Applying Automated Theorem Proving to Computer Security

DTIC Science & Technology

2008-03-01

CS96]”. Violations of policy can also be specified in this model. La Padula [Pad90] discusses a domain-independent formal model which imple- ments a...Science Laboratory, SRI International, Menlo Park, CA, September 1999. Pad90. L.J. La Padula . Formal modeling in a generalized framework for ac- cess

A Comprehensive Validation Approach Using The RAVEN Code

DOE Office of Scientific and Technical Information (OSTI.GOV)

Alfonsi, Andrea; Rabiti, Cristian; Cogliati, Joshua J

2015-06-01

The RAVEN computer code , developed at the Idaho National Laboratory, is a generic software framework to perform parametric and probabilistic analysis based on the response of complex system codes. RAVEN is a multi-purpose probabilistic and uncertainty quantification platform, capable to communicate with any system code. A natural extension of the RAVEN capabilities is the imple- mentation of an integrated validation methodology, involving several different metrics, that represent an evolution of the methods currently used in the field. The state-of-art vali- dation approaches use neither exploration of the input space through sampling strategies, nor a comprehensive variety of metrics neededmore » to interpret the code responses, with respect experimental data. The RAVEN code allows to address both these lacks. In the following sections, the employed methodology, and its application to the newer developed thermal-hydraulic code RELAP-7, is reported.The validation approach has been applied on an integral effect experiment, representing natu- ral circulation, based on the activities performed by EG&G Idaho. Four different experiment configurations have been considered and nodalized.« less

Teaching with Technology in Higher Education: Understanding Conceptual Change and Development in Practice

ERIC Educational Resources Information Center

Englund, Claire; Olofsson, Anders D.; Price, Linda

2017-01-01

Research indicates that teachers' conceptions of and approaches to teaching with technology are central for the successful imple-mentation of educational technologies in higher education. This study advances this premise. We present a 10-year longitudinal study examining teachers' conceptions of and approaches to teaching and learning with…

Growth, Characterization and Device Development in Monocrystalline Diamond Films

DTIC Science & Technology

1993-10-31

configurations with lower strain energy Like planes: density are preferred. hk) hkl [uvw] (uvwl I.09 P’ The search method obtained from Eq. (3) is imple...has a transverse optical mode absorption peak at 1075 cm-1 [9]. Transmission FTIR was carried out on an Analect Instruments model fx-6260

NSW Executive Enhancements

DTIC Science & Technology

1981-06-01

independently on the same network. Given this reduction in scale, the projected impl widely distributed, fully replicated, synchronized dat design...Manager that "owns" other resources. This strategy requires minimum synchronization while providing advantages in reliability and robustness. 2 3...interactive tools on TENEX, transparent file motion and translation, and a primitive set of project management functions. This demonstration confirmed that

JPRS Report, China.

DTIC Science & Technology

1991-11-04

inthe lfinalie aalysis, nonommity economyc eand inescapable burdens, equalitarian distribution ten-ciency are, in the final analysis, noncommodity...conforms to the heavy industrial enterprise national economy onto an orderly course of operation. characteristic of a long production-results cycle , but...into a benign cycle of autonomy political indoctrination, and assure and supervise imple- in operation, responsibility for their own profits and

The Database Management Module of the Splice System.

DTIC Science & Technology

1983-06-01

standardization is the only wise chocs . E. FUNCTIONS OF THE EATABASE MkNAGEMENT MODULE As a result of onqoing research in thmc impl1msntaticn of SPLICE, thns...u an e-v Offset by one or mc--l orders of ma#-inuIs inorcvesnnt --L tue execution time cf user transacdrioas. Purthermore, ’is s-toraqe requlrement

Development of a Handheld Line Information Reader and Generator for Efficient Management of Optical Communication Lines

PubMed Central

Lee, Jaeyul; Kwon, Hyungwoo; Song, Jaewon; Jeon, Mansik; Kim, Jeehyun

2017-01-01

A handheld line information reader and a line information generator were developed for the efficient management of optical communication lines. The line information reader consists of a photo diode, trans-impedance amplifier, voltage amplifier, microcontroller unit, display panel, and communication modules. The line information generator consists of a laser diode, laser driving circuits, microcontroller unit, and communication modules. The line information reader can detect the optical radiation field of the test line by bending the optical fiber. To enhance the sensitivity of the line information reader, an additional lens was used with a focal length of 4.51 mm. Moreover, the simulation results obtained through BeamPROP® software from Synopsys, Inc. demonstrated a stronger optical radiation field of the fiber due to a longer transmission wavelength and larger bending angle of the fiber. Therefore, the developed devices can be considered as useful tools for the efficient management of optical communication lines. PMID:28837058

Summary of Research 1997 Department of Systems Management.

DTIC Science & Technology

1999-01-01

formulation and execution; impacts of budget allocation , reallocation, and reduction; imple- mentation of Defense Resource Management Systems; and the...flexible structure that can be applied to a wide range of resource allocation problems. PUBLICATIONS: Dolk, D., Murphy, M., and Thomas, G...policies, procedures, and rationale in deter- mining recruiting resource allocation decisions. The methodology relies on a review of the literature

East Europe Report

DTIC Science & Technology

1986-01-29

fulfillment of planned parameters, and must see to it that the programs for research and technological development will be fully imple- mented. The...productivity by developing and introducing new technology and raising the technological level, and the quality of products; -- developing cooperation in...production, :science, and technology , with -a view to accelerating scientific-technical pro.,res:s, this bei.ng a basic contlition for an intensive

Zirconia removable telescopic dentures retained on teeth or implants for maxilla rehabilitation. Three-year observation of three cases.

PubMed

Zafiropoulos, Gregory-George; Rebbe, Jochen; Thielen, Ulrich; Deli, Giorgio; Beaumont, Christian; Hoffmann, Oliver

2010-01-01

This report addresses maxillary restoration with removable telescopic crown-retained palatal free dentures. One patient with 7 natural teeth (PERIO), a second patient with 6 dental implants (IMPL), and a third patient with 2 natural teeth and 4 dental implants (IMPL-PERIO) were treated. Zirconia copings for natural teeth and individual zirconia implant abutments were fabricated in CAD/CAM and used as primary crowns. Electroformed gold copings were used as secondary telescopes. All maxilla supraconstructions were fabricated with zirconia and CAD/CAM. Patients were monitored during a 3-year period; all teeth and implants survived, and no biological or mechanical complications occurred. The peri-implant and periodontal conditions were healthy. While recognizing the limitations of this report, results showed that fabricating removable zirconia structures by means of CAD/CAM can yield highly functional and esthetic results. Galvanoforming technology is the preferable means of fabricating secondary crowns. The combination of these techniques and materials results in a prosthetic reconstruction of high quality, good fit, and biocompatibility. Long-term studies of large populations are necessary to investigate the clinical properties of the material utilized in this type of construction.

Overcoming Barriers to Technology Adoption in Small Manufacturing Enterprises (SMEs)

DTIC Science & Technology

2003-06-01

automates quote-generation, order - processing workflow management, perform- ance analysis, and accounting functions. Ultimately, it will enable Magdic...that Magdic imple- ment an MES instead. The MES, in addition to solving the problem of document manage- ment, would automate quote-generation, order ... processing , workflow management, perform- ance analysis, and accounting functions. To help Magdic personnel learn about the MES, TIDE personnel provided

Entanglement in a Quantum Annealing Processor

DTIC Science & Technology

2016-09-07

that QA is a viable technology for large- scale quantum computing . DOI: 10.1103/PhysRevX.4.021041 Subject Areas: Quantum Physics, Quantum Information...Superconductivity I. INTRODUCTION The past decade has been exciting for the field of quantum computation . A wide range of physical imple- mentations...measurements used in studying prototype universal quantum computers [9–14]. These constraints make it challenging to experimentally determine whether a scalable

16 CFR 455.5 - Spanish language sales.

Code of Federal Regulations, 2011 CFR

2011-01-01

... significa que el vendedor no hace promesas específicas de arreglar lo que requiera reparación cuando usted compra el vehículo o después del momento de la venta. Pero, las “garantías implícitas” de la ley estatal... required by § 455.2(b)(3): CONTRATO DE SERVICIO. Este vehículo tiene disponible un contrato de servicio a...

Soliton communication lines based on spectrally efficient modulation formats

DOE Office of Scientific and Technical Information (OSTI.GOV)

Yushko, O V; Redyuk, A A

2014-06-30

We report the results of mathematical modelling of optical-signal propagation in soliton fibre-optic communication lines (FOCLs) based on spectrally efficient signal modulation formats. We have studied the influence of spontaneous emission noise, nonlinear distortions and FOCL length on the data transmission quality. We have compared the characteristics of a received optical signal for soliton and conventional dispersion compensating FOCLs. It is shown that in the presence of strong nonlinearity long-haul soliton FOCLs provide a higher data transmission performance, as well as allow higher order modulation formats to be used as compared to conventional communication lines. In the context of amore » coherent data transmission, soliton FOCLs allow the use of phase modulation with many levels, thereby increasing the spectral efficiency of the communication line. (optical communication lines)« less

Lunar Module Communications

NASA Technical Reports Server (NTRS)

Interbartolo, Michael A.

2009-01-01

This slide presentation reviews the Apollo lunar module communications. It describes several changes in terminology from the Apollo era to more recent terms. It reviews: (1) Lunar Module Antennas and Functions (2). Earth Line of Sight Communications Links (3) No Earth Line of Sight Communications Links (4) Lunar Surface Communications Links (5) Signal-Processing Assembly (6) Instrumentation System (7) Some Communications Problems Encountered

Apparatus and Method for Communication over Power Lines

NASA Technical Reports Server (NTRS)

Krasowski, Michael J. (Inventor); Prokop, Norman F. (Inventor); Greer, III, Lawrence C. (Inventor); Nappier, Jennifer M. (Inventor)

2017-01-01

An apparatus and method are provided for communicating over power lines. The apparatus includes a coupling modem that is situated between a power line and a device. The coupling modem is configured to demodulate a signal received from the power line into a sine signal and a cosine signal. The coupling modem is also configured to modulate a communicated bit stream received from the device into a transmitted signal in order to impose the transmitted signal onto the power line.

Apparatus and Method for Communication over Power Lines

NASA Technical Reports Server (NTRS)

Krasowski, Michael J. (Inventor); Prokop, Norman F. (Inventor); Greer, Lawrence C., III (Inventor); Nappier, Jennifer M. (Inventor)

2015-01-01

An apparatus and method are provided for communicating over power lines. The apparatus includes a coupling modem that is situated between a power line and a device. The coupling modem is configured to demodulate a signal received from the power line into a sine signal and a cosine signal. The coupling modem is also configured to modulate a communicated bit stream received from the device into a transmitted signal in order to impose the transmitted signal onto the power line.

The quality of on-line communication in a national learning programme for newly qualified nurses, midwives and allied health professionals.

