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8,921 Matching Results
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Towards a Theory of Electronic Communication and Protest
Paper seeks to explore the impact of electronic communication on social protest movements and how individuals petition for redress of grievances against the government.
Date:
2012
Creator:
Stoner, Byron
System:
The UNT Digital Library
Care, Communication, Support: Core for Designing Meaningful Online Collaborative Learning
Article describes study seeking to identify emergent themes regarding higher education instructors’ perceptions concerning the provision of collaborative learning activities and opportunities in their online classroom.
Date:
December 2017
Creator:
Robinson, Heather; Kilgore, Whitney & Warren, Scott J.
System:
The UNT Digital Library
Unification of quantum theory and classical physics
A program is described for unifying quantum theory and classical physics on the basis of the Copenhagen-interpretation idea of external reality and a recently discovered classical part of the electromagnetic field. The program effects an integration of the intuitions of Heisenberg, Bohr, and Einstein.
Date:
July 1, 1985
Creator:
Stapp, Henry P.
System:
The UNT Digital Library
Improving risk communication through interactive training in communication skills
This paper describes a workshop in communication and public speaking skills recently conducted for a group of public officials whose responsibilities include presenting risk information at public meetings associated with hazardous waste sites. We detail the development and execution of the 2 1/2 day workshop, including the development and integration of a 45-minute video of a simulated public meeting used to illustrate examples of good and bad communication behaviors. The workshop uses a mock public meeting video, participatory video exercises, role-playing, and instructor, and a resource text. This interactive approach to teaching communication skills can help sensitize scientists to the public's understanding of risk and improve scientists' confidence and effectiveness in communicating scientific information. 10 refs., 1 fig.
Date:
January 1, 1990
Creator:
White, D. A. & White, R. K.
System:
The UNT Digital Library
A doubly logarithmic communication algorithm for the Completely Connected Optical Communication Parallel Computer
In this paper we consider the problem of interprocessor communication on a Completely Connected Optical Communication Parallel Computer (OCPC). The particular problem we study is that of realizing an h-relation. In this problem, each processor has at most h messages to send and at most h messages to receive. It is clear that any 1-relation can be realized in one communication step on an OCPC. However, the best known p-processor OCPC algorithm for realizing an arbitrary h-relation for h > 1 requires {Theta}(h + log p) expected communication steps. (This algorithm is due to Valiant and is based on earlier work of Anderson and Miller.) Valiant`s algorithm is optimal only for h = {Omega}(log p) and it is an open question of Gereb-Graus and Tsantilas whether there is a faster algorithm for h = o(log p). In this paper we answer this question in the affirmative by presenting a {Theta} (h + log log p) communication step algorithm that realizes an arbitrary h-relation on a p-processor OCPC. We show that if h {le} log p then the failure probability can be made as small as p{sup -{alpha}} for any positive constant {alpha}.
Date:
January 20, 1993
Creator:
Goldberg, L. A.; Jerrum, M.; Leighton, T. & Rao, S.
System:
The UNT Digital Library
Appealing to Goodwill or YOLO-Promoting Conservation Volunteering to Millenials
This article discusses effective communication of conservation volunteering travel opportunities to young people.
Date:
December 26, 2016
Creator:
Nisbett, Gwendelyn S. & Strzelecka, Marianna
System:
The UNT Digital Library
Reducing communication inefficiencies for a flexible programming paradigm
The ACPMAPS system at Fermilab has been upgraded to 50 GF by inserting new CPU modules, based on the Intel i860. This ten-fold increase in power, utilizing the identical communications backbone, places the system in a different realm: The transfer latency and overheads are now greater, relative to the cost of a floating point operation. We explore the consequences for programs written using CANOPY, which relies on low communications latencies. We present techniques for alleviating the efficiency decrease, by coalescing transfers, without abandoning the considerable advantages of the CANOPY paradigm.
Date:
November 1, 1992
Creator:
Fischler, M.; Gao, M.; Hockney, G.; Isely, M. & Uchima, M.
