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Topic: Rendezvous problem


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In the News (Wed 30 Dec 09)

  
  Rendezvous - Wikipedia, the free encyclopedia
Rendezvous is the short name for Virtual Rendezvous, both an open software project and the company leading it.
Rendezvous at the Mountain, is the title of the last level of the computer game Lemmings.
Rendezvous Entertainment is a contenporary jazz label which co-founded by saxphonist Dave Koz, Frank Cody and Hyman Katz in 2002.
en.wikipedia.org /wiki/Rendezvous   (332 words)

  
 Enchanted Rendezvous
Rendezvous had to be a central element of all future flight endeavors—whatever they might be.
To visualize the problem, Houbolt built a gadget with a globe for the Earth and a small ball on the end of a short piece of coat hanger, all connected to a variable-ratio gearbox.
He insisted that his committee be allowed to study rendezvous "in the broadest terms" possible because, as he presciently argued, the technique was bound to play a major role in almost any advanced space mission NASA might initiate.
www.hq.nasa.gov /office/pao/History/monograph4/commit.htm   (964 words)

  
 The Rendezvous Problem   (Site not responding. Last check: 2007-10-31)
This is roughly the problem you face if you go to a shopping mall with a friend, become separated, and then wonder how to find your friend in minimal time, knowing that he may also be hunting for you.
The problem arose through modelling issues that arise in synchonizing or de-sychonizing parallel processors performing a calculation.
The rules of this problem are that the algorithm is not allowed to break symmetry by referring to some external information, such as saying `the older person should do X, while the younger does Y.' (The HHGTTG cannot rely on readers knowing such facts about one another.
www.statslab.cam.ac.uk /~rrw1/abstracts/rendezvous.html   (341 words)

  
 Rendezvous
The modern Rendezvous is patterned after the annual gathering of Mountainmen.
This is the NMLRA Eastern Primitive Rendezvous in Aurora, WV.
Rendezvous is a lot of fun for the whole family and it can even be educational.
www.geocities.com /Heartland/Valley/8501/rendezvous.html   (1956 words)

  
 2002 Buick Rendezvous Road Test
The Buick Rendezvous is essentially the identical vehicle to the Pontiac Aztek.
Rendezvous also uses a heads-up display to advise the driver of speed, turn signals, high beams and low fuel.
Rendezvous has all the neat features of Aztek, including the ability to make the rear a tent and sleep in the back if you want.
www.familycar.com /RoadTests/BuickRendezvous   (990 words)

  
 Synchronization of Java Threads Using Rendezvous   (Site not responding. Last check: 2007-10-31)
Rendezvous, a mechanism for imposing an ordering on events in an arbitrary number of concurrent threads, was developed for Java.
The rendezvous is shown to be useful in synchronous applications, where ordering of certain events between threads is necessary to ensure determinism.
In summary, a rendezvous mechanism in Java was found to be quite valuable for use in a wide variety of applications, where it is necessary to synchronize events in multiple threads to ensure determinacy.
www.eecs.berkeley.edu /~jimy/java/rendezvous   (2993 words)

  
 Mechanical and Aerospace Engineering [SS Penner Lecture Series]
Rendezvousing: The problem of interest here is concerned with a system consisting of a group of n mobile autonomous agents which can all move in the plane.
The multi-agent rendezvous problem [2] is to devise "local" control strategies, one for each agent, which without any active communication between agents, cause all members of the group to eventually rendezvous at single unspecified location.
The closing ranks problem for a given rigid formation which has lost a single agent, is to find new links between some agent pairs which, if maintained cause the resulting formation to again be rigid.
maeweb.ucsd.edu /SSPenner_Lecture/MORSE   (574 words)

  
 Macintosh: alias unknown issue
So, Powerbooks should be set up to use their "rendezvous" name as their server in the license.dat file for license manager.
Rendezvous is the code name for Apple's new networking technology that uses standard network protocols to automatically discover and connect devices over any IP network.
Since it is built into the OS, the Rendezvous name is part of the NetInfo database that is used by the system to manage user accounts, groups, passwords, etc., and therefore it is always a recognized "server" name for Matlab license manager.
www.whoi.edu /CIS/services/backup/rendezvous-issue.html   (274 words)