PubMed

Lauder, W; Roxburgh, M; Atkinson, John; Banks, Pauline; Kane, Helen

2011-05-01

Asynchronous communication has become the dominant mode of on-line instruction and has been incorporated into Flying Start NHS, an on-line programme for newly qualified NMAHPs in the transition phase from student to registered practitioner. On-line programmes have a number of objectives including the delivery of educational materials and the development of on-line communities. This study sought to provide a direct and objective understanding of the quality of the on-line community within Flying Start NHS and give an indication of areas of strength and weakness. The study used mixed methods including a Gricean analysis of on-line communication focusing on quantity, quality, relevance, and manner, and a thematic analysis of communication content. There was little evidence that students engaged in the type of interactive communication essential for creating on-line learning communities. The majority of postings related to progression through Flying Start. The small number of communications which did begin to engage with the learning materials were limited with little evidence of the development of critical debate. Analysis of the qualitative data indicates that the period of transition continues to be stressful with Flying Start NHS being undertaken concurrently with local CPD being seen as duplication of effort. Copyright © 2010 Elsevier Ltd. All rights reserved.

Mobile Ad Hoc Networks: An Evaluation of Smartphone Technologies

DTIC Science & Technology

2011-10-01

National Defence, 2011 c© Sa Majesté la Reine (en droit du Canada), telle que représentée par le ministre de la Défense nationale, 2011 Abstract A...déploiement de protocoles au cours d’opérations des FC ; 4. le développement d’une implémentation de validation de principe sur un téléphone

All States Guide to Consumer Laws.

DTIC Science & Technology

1986-09-01

3-21 d. Title Companies .. .. .. .. .. .. .. ... .. ... .3-21 e. Escrow Accounts .. .. .. .. .. .. ... .. ... ... 3-21 f. Enf orce men t...from the obligor, the creditor or assignee notifies the obligor of the error and makes appropriate adjust men ts. (3) Good Faith Reliance. There will be...slate law. Impled worrantbers may give you e@~ miors rights. w SYSTEMS COVERED: DIURAflON: 30 )e*kois m ~C~ C SERVK* CONTRI A men ~ct contract be

A Transparently-Scalable Metadata Service for the Ursa Minor Storage System

DTIC Science & Technology

2010-06-25

provide application-level guarantees. For example, many document editing programs imple- ment atomic updates by writing the new document ver- sion into a...Transparently-Scalable Metadata Service for the Ursa Minor Storage System 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 6...operations that could involve multiple servers, how close existing systems come to transparent scala - bility, how systems that handle multi-server

Navy Water Conservation Guide for Shore Activities.

DTIC Science & Technology

1996-07-01

maintaining the data needed, and completing and reviewing the collection ofinformation . Sendcomments regarding this burden estimate orany otherospectof...Submittal Packages E-1 vi LIST OF FIGURES 1-1 Flowchart Showing the Requirements of Executive Order 12902 for Water Conservation 2 1-2 Roles of DOE, GSA...subsequent year. has its own unique role in imple- menting water conservation. In the An audit can be considered Navy, the Naval Facilities Engineer- current

Digital communication system

NASA Technical Reports Server (NTRS)

Monford, L. G., Jr. (Inventor)

1974-01-01

A digital communication system is reported for parallel operation of 16 or more transceiver units with the use of only four interconnecting wires. A remote synchronization circuit produces unit address control words sequentially in data frames of 16 words. Means are provided in each transceiver unit to decode calling signals and to transmit calling and data signals. The transceivers communicate with each other over one data line. The synchronization unit communicates the address control information to the transceiver units over an address line and further provides the timing information over a clock line. A reference voltage level or ground line completes the interconnecting four wire hookup.

Observation of correlation between route to formation, coherence, noise, and communication performance of Kerr combs

NASA Astrophysics Data System (ADS)

Wang, Pei-Hsun; Ferdous, Fahmida; Miao, Houxun; Wang, Jian; Leaird, Daniel E.; Srinivasan, Kartik; Chen, Lei; Aksyuk, Vladimir; Weiner, Andrew M.

2012-12-01

Microresonator optical frequency combs based on cascaded four-wave mixing are potentially attractive as a multi-wavelength source for on-chip optical communications. In this paper we compare time domain coherence, radio-frequency (RF) intensity noise, and individual line optical communications performance for combs generated from two different silicon nitride microresonators. The comb generated by one microresonator forms directly with lines spaced by a single free spectral range (FSR) and exhibits high coherence, low noise, and excellent 10 Gbit/s optical communications results. The comb generated by the second microresonator forms initially with multiple FSR line spacing, with additional lines later filling to reach single FSR spacing. This comb exhibits degraded coherence, increased intensity noise, and severely degraded communications performance. This study is to our knowledge the first to simultaneously investigate and observe a correlation between the route to comb formation, the coherence, noise, and optical communications performance of a Kerr comb.

Options for Accelerating Economic Recovery after Nuclear Attack. Volume 3

DTIC Science & Technology

1979-07-01

speed of data processing. It really ought to be possible to program computers with likely locations of needs, and then locations of ablebodied people...that a number of existing programs and institutions were imple- mented when public concerns over the risk of nuclear war were considerably higher...natural disasters are funded as programs if such programs would also be appropriate to the post-nuclear attack situation. This logic has a compelling

The Intelligibility of Non-Vocoded and Vocoded Semantically Anomalous Sentences.

DTIC Science & Technology

1985-07-26

then vocoded with a real-time channel vocoder (see Gold and Tierney 5 for program description). The Lincoln Digital Signal Processors (LDSPs) - simple...programmable computers of a Harvard architecture - were used to imple- ment the real-time channel vocoder program . Noise was generated within the...ratio at the input was approximately 0 dB. The impor- tant fact to emphasize is that identical vocoding programs were used to generate the Gold and

JPRS Report, Near East & South Asia

DTIC Science & Technology

1990-10-26

in the interest of both Iraq and Kuwait. But he then suddenly changed his position and amazed us with his actions, movements, and reactions which...a tight position . He has confined his consultations to Yemen, the PLO, Tunisia, and Iraq only. He has not imple- mented the Security Council...resolutions or the Arab League resolutions. I, along with the ordinary Arab, wonder why King Husayn has put himself in this tight position , why he has

Reviving a medical wearable computer for teaching purposes.

PubMed

Frenger, Paul

2014-01-01

In 1978 the author constructed a medical wearable computer using an early CMOS microprocessor and support chips. This device was targeted for use by health-conscious consumers and other early adopters. Its expandable functions included weight management, blood pressure control, diabetes care, medication reminders, smoking cessation, pediatric growth and development, simple medical database, digital communication with a doctor’s office and emergency alert system. Various physiological sensors could be plugged-into the calculator-sized chassis. The device was shown to investor groups but funding was not obtained; by 1992 the author ceased pursuing it. The Computing and Mathematics Chair at a local University, a NASA acquaintance, approached the author to mentor a CS capstone course for Summer 2012. With the author’s guidance, five students proceeded to convert this medical wearable computer design to an iPhone-based implementation using the Apple Xcode Developer Kit and other utilities. The final student device contained a body mass index (BMI) calculator, an emergency alert for 911 or other first responders, a medication reminder, a Doctor’s appointment feature, a medical database, medical Internet links, and a pediatric growth & development guide. The students’ final imple-mentation was successfully demonstrated on an actual iPhone 4 at the CS capstone meeting in mid-Summer.

JPRS Report, East Europe, Oblasts: Bulgaria’s New Administrative Units

DTIC Science & Technology

1988-03-29

SPRINGFIELD, VA 22161 DTIC QUALITY INSPECTED 6 4-9 East Europe OBLASTS: Bulgaria’s New Administrative Units JPRS-EER-88-025 CONTENTS 29 MARCH...With Oblast Official [ Rumen Yanev; NARODNA MLADEZH, 27 Sep 87] 4 Comments by Oblast Party Leader [Nikolay Zhishev Interview; RABOTNICHESKO DELO...municipalities that will imple- ment the new content and new functions of self-govern- ment and rule by the people. There are eight oblasts described in eight

A National Security Staff for the 21st Century

DTIC Science & Technology

2012-12-01

President to respond to the Con - gress with a detailed organizational plan for imple- menting the National Security Strategy. vi vii While many of the...the new National Security Staff and was a major con - tributor to key PNSR study efforts, including Forging a New Shield (November 2008), Turning...foundations for a strategic partnership with Con - gress for transforming our national security system to meet the rigors of the 21st century. Part 1 of

Waste to Watts and Water: Enabling Self-Contained Facilities Using Microbial Fuel Cells

DTIC Science & Technology

2008-05-01

suitable growing medium. LOC - Line of communications . Used in a military sense to indicate a main supply route. It includes transportation by ships...fresh water. Self-Contained Facilities - Facilities that do not rely on outside infrastructure or lines of communication for utilities such as water...require in future facilities is the ability to operate cleanly and efficiently apart from the infrastructure network and line of communications (LOCs) both

Security system signal supervision

DOE Office of Scientific and Technical Information (OSTI.GOV)

Chritton, M.R.; Matter, J.C.

1991-09-01

This purpose of this NUREG is to present technical information that should be useful to NRC licensees for understanding and applying line supervision techniques to security communication links. A review of security communication links is followed by detailed discussions of link physical protection and DC/AC static supervision and dynamic supervision techniques. Material is also presented on security for atmospheric transmission and video line supervision. A glossary of security communication line supervision terms is appended. 16 figs.

Programmable data communications controller requirements

NASA Technical Reports Server (NTRS)

1977-01-01

The design requirements for a Programmable Data Communications Controller (PDCC) that reduces the difficulties in attaching data terminal equipment to a computer are presented. The PDCC is an interface between the computer I/O channel and the bit serial communication lines. Each communication line is supported by a communication port that handles all line control functions and performs most terminal control functions. The port is fabricated on a printed circuit board that plugs into a card chassis, mating with a connector that is joined to all other card stations by a data bus. Ports are individually programmable; each includes a microprocessor, a programmable read-only memory for instruction storage, and a random access memory for data storage.

Specification and Verification of Communication Protocols in AFFIRM Using State Transition Models.

DTIC Science & Technology

1981-03-01

NewQueueOfftcket; theorem Pendnglnvariant, Remove(Pending(s)) = NewQueueOfPacket; Since the implementation is in keeping with the specification, its salp ...another communication line. The communication lines are unreliable; messages traveling in either direction can be lost, reordered, corrupted, or

Two-channel spin-chain communication line and simple quantum gates

NASA Astrophysics Data System (ADS)

Stolze, J.; Zenchuk, A. I.

2017-08-01

We consider the remote creation of a mixed state in a one-qubit receiver connected to two two-qubit senders via different channels. Channels are assumed to be chains of spins (qubits) with nearest-neighbor interactions, no external fields are being applied. The problem of sharing the creatable region of the receiver's state-space between two senders is considered for a communication line with the receiver located asymmetrically with respect to these senders (asymmetric communication line). An example of a quantum register realizing simple functions is constructed on the basis of a symmetric communication line. In that setup, the initial states of the two senders serve as input and control signals, respectively, while the state of the receiver at a proper time instant is considered as the output signal.