System:
The UNT Digital Library
Reducing communication inefficiencies for a flexible programming paradigm
The ACPMAPS system at Fermilab has been upgraded to 50 GF by inserting new CPU modules, based on the Intel i860. This ten-fold increase in power, utilizing the identical communications backbone, places the system in a different realm: The transfer latency and overheads are now greater, relative to the cost of a floating point operation. We explore the consequences for programs written using CANOPY, which relies on low communications latencies. We present techniques for alleviating the efficiency decrease, by coalescing transfers, without abandoning the considerable advantages of the CANOPY paradigm.
Date:
November 1, 1992
Creator:
Fischler, M.; Gao, M.; Hockney, G.; Isely, M. & Uchima, M.
System:
The UNT Digital Library
Explicitly teaching five technical genres to English first-language adults in a multi-major technical writing course
In this article, the author reports the effects of explicitly teaching five technical genres to English first-language students enrolled in a multi-major technical writing course. Previous experimental research has demonstrated the efficacy of explicitly teaching academic writing to English first-language adults, but no comparable study on technical writing exists.
Date:
2014
Creator:
Boettger, Ryan K.
System:
The UNT Digital Library
Fiber optic communication links
Fiber optics is a new, emerging technology which offers relief from many of the problems which limited past communications links. Its inherent noise immunity and high bandwidth open the door for new designs with greater capabilities. Being a new technology, certain problems can be encountered in specifying and installing a fiber optic link. A general fiber optic system is discussed with emphasis on the advantages and disadvantages. It is not intended to be technical in nature, but a general discussion. Finally, a general purpose prototype Sandia communications link is presented.
Date:
January 1, 1980
Creator:
Meyer, R. H.
System:
The UNT Digital Library
Interprocessor communication with memory constraints
Many parallel applications require periodic redistribution of workloads and associated data. In a distributed memory computer, this redistribution can be difficult if limited memory is available for receiving messages. The authors propose a model for optimizing the exchange of messages under such circumstances which they call the minimum phase remapping problem. They first show that the problem is NP-Complete, and then analyze several methodologies for addressing it. First, they show how the problem can be phrased as an instance of multi-commodity flow. Next, they study a continuous approximation to the problem. They show that this continuous approximation has a solution which requires at most two more phases than the optimal discrete solution, but the question of how to consistently obtain a good discrete solution from the continuous problem remains open. Finally, they devise a simple and practical approximation algorithm for the problem with a bound of 1.5 times the optimal number of phases.
Date:
May 30, 2000
Creator:
PINAR,ALI & HENDRICKSON,BRUCE A.
System:
The UNT Digital Library
Interprocessor communication with limited memory
Many parallel applications require periodic redistribution of workloads and associated data. In a distributed memory computer, this redistribution can be difficult if limited memory is available for receiving messages. We propose a model for optimizing the exchange of messages under such circumstances which we call the minimum phase remapping problem. We first show that the problem is NP-Complete, and then analyze several methodologies for addressing it. First, we show how the problem can be phrased as an instance of multi-commodity flow. Next, we study a continuous approximation to the problem. We show that this continuous approximation has a solution which requires at most two more phases than the optimal discrete solution, but the question of how to consistently obtain a good discrete solution from the continuous problem remains open. We also devise simple and practical approximation algorithm for the problem with a bound of 1.5 times the optimal number of phases. We also present an empirical study of variations of our algorithms which indicate that our approaches are quite practical.
Date:
May 7, 2003
Creator:
Pinar, Ali & Hendrickson, Bruce
System:
The UNT Digital Library
Communication: From Molecules to Mars
An analysis is made of the energetic, molecular, macromolecular and organizational steps which appear to be essential for the development of a living cell from a nonliving origin. Accepting the current view of the primitive atmosphere of the earth, experimental demonstration for the formation of the fundamental molecules of living organisms (amino acids, fatty acids, purines and pyrimidines) under the influence of available energy sources (ultraviolet light, ionizing radiation and electric discharge) is presented.