  
 [No title]   (Site not responding. Last check: 2007-10-31)
This problem description document and its companion documents that describe specific resolution and rendezvous approaches obsolete prior contributions, i.e., [9].
As mentioned before, the rendezvous procedure encompasses all required steps for two nodes to obtain enough information about the other peer to be able to address packets to it.
One drawback of rendezvous servers is that they may introduce triangle routing: packets no longer follow the direct path between two peers, but instead flow through the rendezvous server.
www.faqs.org /ftp/internet-drafts/draft-eggert-hiprg-rr-prob-desc-00.txt   (3170 words)

  
 Contributions of the session   (Site not responding. Last check: 2007-10-31)
The multi-agent rendezvous problem is to devise local control strategies, one for each agent, which without any active communication between agents, cause all members of the group to eventually rendezvous at single unspecified location.
In this paper, we consider the problem of active sensing using mobile sensor nodes that are jointly estimating the state of a dynamic target as a sensor network.
One of the most important problems arising from this framework is the computation of the search number, i.e., the smallest number of pursuers necessary to capture a single evader in a finite time, regardless of the escaping policy adopted by the evader.
www.cse.ucsc.edu /~jcortes/news/cdc04-session/node3.html   (1178 words)

  
 Lunar Orbit Rendezvous and the Apollo Program
Pictured is the Apollo lunar module during rendezvous in lunar orbit with the command module.
John C. Houbolt explains the lunar orbit rendezvous concept that, in the opinion of many historians, was chief among the reasons why the U.S., in less than a decade, managed humankind's first extraterrestrial excursions.
If rendezvous had to be part of Project Apollo, critics of LOR felt that it should be done only in Earth orbit.
oea.larc.nasa.gov /PAIS/Rendezvous.html   (2756 words)

  
 webservices.xml.com: Rendezvous with Web Services
Apple is branding ZeroConf as Rendezvous, and using this emerging technology as a substitute for the old AppleTalk standard, using it in Mac OS 10.2 Jaguar and in some iApps like Safari.
Rendezvous is an amazing technology that brings simplicity to networking, making it easy to create local networks and with multiple devices, services and data sharing.
Rendezvous and web services are natural combination: once services are discovered with Rendezvous, SOAP and XML provides a flexible and standard platform for communication.
webservices.xml.com /pub/a/ws/2003/06/24/rendezvous.html   (1408 words)

  
 ONDotnet.com -- Client/Server Rendezvous on the LAN
This is known as the "rendezvous" problem--how services advertise their presence, and how clients discover them--and it's nearly as old as the notion of client-server architecture itself.
One problem with directory-based rendezvous technologies (those targeted toward LAN-scale applications) is that they either require your customers to purchase and install special directory software, or greatly complicate the installation of your app, or both.
In a broadcast-based rendezvous architecture, callers will simply connect to the hostname specified in the response (which is not trustworthy at all--the best you can do is display a list of responding server names to your user, and let them absent-mindedly select one).
www.ondotnet.com /pub/a/dotnet/2003/04/14/clientserver.html   (2770 words)

  
 baker-v6ops-end2end-00.txt
There is a problem in the second step, however, if dynamic tunneling (or translation) is used; there must be some means for a system on one side of an IPv4-only domain to determine the ingress and egress gateways between which to tunnel.
The problems those sections raise result from the complexities in the network related to the transition strategies in use, which from the perspective of the argument in [Saltzer] are unnecessary complexities that result in a failure of the network to deliver connectivity.
The problems that extra complexity causes are acceptable only because connectivity is in fact guaranteed in another way.
ietfreport.isoc.org /idref/draft-baker-v6ops-end2end   (3984 words)

  
 relativistic signal rendezvous problem   (Site not responding. Last check: 2007-10-31)
If we presume (as the earthlings in the problem might) that the earth is motionless and the spacecraft is receding, the problem is simple.
If we presume (as the astronauts might) that the spaceship is motionless, and the earth is receding, the problem is a bit more complicated because we have to account for earth being in motion while the signal travels, but it's not too bad.
This is because the statement in the problem as posed that the signal is sent when the earth clock reads 10 is giving a time to an event occuring at a distance.
sheol.org /throopw/jenkins-signal-rendezvous.html   (741 words)