Nonlinear Waves.

DTIC Science & Technology

1982-09-23

square roots in the above equations correpond to the positive real parts. To obtain the time dependence of the scattering data e make use of (7.2). Hence...2.14), by the time x goes to - o, contains information about q(x) for all real x, and it is apparently difficult to extract the asymptotics at - 0...I LItak(e..eieadVbahnCnrl rwHill. imple the noise level usually A-weighted) at L. r ranek ied.)., t rrd Cmrll. N, w York. I9. of time . In this way

Emergent Rules for Codon Choice Elucidated by Editing Rare Arginine Codons in Escherichia coli

DTIC Science & Technology

2016-09-20

alternative codons are more likely to be viable. To evaluate synonymous and nonsynonymous alternatives to essential AGRs further, we imple- mented a CRISPR ... Crispr -assisted MAGE). First, we designed oligos that changed not only the target AGR codon to NNN but also made several synonymous changes at least 50...nt downstream that would disrupt a 20-bp CRISPR target lo- cus. MAGE was used to replace each AGR with NNN in parallel, and CRISPR /cas9 was used to

Measures of Effectiveness-CONUS Reorganization 1973 (As Pertains to FORSCOM, TRADOC, HSC, OTEA and CAA). Volume 2. Detailed Evaluation Plan and Appendixes A to E

DTIC Science & Technology

1974-11-01

management, organization, and operation of activities designed to achieve the mission/function covered by the measure. An important use of the...presents an evaluation plan designed to assist the Army in the overall assessment of its effectiveness in terms of the goals of the CONUS...ongoing operations plus encourage the design and imple- mentation of any needed changes in the future without excessive delav and turbulence

Computer-Aided Environmental Impact Analysis for Industrial, Procurement, and Research, Development, Test, and Evaluation Activities: User Manual.

DTIC Science & Technology

1978-06-01

Oxygen Demand , Phosphorus , Army activities, or BAAPs (Basic Activities to Imple- and Mercury ; and in Sociology : Population Composi- ment Army Programs...wide) involved? minerals with a proved world reserve (in 1975) of 10 to 15 years are mercury and silver; from 15 to 20years , • What are the energy...antidotes and detox - 128 Forecast. Development of predictions or models ifiers). Design fnethods for interfering with delivery of of present and

Voice Recognition Vocabulary Lists for the Army’s TACFIRE System.

DTIC Science & Technology

1983-01-01

reasons for considering the impl-men-ation of vcice control to TACFIR3. Threshold Tnc. was contarted and the researchers were told that there was nothing...thra section on the lactical Fire Control Function. The next section will establish the v3cabalary for the message associated with thS Non -nuclear Fire...Professor Department of Operations Research E. F. Roland Rolands and Associates Reviewed by: Released by: K. T. Mrshl l, ermn Willia M. Tolles Department of

2005 8th Annual Systems Engineering Conference Volume 3 - Wednesday presentations

DTIC Science & Technology

2005-10-24

phasi s on s ystem s eng ineeri ng Imple menta tion o f SE P lans Requires PEO chief engineer Conduct of technical reviews SE Policy Addendum Signed by...in a Performance Based Logistics Environment, Denise Duncan, LMI Track 5 - Best Practices & Standardization: CMMI for Services, Mr. Juan Ceva...CMMI for Services Mr. Juan Ceva, Raytheon RIS TRACK 5 Logistics Session 3C5 TRACK 4 Net Centric Operations Session 3C4 TRACK 6 Modeling & Simulation

CrossTalk, The Journal of Defense Software Engineering. Volume 26, Number 2. March/April 2013

DTIC Science & Technology

2013-04-01

standards and best practices. “Software and hardware are at risk of being tam - pered with even before they are linked together in an operational system...because of their role in national and global security and the variety of valuable lessons learned and best practices they can provide because they are...Management. GAO said DoD’s efforts to implement SCRM can be a learning tool for others in the Federal government. DoD is currently imple- CrossTalk

Radio frequency communication system utilizing radiating transmission lines

DOEpatents

Struven, Warren C.

1984-01-01

A radio communication system for use in tunnels, mines, buildings or other shielded locations in which a pair of radiating transmission lines (30), (31) extend through such location in spaced coextensive relation to each other. Each transmission line (30), (31) has at least one unidirectional amplifier (32), (33) interposed therein with the sense of the unidirectional amplifier (32) of one transmission line (30) being opposite to the sense of the unidirectional amplifier (33) of the other transmission line (31). Each of the amplifiers (32), (33) has a gain which is less than the coupling loss between the transmission lines (30), (31). Two or more mobile transceivers (35) in the location served by the system are coupled to the transmission lines (30), (31) by electromagnetic wave propagation in space in order to communicate directly with each other at a given radio frequency within the frequency range of the system.

Factors influencing intentions to stay and retention of nurse managers: a systematic review.

PubMed

Brown, Pamela; Fraser, Kimberly; Wong, Carol A; Muise, Melanie; Cummings, Greta

2013-04-01

This systematic review aimed to explore factors known to influence intentions to stay and retention of nurse managers in their current position. Retaining staff nurses and recruiting nurses to management positions are well documented; however, there is sparse research examining factors that influence retention of nurse managers. Thirteen studies were identified through a systematic search of the literature. Eligibility criteria included both qualitative and quantitative studies that examined factors related to nurse manager intentions to stay and retention. Quality assessments, data extraction and analysis were completed on all studies included. Twenty-one factors were categorized into three major categories: organizational, role and personal. Job satisfaction, organizational commitment, organizational culture and values, feelings of being valued and lack of time to complete tasks leading to work/life imbalance, were prominent across all categories. These findings suggest that intentions to stay and retention of nurse managers are multifactoral. However, lack of robust literature highlights the need for further research to develop strategies to retain nurse managers. ImplICATIONS FOR NURSE MANAGEMENT: Health-care organizations and senior decision-makers should feel a responsibility to support front-line managers in relation to workload and span of control, and in understanding work/life balance issues faced by managers. © 2012 Blackwell Publishing Ltd.

The Crisis "Hotline" as Mediated Therapeutic Communication.

ERIC Educational Resources Information Center

Fish, Sandra L.

Hotlines, or telephone crisis-lines, begun in the 1960s and currently numbering in the hundreds provide assistance to callers in crisis, frequently around the clock. Crisis-line communication can be seen as a form of mediated therapeutic communication premised on the existence of a crisis and the medium of the telephone which shapes the…

Women On-Line: Cultural and Relational Aspects of Women's Communication in On-line Discussion Groups.

ERIC Educational Resources Information Center

Ferris, Sharmila Pixy

1996-01-01

Women's online communication often mirrors that of face-to-face communication, linguistically and relationally. Women-only online communities, however, provide an opportunity to develop a distinct relational and cultural style. Discusses gender differences in face-to-face language use, and in mixed gender online discussion groups. Describes…

Roadmap for Testing and Validation of Electric Vehicle Communication Standards

DOE Office of Scientific and Technical Information (OSTI.GOV)

Pratt, Richard M.; Tuffner, Francis K.; Gowri, Krishnan

Vehicle to grid communication standards are critical to the charge management and interoperability among plug-in electric vehicles (PEVs), charging stations and utility providers. The Society of Automobile Engineers (SAE), International Organization for Standardization (ISO), International Electrotechnical Commission (IEC) and the ZigBee Alliance are developing requirements for communication messages and protocols. While interoperability standards development has been in progress for more than two years, no definitive guidelines are available for the automobile manufacturers, charging station manufacturers or utility backhaul network systems. At present, there is a wide range of proprietary communication options developed and supported in the industry. Recent work bymore » the Electric Power Research Institute (EPRI), in collaboration with SAE and automobile manufacturers, has identified performance requirements and developed a test plan based on possible communication pathways using power line communication (PLC). Though the communication pathways and power line communication technology options are identified, much work needs to be done in developing application software and testing of communication modules before these can be deployed in production vehicles. This paper presents a roadmap and results from testing power line communication modules developed to meet the requirements of SAE J2847/1 standard.« less

Strategies for a Creative Future with Computer Science, Quality Design and Communicability

NASA Astrophysics Data System (ADS)

Cipolla Ficarra, Francisco V.; Villarreal, Maria

In the current work is presented the importance of the two-way triad between computer science, design and communicability. It is demonstrated how the principles of quality of software engineering are not universal since they are disappearing inside university training. Besides, a short analysis of the term "creativity" males apparent the existence of plagiarism as a human factor that damages the future of communicability applied to the on-line and off-line contents of the open software. A set of measures and guidelines are presented so that the triad works again correctly in the next years to foster the qualitative design of the interactive systems on-line and/or off-line.

Statistical simulation of information transfer through non-line-of-sight atmospheric optical communication channels

NASA Astrophysics Data System (ADS)

Tarasenkov, M. V.; Belov, V. V.; Poznakharev, E. S.

2017-11-01

Impulse response of non-line-of-sight atmospheric communication channels at wavelengths of 0.3, 0.5, and 0.9 μm are compared for the case in which the optical axes of the receiver and laser radiation lie in the plane perpendicular to the Earth's surface. The most efficient communication channel depending on the base distance is determined. For a wavelength of 0.5 μm and a concrete variant of the transceiving part of the communication system, the limiting communication range and the limiting repetition frequency of pulses that can be transmitted through the communication channel are estimated.

Communications for UAS Integration in the NAS Phase 2 Satellite Communications and Terrestrial Extension

NASA Technical Reports Server (NTRS)

Griner, Jim; Kerczewski, Bob

2017-01-01

In order to provide for the safe integration of unmanned aircraft systems (UAS) into the National Airspace System, the command and control communications link connecting the ground-based pilot with the unmanned aircraft must be highly reliable and robust, with national and international standards to enable interoperability and certification. Both line-of-sight (LOS) links using terrestrial-based communications and beyond-line-of-sight (BLOS) links using satellite communications, supported by national and international standards, are required for integrated UAS operations. The National Aeronautics and Space Administration (NASA) has undertaken an extensive technology development and test program in order to provide the required technical data needed to enable C2 standards development. NASAs UAS Integration in the National Airspace System (NAS), or UAS in the NAS Project, included as a major element the Command and Control Communications (C2) Subproject, based at NASAs Glenn Research Center. The successful first phase of the C2 Subproject, completed during 2012-2016, focused primarily on line-of-sight communications. Accomplishments included air-ground channel propagation characterization and modeling; CNPC prototype radio development; CNPC radio flight testing; satellite communications spectrum study and interference analysis; and development of C2 LOS communications standards development. The second phase of the C2 Subproject will focus primarily on beyond-line-of-sight communications, although a follow-on activity for terrestrial LOS communications, known as Terrestrial Extension, is also included. In addition to the terrestrial element, Phase 2 also includes technology development and testing activities for Ka-Band BLOS C2 Satellite Communications; Ku-Band BLOS C2 Satellite Communications; Ku-Band Interference and Propagation; and C-Band Satellite Communications. This paper will provide brief overviews of the C2 Subproject and its Phase I accomplishments, followed by a description of the plans for the C2 Subproject Phase 2.

