREVENTING COLLISIONS AT SEA WITH COMMENTS P r A GENERAL ... longer requires such evidence Investigation of a collision If a collision occurs within UK territorial waters or if a UK ship is involved in a collision elsewhere or possibly in certain other ... restricted visibility) in particular With the considerable increase in the number of ships fitted with radar during the following years, coupled with a series of collisions involving such vessels,...

Ngày tải lên: 27/06/2014, 17:20

... range falls within a set detection range of 10m, the collision avoidance algorithm is activated Incorporated into the UAV simulated code is the Collision Avoidance Algorithm The Collision Avoidance ... flight and collision avoidance is expected of the UAV using information relayed only through onboard sensors Literature survey of existing works on collision avoidance and collision avoidance ... a collision avoidance algorithm A thorough theoretical study of the collision avoidance algorithm based on PN guidance was conducted, detailing how the information required for the collision avoidance...

Ngày tải lên: 03/10/2015, 20:58

... with a smaller gain The desired Y Li and A Safwat A B (a) OO neighbors with the shortest transmission range B A B A (b) DO/OD neighbors with the extended transmission range (c) DD neighbors with ... DF and at the receiver node due to HT A new scheme, namely, directional MAC with deafness avoidance and collision avoidance (DMAC-DACA), is proposed herein Switched-beam antennas are used in ... transmission as a failure DCF is a random access protocol, based on carrier sense multiple access with collision avoidance (CSMA/CA) In DCF, a node has to sense the channel idle for a distributed interframe...

Ngày tải lên: 21/06/2014, 23:20

... Exercise Working with Advanced Features 22 Lab Summary 27 Mapping Your Objects to Database Tables with LINQ to SQL Mapping Your Objects to Database Tables with LINQ ... Mapping Your Objects to Database Tables with LINQ to SQL Table of Contents Mapping Your Objects to Database Tables with LINQ to SQL Exercise Creating Your ... Entity Note: Creating a new entity is straightforward Objects such as Customer and Order can be created with the new operator as with regular C# Objects Of course you will need to make sure that...

Ngày tải lên: 06/08/2013, 17:30

... Cover the orange with an handkerchief When you remove the handkerchief, take the orange peel off the apple but keep it hidden within the material Casually drop the handkerchief (with the orange ... table with a ping-pong ball resting on it Put your thumbs through each end of the loop Lift your hands with the thread stretched between them and the ball appears to be floating in the air With ... one hand, with the back of the hand towards the audience Slowly open your fingers and the wand apparently sticks to the hand as if magnetised (see figure 1) Secret: Grip your wrist with your...

Ngày tải lên: 09/08/2013, 13:21

Ngày tải lên: 31/08/2013, 02:10

... through (with) p.v When you get through, get through with an activity, or get through doing an activity, you finish it or finish doing it / have so much homework that I might not get through with ... chicken out of, find out, kick back, 10 come down with, get along, monkey around with, come up, 12 go ahead,10 set up, fall over, go through with, work in, 131 I don't know when the train to ... It was difficult for Mrs Nelson to carry on after her husband died carry on (with) p.v When you carry on, carry on with an activity, or carry on doing an activity, you continue it or continue...

Ngày tải lên: 01/11/2013, 15:20

... each one boil down to, figure out, go through with, come down with, get around to, look forward to, come off, get out of, monkey around with, come up with, go after, put on, doze off, go back on, ... parents died, my grandparents let me live with them What did my grandparents do? 16 Mr Young told some people about the secret information What did Mr Young with the secret information? 17 I saw ... perfect: The tree has fallen over Remember that have can be combined with pronouns as 've: They've never heard of him and has with nouns and pronouns as's: The tree's fallen over He's never heard...

Ngày tải lên: 01/11/2013, 15:20

... if an object creates multiple delayed instances of another class, as the Interpreter does with Request objects, it will accept the created class's parameters in the same way, passing them to the ... parameter Under normal circumstances you shouldn't concern yourself with this package name (almost everything in Mason is done with lexically scoped my variables), but for historical reasons you're ... set_global() method These let you declare and assign to variables in the package you specified with in_package, without actually needing to specify that package again by name You may also want to control...

Ngày tải lên: 14/12/2013, 12:15

... stores an image as an OLE object that wraps the actual image This means that the image is prefixed with a variable-length header that must be stripped off to retrieve the image The length of this...

Ngày tải lên: 14/12/2013, 18:16