  
 Mac OSX Remote Printing via Rendezvous   (Site not responding. Last check: 2007-10-31)
While the faithful reader finds printer sharing in the Mac OS X context described as Rendezvous based in most publications, the actually used scheme is in fact CUPS broadcasting, indicated by the "Shared Printers" menu entry in print dialogs (see example screen shot).
Rendezvous printing, which outlines the tags that have to be supplied in the device (read: server) configuration.
The precautions to get Rendezvous working on a linux box are rather extensive and one might argue that this is quite a lot of work for a "Zero Config" network.
horus.comlab.uni-rostock.de /rendezvous   (1813 words)

  
 MacDevCenter.com -- Rendezvous Picture Transfer with Panther
Rendezvous should automatically be enabled on your Panther computer.
So far, Rendezvous image sharing has been limited to pictures stored on the memory card or displayed from the camera right after exposure via remote firing.
I am having another problem on my iBook the firewall is grayed out and status is unavailable.
www.macdevcenter.com /pub/a/mac/2003/11/10/rendezvous_images.html   (3273 words)

  
 Rendezvous problem - Wikipedia, the free encyclopedia
The rendezvous dilemma is related to the prisoner's dilemma and can be formulated in this way:
Examples of this class of problem are known as rendezvous problems.
As well as being problems of theoretical interest, rendezvous problems include real-world problems with applications in the fields of synchronization, operating system design, operations research and even search and rescue operations planning.
en.wikipedia.org /wiki/Rendezvous_problem   (352 words)

  
 Multi-Robot Rendezvous   (Site not responding. Last check: 2007-10-31)
The problem of rendezvous is ubiquitous in nature.
Humans are equally familiar with the problem of rendezvous, as any family whose members become separated at a large zoo or mall well knows.
Ours is the first work to formalize the characteristics of the rendezvous problem, and we approach it by proposing several alternative algorithms that the robots could use in attempting to rendezvous quickly while continuing to explore.
www.cim.mcgill.ca /research/95-96AnnualReport/node59.html   (218 words)

  
 Celestial Mechanics, Lecture 3: Transfer Orbits   (Site not responding. Last check: 2007-10-31)
Rendezvous with a moving object involves the extra problem of matching the spaceship's time of flight with that of the destination planet.
The delta-vee for arrival is found by subtracting the HEC velocity vector in the transfer orbit at arrival from the velocity of the rendezvous object at the time of arrival.
The components of the rendezvous velocity vector can be calculated from the orbital elements of the destination planet and the mean anomaly for the destination planet (in its own orbit) at the time of arrival.
www.jabpage.org /posts/trans3.html   (3670 words)

  
 weird iTunes/rendezvous problem - The macosxhints Forums
This problem was there before the "upgrade" to iTunes 4.0.1.
Hi have a very similar problem, so I thought he might be good to add it to this thread rather than starting a new one.
The iMac is connected by ethernet to an SMC wireless barricade 7004AWBR router; the iBook is connected to the router through airport.
forums.macosxhints.com /showthread.php?p=63835   (441 words)

  
 Chapter 15 -- The Next Generation: Gemini and Voskhod   (Site not responding. Last check: 2007-10-31)
Gemini 6 with Wally Schirra and Tom Stafford was to launch on October 26, 1965, but their Agena rendezvous vehicle, the primary reason for the mission, failed to achieve orbit.
Because the mission involved rendezvous, the mission was changed to rendezvous with Gemini 7, launched on December 4, 1965.
Gemini 12 launched on November 11, 1966 and rendezvoused with the Agena 3 hours and 45 minutes into the mission; this is remarkable considering the fact that radar reception with the Agena was so bad after liftoff that the rendezvous was done without a computer.
www.space.edu /projects/book/chapter15.html   (4967 words)