Communications for UAS Integration in the NAS Phase 2 - Satellite Communications and Terrestrial Extension

NASA Technical Reports Server (NTRS)

Griner, James H.; Kerczewski, Robert J.

2017-01-01

In order to provide for the safe integration of unmanned aircraft systems (UAS) into the National Airspace System, the command and control communications link connecting the ground-based pilot with the unmanned aircraft must be highly reliable and robust, with national and international standards to enable interoperability and certification. Both line-of-sight (LOS) links using terrestrial-based communications and beyond-line-of-sight (BLOS) links using satellite communications, supported by national and international standards, are required for integrated UAS operations. The National Aeronautics and Space Administration (NASA) has undertaken an extensive technology development and test program in order to provide the required technical data needed to enable C2 standards development. NASAs UAS Integration in the National Airspace System (NAS), or UAS in the NAS Project, included as a major element the Command and Control Communications (C2) Subproject, based at NASAs Glenn Research Center. The successful first phase of the C2 Subproject, completed during 2012-2016, focused primarily on line-of-sight communications. Accomplishments included air-ground channel propagation characterization and modeling; CNPC prototype radio development; CNPC radio flight testing; satellite communications spectrum study and interference analysis; and development of C2 LOS communications standards development. The second phase of the C2 Subproject will focus primarily on beyond-line-of-sight communications, although a follow-on activity for terrestrial LOS communications, known as Terrestrial Extension, is also included. In addition to the terrestrial element, Phase 2 also includes technology development and testing activities for Ka-Band BLOS C2 Satellite Communications; Ku-Band BLOS C2 Satellite Communications; Ku-Band Interference and Propagation; and C-Band Satellite Communications. This paper will provide brief overviews of the C2 Subproject and its Phase I accomplishments, followed by a description of the plans for the C2 Subproject Phase 2.

Synchronization and bidirectional communication without delay line using strong mutually coupled semiconductor lasers

NASA Astrophysics Data System (ADS)

Li, Guang-Hui; Wang, An-Bang; Feng, Ye; Wang, Yang

2010-07-01

This paper numerically demonstrates synchronization and bidirectional communication without delay line by using two semiconductor lasers with strong mutual injection in a face-to-face configuration. These results show that both of the two lasers' outputs synchronize with their input chaotic carriers. In addition, simulations demonstrate that this kind of synchronization can be used to realize bidirectional communications without delay line. Further studies indicate that within a small deviation in message amplitudes of two sides (±6%), the message can be extracted with signal-noise-ratio more than 10 dB; and the signal-noise-ratio is extremely sensitive to the message rates mismatch of two sides, which may be used as a key of bidirectional communication.

Examining the structural challenges to communication as experienced by nurse managers in two US hospital settings.

PubMed

Marx, Marcia

2014-11-01

This study examined the structural barriers to communication for first-line nurse managers with their staff nurses. The delivery of quality care depends on effective communication in hospital units. First-line nurse managers are central figures in networks whose responsibility is to communicate information from the senior management to staff nurses. The data were collected using face-to-face interviews with first-line managers at two US hospitals The interviews were transcribed and coded with limited use of the qualitative software atlas Interview questions focused on work experiences of managers with special emphases on communication. Structural barriers that influenced managers' communication included the amount of face-to-face interaction with nurses, the amount of information to communicate, levels of formalization, outreach to all nurses, time constraints and nurses' subcultural networks These factors compromised managers' ability to communicate effectively with nurses. Managers should carefully examine how structure affects communication recognizing that some dynamics of structure cannot be changed but that they can influence others, such as formalization and communication networks. Managers should examine their own positioning within nurses' networks and demonstrate to nurses that their expertise contributes to the collaborative capital upon which nursing practice depends. © 2013 John Wiley & Sons Ltd.

Electric Vehicle Communication Standards Testing and Validation Phase I: SAE J2847/1

DOE Office of Scientific and Technical Information (OSTI.GOV)

Pratt, Richard M.; Tuffner, Francis K.; Gowri, Krishnan

Executive Summary Vehicle to grid communication standards are critical to the charge management and interoperability among vehicles, charging stations and utility providers. Several standards initiatives by the Society of Automobile Engineers (SAE), International Standards Organization and International Electrotechnical Commission (ISO/IEC), and ZigBee / HomePlug Alliance are developing requirements for communication messages and protocols. While the standard development is in progress for more than two years, no definitive guidelines are available for the automobile manufacturers, charging station manufacturers and utility backhaul network systems. At present, there is a wide range of proprietary communication options developed and supported in the industry. Recentmore » work by the Electric Power Research Institute (EPRI) in collaboration with SAE and automobile manufacturers has identified performance requirements and test plan based on possible communication pathways using power line communication over the control pilot and mains. Though the communication pathways and power line communication technology options are identified, much work needs to be done in developing application software and testing of communication modules before these can be deployed in production vehicles. This report presents a test plan and results from initial testing of two power line communication modules developed to meet the requirements of SAE J2847/1 standard.« less

Military Forces in Urban Antiterrorism

DTIC Science & Technology

1989-10-01

not constitule an official eodorýemtnt oi apprcvai of the use of’ s3ch commercial products. UNCLASSIFIED ýEUAITY CLAS .’A71ON; 01 - ~’PAGE J FIorm...Continue on reverse if necessary and identify by block number) ýIFLD GROUP SU1R- AU P urban wlrfare; MOUT, 15 6 ____ ,.rban terrorism LIC J terrorism (see...onclusions and address-ez their impl ic~ati ons for U.S. military forces in future urban aril itrror int operat2.on:?.k 20DiSTRiBUITION /AVAILABILTY OF j .,85

Advanced training of specialists in area of fiber-optic communication lines maintenance

NASA Astrophysics Data System (ADS)

Andreev, Vladimir A.; Voronkov, Andrey A.; Bukashkin, Sergey A.; Buzova, Maria A.

2017-04-01

The paper considers the concept of fiber-optic communication lines (FOCL) maintenance. Performance criterion of FOCL technical maintenance was proposed. For the first time the algorithm for evaluation of the FOCL maintenance efficiency at telecommunication specialists training was applied.

Cell line specific modulation of connexin43 expression after exposure to ionizing radiation.

PubMed

Banaz-Yaşar, Ferya; Tischka, Rabea; Iliakis, George; Winterhager, Elke; Gellhaus, Alexandra

2005-01-01

Gap junctional intercellular communication plays a significant role in mediating radiation-induced bystander effects. However, the level of Cx43 itself is influenced by ionizing radiation, which could modify the bystander effect. Here we have investigated several cell lines for the modulation of Cx43 expression 24 h after irradiation with 5 Gy X-rays. The mouse endothelial cell line bEnd3 revealed a significantly elevated level of Cx43 already 15 min after exposure to X-rays, whereas human hybrid endothelial cells (EA.hy926) exhibited a transient downregulation of Cx43 mRNA. No obvious changes in the communication properties of the different cell lines could be observed after irradiation. The communication-deficient malignant human trophoblast cell line Jeg3 stably transfected with Cx43 did not reveal any induction of endogenous nor alteration in the exogenous Cx43 transcript level upon exposure to 5 Gy. Taken together, our data show a cell line specific modulation of Cx43 expression after exposure to X-rays.

Bird strike and electrocutions at power lines, communication towers, and wind turbines: state of the art and state of the science - next steps toward mitigation

Treesearch

Albert M. Manville II

2005-01-01

Migratory birds suffer considerable human-caused mortality from structures built to provide public services and amenities. Three such entities are increasing nationwide: communication towers, power lines, and wind turbines. Communication towers have been growing at an exponential rate over at least the past 6 years. The U.S. Fish and Wildlife Service is especially...

Analysis of Controller Communication in En Route Air Traffic Control.

ERIC Educational Resources Information Center

Seamster, Thomas L.; And Others

To contribute to an understanding of the elements of good air traffic controller communication with the objective of providing recommendations to improve controller communication training, two studies analyzed team communication, ground-air communication, and ground-line communication. The simulated and live traffic analyses examined established…

33 CFR 222.3 - Clearances for power and communication lines over reservoirs.

Code of Federal Regulations, 2012 CFR

2012-07-01

... communication lines over reservoirs. 222.3 Section 222.3 Navigation and Navigable Waters CORPS OF ENGINEERS... Works responsibilities. (c) References. (1) ER 1180-1-1 (Section 73). (2) National Electrical Safety... including temperature, loading and length of spans as outlined in the National Electrical Safety Code. (3...

33 CFR 222.3 - Clearances for power and communication lines over reservoirs.

Code of Federal Regulations, 2014 CFR

2014-07-01

... communication lines over reservoirs. 222.3 Section 222.3 Navigation and Navigable Waters CORPS OF ENGINEERS... Works responsibilities. (c) References. (1) ER 1180-1-1 (Section 73). (2) National Electrical Safety... including temperature, loading and length of spans as outlined in the National Electrical Safety Code. (3...

33 CFR 222.3 - Clearances for power and communication lines over reservoirs.

Code of Federal Regulations, 2013 CFR

2013-07-01

... communication lines over reservoirs. 222.3 Section 222.3 Navigation and Navigable Waters CORPS OF ENGINEERS... Works responsibilities. (c) References. (1) ER 1180-1-1 (Section 73). (2) National Electrical Safety... including temperature, loading and length of spans as outlined in the National Electrical Safety Code. (3...

Geometric Modeling of Construction Communications with Specified Dynamic Properties

NASA Astrophysics Data System (ADS)

Korotkiy, V. A.; Usmanova, E. A.; Khmarova, L. I.

2017-11-01

Among many construction communications the pipelines designed for the organized supply or removal of liquid or loose working bodies are distinguished for their functional purpose. Such communications should have dynamic properties which allow one to reduce losses on friction and vortex formation. From the point of view of geometric modeling, the given dynamic properties of the projected communication mean the required degree of smoothness of its center line. To model the axial line (flat or spatial), it is proposed to use composite curve lines consisting of the curve arcs of the second order or from their quadratic images. The advantage of the proposed method is that the designer gets the model of a given curve not as a set of coordinates of its points but in the form of a matrix of coefficients of the canonical equations for each arc.

Trend on High-speed Power Line Communication Technology

NASA Astrophysics Data System (ADS)

Ogawa, Osamu

High-speed power line communication (PLC) is useful technology to easily build the communication networks, because construction of new infrastructure is not necessary. In Europe and America, PLC has been used for broadband networks since the beginning of 21th century. In Japan, high-speed PLC was deregulated only indoor usage in 2006. Afterward it has been widely used for home area network, LAN in hotels and school buildings and so on. And recently, PLC is greatly concerned as communication technology for smart grid network. In this paper, the author surveys the high-speed PLC technology and its current status.