Date:
August 1, 1962
Creator:
Calvin, Melvin
System:
The UNT Digital Library
Risk communication in environmental restoration programs
The author advocates adoption of a convergence model in place of the traditional source-receiver model of communication for communicating with members of the public who have a stake in remediation of a nearby site. The source-receiver model conceives of communication as the transmission of a message from a risk management agency (sender) to a target audience of the public (receivers). The underlying theme is that the sender intends to change the perception of the receiver of either the issue or the sender of information. The theme may be appropriate for health campaigns which seek to change public behavior; however, the author draws on her experience at a DOE site undergoing remediation to illustrate why the convergence model is more appropriate in the context of cleanup. This alternative model focuses on the Latin derivation of communication as sharing or making common to many, i.e., as involving a relationship between participants who engage in a process of communication. The focus appears to be consistent with recently issued DOE policy that calls for involving the public in identifying issues and problems and in formulating and evaluating decision alternatives in cleanup. By emphasizing context, process and participants, as opposed to senders and receivers, the …
Date:
April 1, 1993
Creator:
Bradbury, J.A.
System:
The UNT Digital Library
Risk communication in environmental restoration programs
The author advocates adoption of a convergence model in place of the traditional source-receiver model of communication for communicating with members of the public who have a stake in remediation of a nearby site. The source-receiver model conceives of communication as the transmission of a message from a risk management agency (sender) to a target audience of the public (receivers). The underlying theme is that the sender intends to change the perception of the receiver of either the issue or the sender of information. The theme may be appropriate for health campaigns which seek to change public behavior; however, the author draws on her experience at a DOE site undergoing remediation to illustrate why the convergence model is more appropriate in the context of cleanup. This alternative model focuses on the Latin derivation of communication as sharing or making common to many, i.e., as involving a relationship between participants who engage in a process of communication. The focus appears to be consistent with recently issued DOE policy that calls for involving the public in identifying issues and problems and in formulating and evaluating decision alternatives in cleanup. By emphasizing context, process and participants, as opposed to senders and receivers, the …
Date:
April 1, 1993
Creator:
Bradbury, J. A.
System:
The UNT Digital Library
Independent communication messages: methodology and applications
Information flowing on communication buses is ordinarily ``non-random`` in the sense that data entities are not equally likely and independent. This is because they have relationships to each other and to physical occurrences to which they may be responding. Random data would convey no information or meaning. From a different viewpoint, there can be applications for creating randomness characteristics, and four of these are described in this paper. Two examples derive from cryptology and the other two from safety. One cryptology application described is the generation of random numbers for use as, for example, keys, hash functions, nonces, and seeds. The other is for inter-message ``padding`` to resist traffic analysis by masking when data are being transmitted and when the channel is conveying no information. One of the safety applications described is the ``unique signal`` approach used in modern nuclear weapon electrical safety. The other is the use of unique signals as non-weapon critical-operation control functions. Both of these safety applications require provisions to help assure randomness characteristics in any inadvertently occurring inputs. In order to satisfy these cryptology and safety needs, communication strategies are described that generate or selectively encourage independent (unrelated) symbols or messages.
Date:
September 1, 1997
Creator:
Cooper, J.A.
System:
The UNT Digital Library
Position Estimation of Transceivers in Communication Networks
With rapid developments in wireless sensor networks, there is a growing need for transceiver position estimation independent of GPS, which may not be available in indoor networks. Our approach is to use range estimates from time-of-flight (TOF) measurements, a technique well suited to large bandwidth physical links, such as in ultra-wideband (UWB) systems. In our UWB systems, pulse duration less than 200 psecs can easily be resolved to less than a foot. Assuming an encoded UWB physical layer, we first test positioning accuracy using simulations. We are interested in sensitivity to range errors and the required number of ranging nodes, and we show that in a high-precision environment, such as UWB, the optimal number of transmitters is four. Four transmitters with {+-}20ft. range error can locate a receiver to within one or two feet. We then implement these algorithms on an 802.11 wireless network and demonstrate the ability to locate a network access point to approximately 20 feet.
Date:
January 20, 2004
Creator:
Dowla, F. & Kent, C.
System:
The UNT Digital Library
What is interdisciplinary communication? Reflections on the very idea of disciplinary integration
Article discussing interdisciplinary communication and reflections on the idea of disciplinary integration.