  
 Rendezvous   (Site not responding. Last check: 2007-10-31)
The grapple end of the tether is accelerated upward by the tension in the tether (about 1.1 Gs) while gravity is pulling the rocket back to Earth (1 G).
For the rendezvous to work, the rocket has to get to the right place at the right time with very little room for error.
To do this it needs to know exactly where the tether is and where the rocket is. A system using the GPS satellites has been shown to have 6.5 meter accuracy during the ballistic phase of a suborbital rocket flight.
spacetethers.com /rendezvous.html   (536 words)

  
 Macworld: News: Apple to release Rendezvous as open source
Using Rendezvous, devices such as printers can be seen on a network with no setup from the end user.
Rendezvous is not Apple's first foray into the open source community -- with the release of Mac OS X, Apple became the largest vendor of Unix in the world.
Rendezvous and Darwin 6.0 and OpenDirectory (including LDAPv3 support) will be available from Apple's open source Web site in early September.
www.macworld.com /news/2002/08/29/rendezvous   (892 words)

  
 Enchanted Rendezvous
Houbolt's paper, "Problems and Potentialities of Space Rendezvous," first presented at the International Academy of Astronautics' International Symposium on Space Flight and Reentry Trajectories, was published under the same title in Astronautica Acta 7 (1961): 406-429.
This work related both to rendezvous and what a man could do at the controls, of course under simulated conditions, as well as the possibility of lunar orbit rendezvous" (p.
Both reports concluded that—although some forms of Earth-orbit rendezvous were also feasible and would have adequate weight margins—on the basis of "technical simplicity, scheduling, and cost considerations," LOR was the "most suitable" and the "preferred mode."
www.hq.nasa.gov /office/pao/History/monograph4/notes.htm   (4541 words)

  
 Atlas: Exploration a two sided rendezvous search problem using genetic algorithms. by Tracy Truong
A lost walker being searched for by a helicopter is a two sided search problem when the walker (the target) uses information about the location of the helicopter to modify their behaviour.
This problem has been explored for a limited set of NATO search paths being scan search, expanding square and decreasing square by Thomas et al.
This paper uses a genetic algorithm to search over the space of all possible search paths to find ones which are optimal or near optimal for a range of target speeds and search region sizes.
atlas-conferences.com /c/a/h/p/49.htm   (246 words)

  
 Layered Transmission and Caching for the Multicast Session Directory Service
One solution to this problem is proxy-based transcoding, where data streams are individually transformed according to the specification of each requesting receiver [7].
Although the active networks research community aims to solve this problem by offering a common platform for such services as part of the basic network service model [28], numerous research problems must be addressed before such an infrastructure is widely deployed.
To solve these problems, we propose an architecture in which the session originator allocates and announces addresses within its local scope and across the wide area over global scope, and session announcement ``agents'' in turn allocate and announce local addresses in remote regions.
bmrc.berkeley.edu /~aswan/papers/swan-mm98-html   (7587 words)

  
 Intel Research Seminars Listing - View Abstract   (Site not responding. Last check: 2007-10-31)
In this talk, two types of emergent behaviors of a large group of autonomous agents will be described, namely, the Multi-agent Flocking Problem and the Multi-agent Rendezvous Problem.
In both problems, provably correct distributed local rules are proposed.
In the Flocking problem the convergence of the group heading was proved using results in the convergence of matrix products and graph theory; while in the Rendezvous problem the convergence to a common unspecified location in was proved using the combination of convex analysis and standard Lyapunov function approach.
www.intel-research.net /Berkeley/ViewSeminarAbstract.asp?Index=257   (156 words)

  
 [No title]   (Site not responding. Last check: 2007-10-31)
THE RENDEZVOUS PROBLEM Two people are lost from each other a maze of n rooms.
If the problem is modified so that players are not symmetric and they are therefore allowed to follow different algorithms, i.e., one is a child and the other a parent, then the optimal solution is for the child to stay still while the parent looks for her (taking n/2 steps on average).
(I didn't intend to write so much about this problem, but I got carried away, thinking this might be an interesting problem for rec.puzzles or math.research, where I may post it.) Reference: Anderson, E.J. and Weber, R.R. (1990) The rendezvous problem on discrete locations", Journal of Applied Probability, 28, 839-851.
www.statslab.cam.ac.uk /~rrw1/abstracts/rendezvous   (713 words)

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