7 CFR 1726.176 - Communications and control facilities.

Code of Federal Regulations, 2012 CFR

2012-01-01

... line carrier communications systems, load control, and supervisory control and data acquisition (SCADA...) Load control systems, communications systems, and SCADA systems—(1) Contract forms. The borrower must...

7 CFR 1726.176 - Communications and control facilities.

Code of Federal Regulations, 2014 CFR

2014-01-01

... line carrier communications systems, load control, and supervisory control and data acquisition (SCADA...) Load control systems, communications systems, and SCADA systems—(1) Contract forms. The borrower must...

7 CFR 1726.176 - Communications and control facilities.

Code of Federal Regulations, 2011 CFR

2011-01-01

... line carrier communications systems, load control, and supervisory control and data acquisition (SCADA...) Load control systems, communications systems, and SCADA systems—(1) Contract forms. The borrower must...

7 CFR 1726.176 - Communications and control facilities.

Code of Federal Regulations, 2013 CFR

2013-01-01

... line carrier communications systems, load control, and supervisory control and data acquisition (SCADA...) Load control systems, communications systems, and SCADA systems—(1) Contract forms. The borrower must...

76 FR 30714 - Information Collection Being Reviewed by the Federal Communications Commission

Federal Register 2010, 2011, 2012, 2013, 2014

2011-05-26

... transmission line. Acquisitions involving interstate common carriers require affirmative action by the... FEDERAL COMMUNICATIONS COMMISSION Information Collection Being Reviewed by the Federal Communications Commission AGENCY: Federal Communications Commission. ACTION: Notice and request for comments...

An Automatic Networking and Routing Algorithm for Mesh Network in PLC System

NASA Astrophysics Data System (ADS)

Liu, Xiaosheng; Liu, Hao; Liu, Jiasheng; Xu, Dianguo

2017-05-01

Power line communication (PLC) is considered to be one of the best communication technologies in smart grid. However, the topology of low voltage distribution network is complex, meanwhile power line channel has characteristics of time varying and attenuation, which lead to the unreliability of power line communication. In this paper, an automatic networking and routing algorithm is introduced which can be adapted to the "blind state" topology. The results of simulation and test show that the scheme is feasible, the routing overhead is small, and the load balance performance is good, which can achieve the establishment and maintenance of network quickly and effectively. The scheme is of great significance to improve the reliability of PLC.

Brief communication: coaxial lines for multiphase power distribution.

PubMed

Barnes, F S; Harwick, P; Banerjee, A

1996-01-01

A coaxial cable can be used to reduce the magnetic and electric fields that extend into environments in the vicinity of transmission lines and distribution lines and in-house or building wiring for power distribution systems. The use of the coaxial geometry may prove useful in cases where there are environmental concerns with respect to health effects and in cases where there is a need to run high-speed data communications in close proximity to power distribution systems.

Air Supply Operations in the China-Burma-India Theater between 1942 and 1945

DTIC Science & Technology

2010-12-10

Burma Theater ICD India China Division ICW India China Wing KMT Nationalist Chinese Party LOC Line of Communication MSR Main Supply Route ix NCAC...Theater in order to keep China in the war against Japan. Historians such as Wesley Craven, Charles Romanus, and Leo Daugherty have addressed the...the Japanese severed the line of communication ( LOC ) that supplied China and its small air force. Without that critical supply line, Lieutenant General

Dependence of the bit error rate on the signal power and length of a single-channel coherent single-span communication line (100 Gbit s{sup -1}) with polarisation division multiplexing

DOE Office of Scientific and Technical Information (OSTI.GOV)

Gurkin, N V; Konyshev, V A; Novikov, A G

2015-01-31

We have studied experimentally and using numerical simulations and a phenomenological analytical model the dependences of the bit error rate (BER) on the signal power and length of a coherent single-span communication line with transponders employing polarisation division multiplexing and four-level phase modulation (100 Gbit s{sup -1} DP-QPSK format). In comparing the data of the experiment, numerical simulations and theoretical analysis, we have found two optimal powers: the power at which the BER is minimal and the power at which the fade margin in the line is maximal. We have derived and analysed the dependences of the BER on themore » optical signal power at the fibre line input and the dependence of the admissible input signal power range for implementation of the communication lines with a length from 30 – 50 km up to a maximum length of 250 km. (optical transmission of information)« less

Simple techniques for improving deep neural network outcomes on commodity hardware

NASA Astrophysics Data System (ADS)

Colina, Nicholas Christopher A.; Perez, Carlos E.; Paraan, Francis N. C.

2017-08-01

We benchmark improvements in the performance of deep neural networks (DNN) on the MNIST data test upon imple-menting two simple modifications to the algorithm that have little overhead computational cost. First is GPU parallelization on a commodity graphics card, and second is initializing the DNN with random orthogonal weight matrices prior to optimization. Eigenspectra analysis of the weight matrices reveal that the initially orthogonal matrices remain nearly orthogonal after training. The probability distributions from which these orthogonal matrices are drawn are also shown to significantly affect the performance of these deep neural networks.

18 CFR 12.43 - Power and communication lines and gas pipelines.

Code of Federal Regulations, 2013 CFR

2013-04-01

... reasonable specifications that may be provided by the Regional Engineer, to ensure that any power or... waters must be at least sufficient to conform to any applicable requirements of the National Electrical... Engineer may require a licensee or applicant to provide signs at or near power or communication lines to...

18 CFR 12.43 - Power and communication lines and gas pipelines.

Code of Federal Regulations, 2012 CFR

2012-04-01

... reasonable specifications that may be provided by the Regional Engineer, to ensure that any power or... waters must be at least sufficient to conform to any applicable requirements of the National Electrical... Engineer may require a licensee or applicant to provide signs at or near power or communication lines to...

18 CFR 12.43 - Power and communication lines and gas pipelines.

Code of Federal Regulations, 2014 CFR

2014-04-01

... reasonable specifications that may be provided by the Regional Engineer, to ensure that any power or... waters must be at least sufficient to conform to any applicable requirements of the National Electrical... Engineer may require a licensee or applicant to provide signs at or near power or communication lines to...

18 CFR 12.43 - Power and communication lines and gas pipelines.

Code of Federal Regulations, 2011 CFR

2011-04-01

... reasonable specifications that may be provided by the Regional Engineer, to ensure that any power or... waters must be at least sufficient to conform to any applicable requirements of the National Electrical... Engineer may require a licensee or applicant to provide signs at or near power or communication lines to...

18 CFR 12.43 - Power and communication lines and gas pipelines.

Code of Federal Regulations, 2010 CFR

2010-04-01

... reasonable specifications that may be provided by the Regional Engineer, to ensure that any power or... waters must be at least sufficient to conform to any applicable requirements of the National Electrical... Engineer may require a licensee or applicant to provide signs at or near power or communication lines to...

Bridging Operational and Strategic Communication Architectures: Integrating Small Unmanned Aircraft Systems as Airborne Tactical Relay Communication Vertical Nodes

DTIC Science & Technology

2012-09-01

Surveillance Reconnaissance JUAS Joint Unmanned Aircraft System LAN Local Area Network LOS Line of Sight xiv MANET Mobile Ad Hoc Network...terrain, which severely impacted the ability to communicate with the line of sight ( LOS ) tactical radios used by small units. Much like the commercial...Selectable – NB: 10W, SATCOM: 20W, WB: 20W peak/5W average Operational Mode: Voice/Data (to 3.6Mbps) Distance: 300 meters to 35 Kilometers or LOS

Piezoelectric Vibrational and Acoustic Alert for a Personal Communication Device

NASA Technical Reports Server (NTRS)

Woodard, Stanley E. (Inventor); Hellbaum, Richard F. (Inventor); Daugherty, Robert H. (Inventor); Scholz, Raymond C. (Inventor); Little, Bruce D. (Inventor); Fox, Robert L. (Inventor); Denhardt, Gerald A. (Inventor); Jang, SeGon (Inventor); Balein, Rizza (Inventor)

2001-01-01

An alert apparatus for a personal communication device includes a mechanically prestressed piezoelectric wafer positioned within the personal communication device and an alternating voltage input line coupled at two points of the wafer where polarity is recognized. The alert apparatus also includes a variable frequency device coupled to the alternating voltage input line, operative to switch the alternating voltage on the alternating voltage input line at least between an alternating voltage having a first frequency and an alternating voltage having a second frequency. The first frequency is preferably sufficiently high so as to cause the wafer to vibrate at a resulting frequency that produces a sound perceptible by a human ear, and the second frequency is preferably sufficiently low so as to cause the wafer to vibrate at a resulting frequency that produces a vibration readily felt by a holder of the personal communication device.

Research and Development on Ultra-Lightweight Low-Loss Optical Fiber Communication Cable.

DTIC Science & Technology

FIBER OPTICS TRANSMISSION LINES, LIGHTWEIGHT), GLASS , FIBERS , ORGANIC COATINGS, POLYURETHANE RESINS, SOLUTIONS(GENERAL), POWDERS, ELECTROSTATICS...EXTRUSION, RUGGEDIZED EQUIPMENT, BROADBAND, OPTICAL COMMUNICATIONS, TACTICAL COMMUNICATIONS, FIBER OPTICS, LOSSES.

The use of tracheostomy speaking valves in mechanically ventilated patients results in improved communication and does not prolong ventilation time in cardiothoracic intensive care unit patients.

PubMed

Sutt, Anna-Liisa; Cornwell, Petrea; Mullany, Daniel; Kinneally, Toni; Fraser, John F

2015-06-01

The aim of this study was to assess the effect of the introduction of in-line tracheostomy speaking valves (SVs) on duration of mechanical ventilation and time to verbal communication in patients requiring tracheostomy for prolonged mechanical ventilation in a predominantly cardiothoracic intensive care unit (ICU). We performed a retrospective preobservational-postobservational study using data from the ICU clinical information system and medical record. Extracted data included demographics, diagnoses and disease severity, mechanical ventilation requirements, and details on verbal communication and oral intake. Data were collected on 129 patients. Mean age was 59 ± 16 years, with 75% male. Demographics, case mix, and median time from intubation to tracheostomy (6 days preimplementation-postimplementation) were unchanged between timepoints. A significant decrease in time from tracheostomy to establishing verbal communication was observed (18 days preimplementation and 9 days postimplementation, P <.05). There was no difference in length of mechanical ventilation (20 days preimplementation-post) or time to decannulation (14 days preimplementation-postimplementation). No adverse events were documented in relation to the introduction of in-line SVs. In-line SVs were successfully implemented in mechanically ventilated tracheostomized patient population. This resulted in earlier verbal communication, no detrimental effect on ventilator weaning times, and no change in decannulation times. The purpose of the study was to compare tracheostomy outcomes in mechanically ventilated patients in a cardiothoracic ICU preintroduction and postintroduction of in-line SVs. It was hypothesized that in-line SVs would improve communication and swallowing specific outcomes with no increase in average time to decannulation or the number of adverse events. Copyright © 2015 Elsevier Inc. All rights reserved.