Date:
July 1, 2013
Creator:
Holbrook, J. Britt
System:
The UNT Digital Library
Communication through Mathematics: The Effects on Mathematic Reasonableness
Paper describes a study focused on the efficiency of using prescribed tools to aid in justification and reasonableness in solving mathematical problems.
Date:
2014
Creator:
Lopez, Lorraine
System:
The UNT Digital Library
Compact location problems with budget and communication constraints
The authors consider the problem of placing a specified number p of facilities on the nodes of a given network with two nonnegative edge-weight functions so as to minimize the diameter of the placement with respect to the first weight function subject to a diameter or sum-constraint with respect to the second weight function. Define an ({alpha}, {beta})-approximation algorithm as a polynomial-time algorithm that produces a solution within {alpha} times the optimal value with respect to the first weight function, violating the constraint with respect to the second weight function by a factor of at most {beta}. They show that in general obtaining an ({alpha}, {beta})-approximation for any fixed {alpha}, {beta} {ge} 1 is NP-hard for any of these problems. They also present efficient approximation algorithms for several of the problems studied, when both edge-weight functions obey the triangle inequality.
Date:
July 1, 1995
Creator:
Krumke, S. O.; Noltemeier, H.; Ravi, S. S. & Marathe, M. V.
System:
The UNT Digital Library
Compact location problems with budget and communication constraints
We consider the problem of placing a specified number p of facilities on the nodes of a given network with two nonnegative edge-weight functions so as to minimize the diameter of the placement with respect to the first distance function under diameter or sum-constraints with respect to the second weight function. Define an ({alpha}, {beta})-approximation algorithm as a polynomial-time algorithm that produces a solution within a times the optimal function value, violating the constraint with respect to the second distance function by a factor of at most {beta}. We observe that in general obtaining an ({alpha}, {beta})-approximation for any fixed {alpha}, {beta} {ge} 1 is NP-hard for any of these problems. We present efficient approximation algorithms for the case, when both edge-weight functions obey the triangle inequality. For the problem of minimizing the diameter under a diameter Constraint with respect to the second weight-function, we provide a (2,2)-approximation algorithm. We. also show that no polynomial time algorithm can provide an ({alpha},2 {minus} {var_epsilon})- or (2 {minus} {var_epsilon},{beta})-approximation for any fixed {var_epsilon} > 0 and {alpha},{beta} {ge} 1, unless P = NP. This result is proved to remain true, even if one fixes {var_epsilon}{prime} > 0 and allows the algorithm to …
Date:
May 1, 1995
Creator:
Krumke, S. O.; Noltemeier, H.; Ravi, S. S. & Marathe, M. V.
System:
The UNT Digital Library
SSC high speed communication channel and interconnects
This paper investigates potential metallic and optical technology applications in SSC high speed interconnects and/or communication channels. Primary focus will be placed on evaluating several metallic and optical interconnect structures. 7 refs., 3 figs.
Date:
January 1, 1990
Creator:
Cooke, B. J.; Smith, R. C. & Wagner, R.
System:
The UNT Digital Library
Rooting the Study of Communication Activism in an Attempted Book Ban
This article discusses how strong, sustained university-community partnerships can mitigate criticism and skepticism when scholars and their students delve into political and contested questions.
Date:
2015
Creator:
Jovanovic, Spoma; Congdon, Mark; Miller, Crawford & Richardson, Garrett
System:
The UNT Digital Library
Bergson and the unification of the sciences
Louis De Broglie and M. Capek have described some interesting similarities between the philosophical ideas of Henri Bergson and the profound conceptual changes introduced into physics by quantum theory and the theory of relativity. These similarities are neither identities nor direct causal links, and hence physicists are likely to regard them as mere curiosities having no import for the development of science. However, another view is possible: if Bergson's thinking presaged, at least in spirit, these two revolutionary advances in physics then his intuitions may accord sufficiently with nature to provide useful guidance in the approach to other deep problems in science. Pursuing this idea I shall indicate here how Bergson's intuitions suggest a possible approach to perhaps the fundamental problem of contemporary science, namely the problem of constructing an overarching theoretical framework for unifying the various branches of science from psychology through biology to physics. 19 refs.
Date:
February 1, 1985
Creator:
Stapp, Henry P.
System:
The UNT Digital Library