Concurrent hypercube system with improved message passing

NASA Technical Reports Server (NTRS)

Peterson, John C. (Inventor); Tuazon, Jesus O. (Inventor); Lieberman, Don (Inventor); Pniel, Moshe (Inventor)

1989-01-01

A network of microprocessors, or nodes, are interconnected in an n-dimensional cube having bidirectional communication links along the edges of the n-dimensional cube. Each node's processor network includes an I/O subprocessor dedicated to controlling communication of message packets along a bidirectional communication link with each end thereof terminating at an I/O controlled transceiver. Transmit data lines are directly connected from a local FIFO through each node's communication link transceiver. Status and control signals from the neighboring nodes are delivered over supervisory lines to inform the local node that the neighbor node's FIFO is empty and the bidirectional link between the two nodes is idle for data communication. A clocking line between neighbors, clocks a message into an empty FIFO at a neighbor's node and vica versa. Either neighbor may acquire control over the bidirectional communication link at any time, and thus each node has circuitry for checking whether or not the communication link is busy or idle, and whether or not the receive FIFO is empty. Likewise, each node can empty its own FIFO and in turn deliver a status signal to a neighboring node indicating that the local FIFO is empty. The system includes features of automatic message rerouting, block message transfer and automatic parity checking and generation.

Constraints on communication in classrooms for the deaf.

PubMed

Matthews, T J; Reich, C F

1993-03-01

One explanation for the relatively low scholastic achievement of deaf students is the character of communication in the classroom. Unlike aural communication methods, line-of-sight methods share the limitation that the receiver of the message must look at the sender. To assess the magnitude of this constraint, we measured the amount of time signers were looked at by potential receivers in typical secondary school classes for the deaf. Videotaped segments indicated that on average the messages sent by teachers and students were seen less than half the time. Students frequently engaged in collateral conversations. The constraints of line-of-sight communication are profound and should be addressed by teaching techniques, classroom layout, and possibly, the use of computer-communication technology.

“…still waiting for chloroquine”: the challenge of communicating changes in first-line treatment policy for uncomplicated malaria in a remote Kenyan district

PubMed Central

2014-01-01

Background Widespread parasite resistance to first-line treatment for uncomplicated malaria leads to introduction of new drug interventions. Introducing such interventions is complex and sensitive because of stakeholder interests and public resistance. To enhance take up of such interventions, health policy communication strategies need to deliver accurate and accessible information to empower communities with necessary information and address problems of cultural acceptance of new interventions. Objectives To explore community understanding of policy changes in first-line treatment for uncomplicated malaria in Kenya; to evaluate the potential role of policy communication in influencing responses to changes in first-line treatment policy. Methods Data collection involved qualitative strategies in a remote district in the Kenyan Coast: in-depth interviews (n = 29), focus group discussions (n = 14), informal conversations (n = 11) and patient narratives (n = 8). Constant comparative method was used in the analysis. Being malaria-prone and remotely located, the district offered an ideal area to investigate whether or not and how policy communication about a matter as critical as change of treatment policy reaches vulnerable populations. Results Three years after initial implementation (2009), there was limited knowledge or understanding regarding change of first-line treatment from sulphadoxine-pyrimethamine (SP) to artemether-lumefantrine (AL) for treatment of uncomplicated malaria in the study district. The print and electronic media used to create awareness about the drug change appeared to have had little impact. Although respondents were aware of the existence of AL, the drug was known neither by name nor as the official first-line treatment. Depending on individuals or groups, AL was largely viewed negatively. The weaknesses in communication strategy surrounding the change to AL included poor choice of communication tools, confusing advertisements of other drugs and conflicts between patients and providers. Conclusion Effective health policy communication is important for the uptake of new drug interventions and adherence to treatment regimens. Besides, prompt access to effective treatment may not be achieved if beneficiaries are not adequately informed about treatment policy changes. Future changes in treatment policy should ensure that the communication strategy is designed to pass sustained, accurate and effective messages that account for local contexts. PMID:25005337

"…still waiting for chloroquine": the challenge of communicating changes in first-line treatment policy for uncomplicated malaria in a remote Kenyan district.

PubMed

Okungu, Vincent; Gilson, Lucy

2014-07-08

Widespread parasite resistance to first-line treatment for uncomplicated malaria leads to introduction of new drug interventions. Introducing such interventions is complex and sensitive because of stakeholder interests and public resistance. To enhance take up of such interventions, health policy communication strategies need to deliver accurate and accessible information to empower communities with necessary information and address problems of cultural acceptance of new interventions. To explore community understanding of policy changes in first-line treatment for uncomplicated malaria in Kenya; to evaluate the potential role of policy communication in influencing responses to changes in first-line treatment policy. Data collection involved qualitative strategies in a remote district in the Kenyan Coast: in-depth interviews (n = 29), focus group discussions (n = 14), informal conversations (n = 11) and patient narratives (n = 8). Constant comparative method was used in the analysis. Being malaria-prone and remotely located, the district offered an ideal area to investigate whether or not and how policy communication about a matter as critical as change of treatment policy reaches vulnerable populations. Three years after initial implementation (2009), there was limited knowledge or understanding regarding change of first-line treatment from sulphadoxine-pyrimethamine (SP) to artemether-lumefantrine (AL) for treatment of uncomplicated malaria in the study district. The print and electronic media used to create awareness about the drug change appeared to have had little impact. Although respondents were aware of the existence of AL, the drug was known neither by name nor as the official first-line treatment. Depending on individuals or groups, AL was largely viewed negatively. The weaknesses in communication strategy surrounding the change to AL included poor choice of communication tools, confusing advertisements of other drugs and conflicts between patients and providers. Effective health policy communication is important for the uptake of new drug interventions and adherence to treatment regimens. Besides, prompt access to effective treatment may not be achieved if beneficiaries are not adequately informed about treatment policy changes. Future changes in treatment policy should ensure that the communication strategy is designed to pass sustained, accurate and effective messages that account for local contexts.

26 CFR 49.4253-10 - Exemption for certain private communications services.

Code of Federal Regulations, 2011 CFR

2011-04-01

... conducted with no purpose of gain or profit. A line or channel is considered to be furnished between... functions performed by a communications company exchange. Where an amount is paid which includes a charge for such a line or channel and also a charge for the service provided by means of switching functions...

26 CFR 49.4253-10 - Exemption for certain private communications services.

Code of Federal Regulations, 2012 CFR

2012-04-01

... conducted with no purpose of gain or profit. A line or channel is considered to be furnished between... functions performed by a communications company exchange. Where an amount is paid which includes a charge for such a line or channel and also a charge for the service provided by means of switching functions...

26 CFR 49.4253-10 - Exemption for certain private communications services.

Code of Federal Regulations, 2010 CFR

2010-04-01

... conducted with no purpose of gain or profit. A line or channel is considered to be furnished between... functions performed by a communications company exchange. Where an amount is paid which includes a charge for such a line or channel and also a charge for the service provided by means of switching functions...

26 CFR 49.4253-10 - Exemption for certain private communications services.

Code of Federal Regulations, 2013 CFR

2013-04-01

... conducted with no purpose of gain or profit. A line or channel is considered to be furnished between... functions performed by a communications company exchange. Where an amount is paid which includes a charge for such a line or channel and also a charge for the service provided by means of switching functions...

Joint Interdiction

DTIC Science & Technology

2016-09-09

law enforcement detachment (USCG) LEO law enforcement operations LOC line of communications MACCS Marine air command and control system MAS...enemy command and control [C2], intelligence, fires, reinforcing units, lines of communications [ LOCs ], logistics, and other operational- and tactical...enemy naval, engineering, and personnel resources to the tasks of repairing and recovering damaged equipment, facilities, and LOCs . It can draw the

PORTION OF A LINE (AT LEFT) AND B LINE (AT ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

PORTION OF A LINE (AT LEFT) AND B LINE (AT RIGHT) ON GENTLE TERRACE SLOPE. A LINE POLE 75A (LEFT FOREGROUND) HAS ORIGINAL GLASS PIN-TYPE INSULATORS AND INTACT COMMUNICATION LINE CROSS ARM. VIEW TO WEST-SOUTHWEST. - Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Along West Rosebud Creek, Fishtail, Stillwater County, MT

Practical low-cost visual communication using binary images for deaf sign language.

PubMed

Manoranjan, M D; Robinson, J A

2000-03-01

Deaf sign language transmitted by video requires a temporal resolution of 8 to 10 frames/s for effective communication. Conventional videoconferencing applications, when operated over low bandwidth telephone lines, provide very low temporal resolution of pictures, of the order of less than a frame per second, resulting in jerky movement of objects. This paper presents a practical solution for sign language communication, offering adequate temporal resolution of images using moving binary sketches or cartoons, implemented on standard personal computer hardware with low-cost cameras and communicating over telephone lines. To extract cartoon points an efficient feature extraction algorithm adaptive to the global statistics of the image is proposed. To improve the subjective quality of the binary images, irreversible preprocessing techniques, such as isolated point removal and predictive filtering, are used. A simple, efficient and fast recursive temporal prefiltering scheme, using histograms of successive frames, reduces the additive and multiplicative noise from low-cost cameras. An efficient three-dimensional (3-D) compression scheme codes the binary sketches. Subjective tests performed on the system confirm that it can be used for sign language communication over telephone lines.

Behavioral and Physiological Analyses of Parturition In Pregnant Rats: Insights Derived from Intrauterine Telemetry

NASA Technical Reports Server (NTRS)

Villareal, J.; Mallery, E.; Lynch, A.; Mills, N.; Baer, L.; Wade, C.; Ronca, A.; Dalton, Donnie (Technical Monitor)

2002-01-01

During labor and birth, fetuses are exposed to considerable physical stimulation associated with labor contractions and expulsion from the womb These forces are important for the neonates' adaptation to tile extrauterine environment. To further our understanding of the relationship between labor and postpartum outcome, we developed a novel method for measuring intrauterine pressure (IUP) in freely-moving, late pregnant and parturient rats that enables us to make precise, reliable measures of the forces experienced by rat fetuses during parturition. A small (1.25 x 4 cm) telemetric blood pressure sensor was fitted within a fluid-filled balloon, similar in size to a full term rat fetus. On Gestational day (G) 19 of the rats' 22/23 day pregnancy, each dam was anesthetized and a balloon/sensor unit surgically implanted within the uterus following removal of two fetuses. Comparisons were made between sensor-implanted dams (IMPL) and a control conditions: 1) LAP-R, laparotomy with two fetuses removed or 2) LAP-NR, laparotomy with no fetuses removed. IUP signals were sampled at 10s intervals from the IMPL dams during labor and birth. Dams in all three conditions were videorecorded enabling us to analyze the effect of the implant on behavioral expressions of parturition. Contraction frequency, duration, pup-to-pup birth intervals and pup-oriented activities of the dams measured from one hour prior to the first pup birth until the birth of the third pup were unaffected by the sensor implant. Intrauterine telemetry of freely-moving dams offers significant advantages over conventional hardwired IUP measurement techniques. These findings establish and validate intrauterine telemetry as a reliable, non-invasive technique for quantifying pressures associated with parturition.

Deciphering the main venom components of the ectoparasitic ant-like bethylid wasp, Scleroderma guani.

PubMed

Zhu, Jia-Ying

2016-04-01

Similar to venom found in most venomous animals, parasitoid venoms contain a complex cocktail of proteins with potential agrichemical and pharmaceutical use. Even though parasitoids are one of the largest group of venomous animals, little is known about their venom composition. Recent few studies revealed high variated venom composition existing not only in different species but also between closely related strains, impling that increasing information on the venom proteins from more greater diversity of species of different taxa is key to comprehensively uncover the complete picture of parasitoid venom. Here, we explored the major protein components of the venom of ectoparasitic ant-like bethylid wasp, Scleroderma guani by an integrative transcriptomic-proteomic approach. Illumina deep sequencing of venom apparatus cDNA produced 49,873 transcripts. By mapping the peptide spectral data derived from venom reservoir against these transcripts, mass spectrometry analysis revealed ten main venom proteins, including serine proteinase, metalloprotease, dipeptidyl peptidase IV, esterase, antithrombin-III, acid phosphatase, neural/ectodermal development factor IMP-L2 like protein, venom allergen 3, and unknown protein. Interestingly, one serine proteinase was firstly identified with rarely high molecular weight about 200 kDa in parasitoid venom. The occurrence of abundant acid phosphatase, antithrombin-III and venom allergen 3 demonstrated that S. guani venom composition is similar to that of social wasp venoms. All identified venom genes showed abundantly biased expression in venom apparatus, indicating their virulent functions involved in parasitization. This study shed light on the more better understanding of parasitoid venom evolution across species and will facilitate the further elucidation of function and toxicity of these venom proteins. Copyright © 2016 Elsevier Ltd. All rights reserved.

A Measurement and Power Line Communication System Design for Renewable Smart Grids

NASA Astrophysics Data System (ADS)

Kabalci, E.; Kabalci, Y.

2013-10-01

The data communication over the electric power lines can be managed easily and economically since the grid connections are already spread around all over the world. This paper investigates the applicability of Power Line Communication (PLC) in an energy generation system that is based on photovoltaic (PV) panels with the modeling study in Matlab/Simulink. The Simulink model covers the designed PV panels, boost converter with Perturb and Observe (P&O) control algorithm, full bridge inverter, and the binary phase shift keying (BPSK) modem that is utilized to transfer the measured data over the power lines. This study proposes a novel method to use the electrical power lines not only for carrying the line voltage but also to transmit the measurements of the renewable energy generation plants. Hence, it is aimed at minimizing the additional monitoring costs such as SCADA, Ethernet-based or GSM based systems by using the proposed technique. Although this study is performed with solar power plants, the proposed model can be applied to other renewable generation systems. Consequently, the usage of the proposed technique instead of SCADA or Ethernet-based systems eliminates additional monitoring costs.

A LINE POLE 20, STUBBED HISTORIC POLE WITH ORIGINAL GLASS ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

A LINE POLE 20, STUBBED HISTORIC POLE WITH ORIGINAL GLASS PIN-TYPE INSULATORS AND INTACT COMMUNICATION LINE CROSS ARM. VIEW TO WEST. - Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Along West Rosebud Creek, Fishtail, Stillwater County, MT

A LINE POLE 20, DETAIL OF ORIGINAL GLASS PINTYPE INSULATORS ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

A LINE POLE 20, DETAIL OF ORIGINAL GLASS PIN-TYPE INSULATORS AND INTACT COMMUNICATION LINE CROSS ARM WITH TWO GLASS INSULATORS. VIEW TO NORTHWEST. - Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Along West Rosebud Creek, Fishtail, Stillwater County, MT

A LINE POLE 75, DETAIL OF ORIGINAL GLASS PINTYPE INSULATORS ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

A LINE POLE 75, DETAIL OF ORIGINAL GLASS PIN-TYPE INSULATORS AND INTACT COMMUNICATION LINE CROSS ARM WITH ONE GLASS INSULATOR. VIEW TO SOUTHWEST. - Mystic Lake Hydroelectric Facility, Electric Transmission A Line, Along West Rosebud Creek, Fishtail, Stillwater County, MT

Modeling Auditory-Haptic Interface Cues from an Analog Multi-line Telephone

NASA Technical Reports Server (NTRS)

Begault, Durand R.; Anderson, Mark R.; Bittner, Rachael M.

2012-01-01

The Western Electric Company produced a multi-line telephone during the 1940s-1970s using a six-button interface design that provided robust tactile, haptic and auditory cues regarding the "state" of the communication system. This multi-line telephone was used as a model for a trade study comparison of two interfaces: a touchscreen interface (iPad)) versus a pressure-sensitive strain gauge button interface (Phidget USB interface controllers). The experiment and its results are detailed in the authors' AES 133rd convention paper " Multimodal Information Management: Evaluation of Auditory and Haptic Cues for NextGen Communication Dispays". This Engineering Brief describes how the interface logic, visual indications, and auditory cues of the original telephone were synthesized using MAX/MSP, including the logic for line selection, line hold, and priority line activation.

Advanced On-the-Job Training System: Transition Plan

DTIC Science & Technology

1990-05-01

992NP. The 992NP is connected to the UDS CSU/DSU 56K modem with standard telephone wire (four wire). The 56K modem is connected to the 56K communications...UDS CSU/DSU 56K modems . One 56K line from Brooks is connected to Building 428 and the other line is connected to Building 1101. Building 1101 acts as...the central communications node at Bergstrom AFB as illustrated in Figure A- 4. The 56K lines from Brooks are connected to the 56K modems which are in

Extending the data rate of non-line-of-sight UV communication with polarization modulation

NASA Astrophysics Data System (ADS)

Yin, Hongwei; Jia, Honghui; Zhang, Hailiang; Wang, Xiaofeng; Chang, Shengli; Yang, Juncai

2012-10-01

With low radiation background of solar-blind UV and strong scattering of UV photons by atmospheric particles, UV communication can be made use of to set up a non-line-of-sight (NLOS) free-space optical communication link. Polarization modulation, besides the traditional intensity modulation, is presented to enhance the data rate of the UV communication system. The configuration and the working process of the dually modulated UV communication system with intensity modulation and polarization, the theoretical evaluation of polarization modulation, and a numerical of the scattering matrix are presented, with the conclusion that polarization modulation is achievable. By adding the polarizing devices and changing the coding procedures, the existing singly-modulated UV communication systems with intensity modulation are easily modified to be dually-modulated ones with polarization modulation and intensity modulation. Ideally speaking, the data rate of the dually-modulated UV communication system is the product of the data rate of the singly modulated system and the number of polarization modulation.

Teleoperation of an experimental mobile vehicle via a free-space optical laser line-of-sight communication link for use in nuclear power plant environments

NASA Astrophysics Data System (ADS)

Girach, Khalid; Bouazza-Marouf, K.; Kerr, David; Hewit, Jim

1994-11-01

The paper describes the investigations carried out to implement a line of sight control and communication link for a mobile robot vehicle for use in structured nuclear semi-hazardous environments. Line of sight free space optical laser communication links for remote teleoperation have important applications in hazardous environments. They have certain advantages over radio/microwave links and umbilical control such as greater protection against generation of and susceptance to electro-magnetic fields. The cable-less environment provides increased integrity and mechanical freedom to the mobile robot. However, to maintain the communication link, continuous point and tracking is required between the base station and the mobile vehicle. This paper presents a novel two ended optical tracking system utilizing the communication laser beams and photodetectors. The mobile robot is a six wheel drive vehicle with a manipulator arm which can operate in a variety of terrain. The operator obtains visual feedback information from cameras placed on the vehicle. From this information, the speed and direction of the vehicle can be controlled from a joystick panel. We describe the investigations carried out for the communication of analogue video and digital data signals over the laser link for speed and direction control.

"Party Line" Information Use Studies and Implications for ATC Datalink Communications

NASA Technical Reports Server (NTRS)

Hansman, R. John; Pritchett, Amy; Midkiff, Alan

1995-01-01

The perceived importance and utilization of 'party line' information by air carrier flight crews was investigated through pilot surveys and a flight simulation study. The importance, availability, and accuracy of party line information elements were explored through surveys of pilots of several operational types. The survey identified numerous traffic and weather party line information elements which were considered important. These elements were scripted into a full-mission flight simulation which examined the utilization of party line information by studying subject responses to specific information element stimuli. The awareness of the different Party Line elements varied, and awareness was also affected by pilot workload. In addition, pilots were aware of some traffic information elements, but were reluctant to act on Party Line Information alone. Finally, the results of both the survey and the simulation indicated that the importance of party line information appeared to be greatest for operations near or on the airport. This indicates that caution should be exercised when implementing datalink communications in tower and close-in terminal control sectors.

'Party Line' Information Use Studies and Implications for ATV Datalink Communications

NASA Technical Reports Server (NTRS)

Pritchett, Amy; Hansman, R. John; Midkiff, Alan

1995-01-01

The perceived importance and utilization of 'party line' information by air carrier flight crews was investigated through pilot surveys and a flight simulation study. The Importance, Availability, and Accuracy of party line information elements were explored through surveys of pilots of several operational types. The survey identified numerous traffic and weather party line information elements which were considered important. These elements were scripted into a full-mission flight simulation which examined the utilization of party line information by studying subject responses to specific information element stimuli. The awareness of the different Party Line elements varied, and awareness was also affected by pilot workload. In addition, pilots were aware of some traffic information elements, but were reluctant to act on Party Line Information alone. Finally, the importance of party line information appears to be greatest for operations near or on the airport. This indicates that caution should be exercised when implementing datalink communications in tower and close-in terminal control sectors.

NRL SSD Research Achievements: 19902000. Volume 4

DTIC Science & Technology

2015-10-30

optically determined QPO frequencies from Haswell et al. (2000) and J Patterson & D. Skillman 2000, private communication ). The dotted lines line pertain to...Figure 90s.3III.8 - Daytime tomography using ultraviolet and radio frequency measurements. The retrieved electron density using LORAAS daytime 911 Å...very important because of the effects of the ionosphere on global long- distance radio communications and over-the-horizon radar. Additional mission

Identification of Important "Party Line" Information Elements and the Implications for Situational Awareness in the Datalink Environment

NASA Technical Reports Server (NTRS)

Midkiff, Alan H.; Hansman, R. John, Jr.

1992-01-01

Air/ground digital datalink communications are an integral component of the FAA's Air Traffic Control (ATC) modernization strategy. With the introduction of datalink into the ATC system, there is concern over the potential loss of situational awareness by flight crews due to the reduction in the "party line" information available to the pilot. "Party line" information is gleaned by flight crews overhearing communications between ATC and other aircraft. In the datalink environment, party line information may not be available due to the use of discrete addressing. Information concerning the importance, availability, and accuracy of party line elements was explored through an opinion survey of active air carrier flight crews. The survey identified numerous important party line elements. These elements were scripted into a full-mission flight simulation. The flight simulation experiment examined the utilization of party line information by studying subject responses to the specific information elements. Some party line elements perceived as important were effectively utilized by flight crews in the simulated operational environment. However, other party line elements stimulated little or no increase in situational awareness. The ability to assimilate and use party line information appeared to be dependent on workload, time availability, and the tactical/strategic nature of the situations. In addition, the results of both the survey and the simulation indicated that the importance of party line information appeared to be greatest for operations near or on the airport. This indicates that caution must be exercised when implementing datalink communications in these high workload, tactical sectors. This document is based on the thesis of Alan H. Midkiff submitted in partial fulfillment of the degree of Master of Science in Aeronautics and Astronautics at the Massachusetts Institute of Technology.

47 CFR 32.5040 - Private line revenue.

Code of Federal Regulations, 2010 CFR

2010-10-01

... Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) COMMON CARRIER SERVICES UNIFORM SYSTEM OF ACCOUNTS... communications between specific locations (e.g., point-to-point communications. It includes revenue from subvoice grade, voice grade, audio and video program grade, digital transmission and local private network...

Research of Characteristics of the Low Voltage Power Line in Underground Coal Mine

NASA Astrophysics Data System (ADS)

Wei, Shaoliang; Qin, Shiqun; Gao, Wenchang; Cheng, Fengyu; Cao, Zhongyue

The power line communications (PLCs) can count on existing electrical connections reaching each corner in the locations where such applications are required, so signal transmission over power lines is nowadays gaining more and more interest for applications like internet. The research of characteristics of the low voltage power line is the fundamental and importance task. This work presents a device to test the characteristics of the low voltage power line. The low voltage power line channel characteristics overground and the channel characteristics underground were tested in using this device. Experiments show that, the characteristics are different between the PLCs channel underground coal mine and the PLC channel overground. Different technology should be adopted to structure the PLCs channel model underground coal mine and transmit high speed digital signal. But how to use the technology better to the high-speed digital communication under coal mine is worth of further studying.

System for simultaneously loading program to master computer memory devices and corresponding slave computer memory devices

NASA Technical Reports Server (NTRS)

Hall, William A. (Inventor)

1993-01-01

A bus programmable slave module card for use in a computer control system is disclosed which comprises a master computer and one or more slave computer modules interfacing by means of a bus. Each slave module includes its own microprocessor, memory, and control program for acting as a single loop controller. The slave card includes a plurality of memory means (S1, S2...) corresponding to a like plurality of memory devices (C1, C2...) in the master computer, for each slave memory means its own communication lines connectable through the bus with memory communication lines of an associated memory device in the master computer, and a one-way electronic door which is switchable to either a closed condition or a one-way open condition. With the door closed, communication lines between master computer memory (C1, C2...) and slave memory (S1, S2...) are blocked. In the one-way open condition invention, the memory communication lines or each slave memory means (S1, S2...) connect with the memory communication lines of its associated memory device (C1, C2...) in the master computer, and the memory devices (C1, C2...) of the master computer and slave card are electrically parallel such that information seen by the master's memory is also seen by the slave's memory. The slave card is also connectable to a switch for electronically removing the slave microprocessor from the system. With the master computer and the slave card in programming mode relationship, and the slave microprocessor electronically removed from the system, loading a program in the memory devices (C1, C2...) of the master accomplishes a parallel loading into the memory devices (S1, S2...) of the slave.

Optical communications for transport aircraft

NASA Technical Reports Server (NTRS)

Stengel, Robert

1994-01-01

Optical communications for transport aircraft are discussed. The problem involves: increasing demand for radio-frequency bands from an enlarging pool of users (aircraft, ground and sea vehicles, fleet operators, traffic control centers, and commercial radio and television); desirability of providing high-bandwidth dedicated communications to and from every aircraft in the National Airspace System; need to support communications, navigation, and surveillance for a growing number of aircraft; and improved meteorological observations by use of probe aircraft. The solution involves: optical signal transmission support very high data rates; optical transmission of signals between aircraft, orbiting satellites, and ground stations, where unobstructed line-of-sight is available; conventional radio transmissions of signals between aircraft and ground stations, where optical line-of-sight is unavailable; and radio priority given to aircraft in weather.

REMOTE: Modem Communicator Program for the IBM personal computer

DOE Office of Scientific and Technical Information (OSTI.GOV)

McGirt, F.

1984-06-01

REMOTE, a Modem Communicator Program, was developed to provide full duplex serial communication with arbitrary remote computers via either dial-up telephone modems or direct lines. The latest version of REMOTE (documented in this report) was developed for the IBM Personal Computer.

47 CFR 22.1005 - Priority of service.

Code of Federal Regulations, 2010 CFR

2010-10-01

... Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) COMMON CARRIER SERVICES PUBLIC MOBILE SERVICES... central stations. However, they may also be used to render private leased line communication service, provided that such usage does not reduce or impair the extent or quality of communication service which...

MER Surface Phase; Blurring the Line Between Fault Protection and What is Supposed to Happen

NASA Technical Reports Server (NTRS)

Reeves, Glenn E.

2008-01-01

An assessment on the limitations of communication with MER rovers and how such constraints drove the system design, flight software and fault protection architecture, blurring the line between traditional fault protection and expected nominal behavior, and requiring the most novel autonomous and semi-autonomous elements of the vehicle software including communication, surface mobility, attitude knowledge acquisition, fault protection, and the activity arbitration service.

Communication Indicators. II. 100 Years of Mass Communication in Germany. Communication and Society 4.

ERIC Educational Resources Information Center

Galli, Anton; Vogler, Kurt

This report summarizes the findings of a Unesco-sponsored study designed to identify quantitative relationships between mass communication and economic growth in the Federal Republic of Germany. The first and second sections of the report outline the most important economic and social lines of development in Germany from the end of the nineteenth…

Chip-to-Chip Half Duplex Spiking Data Communication over Power Supply Rails

NASA Astrophysics Data System (ADS)

Hashida, Takushi; Nagata, Makoto

Chip-to-chip serial data communication is superposed on power supply over common Vdd/Vss connections through chip, package, and board traces. A power line transceiver demonstrates half duplex spiking communication at more than 100Mbps. A pair of transceivers consumes 1.35mA from 3.3V, at 130Mbps. On-chip power line LC low pass filter attenuates pseudo-differential communication spikes by 30dB, purifying power supply current for internal circuits. Bi-directional spiking communication was successfully examined in a 90-nm CMOS prototype setup of on-chip waveform capturing. A micro controller forwards clock pulses to and receives data streams from a comparator based waveform capturer formed on a different chip, through a single pair of power and ground traces. The bit error rate is small enough not to degrade waveform acquisition capability, maintaining the spurious free dynamic range of higher than 50dB.

NB-PLC channel modelling with cyclostationary noise addition & OFDM implementation for smart grid

NASA Astrophysics Data System (ADS)

Thomas, Togis; Gupta, K. K.

2016-03-01

Power line communication (PLC) technology can be a viable solution for the future ubiquitous networks because it provides a cheaper alternative to other wired technology currently being used for communication. In smart grid Power Line Communication (PLC) is used to support communication with low rate on low voltage (LV) distribution network. In this paper, we propose the channel modelling of narrowband (NB) PLC in the frequency range 5 KHz to 500 KHz by using ABCD parameter with cyclostationary noise addition. Behaviour of the channel was studied by the addition of 11KV/230V transformer, by varying load location and load. Bit error rate (BER) Vs signal to noise ratio SNR) was plotted for the proposed model by employing OFDM. Our simulation results based on the proposed channel model show an acceptable performance in terms of bit error rate versus signal to noise ratio, which enables communication required for smart grid applications.

Toward The Goal Of Video Deaf Communication Over Public Telephone Lines

NASA Astrophysics Data System (ADS)

Healy, Donald J.; Clements, Mark A.

1986-11-01

At least 500,000 profoundly deaf persons in the United States communicate primarily by American Sign Language (ASL), a language quite distinct from English and not well suited to writing. Currently, telephone communication for an ASL user is basically limited to use of a teletype machine, which requires both typing skills and proficiency in English. This paper reviews recent research relevant to the development of techniques which would allow manual communication across existing telephone channels using video imagery. Two possibilities for such manual communication are ASL and cued speech. The latter technique uses hand signals to aid lip reading. In either case, conventional television video transmission would require a bandwidth many times that available on a telephone channel. The achievement of visual communication using sign language or cued speech at data rates below 10 kbps, low enough to be transmitted over a public telephone line, will require the development of new data reducing algorithms. Avenues for future research toward this goal are presented.

Utilization of photovoltaic for broadband satellite communications in rural area of Thailand

NASA Astrophysics Data System (ADS)

Jinayim, Theerawut; Mungkung, Narong; Kasayapanand, Nat

2013-06-01

Electricity, Information and Communication Technologies (ICTs) are very important not only in urban areas but also in rural areas. To provide ICTs service in rural areas, sources of electricity and communication infrastructures must be implemented. Electricity is a major condition due to the fact that all electronic devices needed it in order to power on, so that it is impossible to operate any forms of ICTs in areas where the main national grid line is unavailable. Almost rural areas of Thailand where the main national grid line is unavailable have very good sunlight intensity. Photovoltaic is the most effective renewable energy technologies in those areas for meeting electricity needed in areas that are not connected to the main national grid line. In this paper, the efficiency utilization of photovoltaic as source of electricity for broadband satellite communication systems as well as social and economic impact and quality of life of people in rural areas of Thailand are presented. The results show that most rural communities would be able to universally access to the basic telecommunications services such as internet access and public telephone via satellite communication systems. However, in some field case study, broadband internet access via satellite communication may be unnecessary for some rural communities and the most exactly rural communities needed are electricity for household usage and battery charger.

Below the poverty line and non-communicable diseases in Kerala: The Epidemiology of Non-communicable Diseases in Rural Areas (ENDIRA) study.

PubMed

Menon, Jaideep; Vijayakumar, N; Joseph, Joseph K; David, P C; Menon, M N; Mukundan, Shyam; Dorphy, P D; Banerjee, Amitava

2015-01-01

India carries the greatest burden of global non-communicable diseases (NCDs). Poverty is strongly associated with NCDs but there are few prevalence studies which have measured poverty in India, particularly in rural settings. In Kerala, India, a population of 113,462 individuals was identified. The "Epidemiology of Non-communicable Diseases in Rural Areas" (ENDIRA) study was conducted via ASHAs (Accredited Social Health Activists). Standardised questionnaires were used in household interviews of individuals ≥18years during 2012 to gather sociodemographic, lifestyle and medical data for this population. The Government of Kerala definition of "the poverty line" was used. The association between below poverty line (BPL) status, NCDs and risk factors was analysed in multivariable regression models. 84,456 adults were included in the analyses (25.4% below the poverty line). The prevalence of NCDs was relatively common: myocardial infarction (MI) 1.4%, stroke 0.3%, respiratory diseases 5.0%, and cancer 1.1%. BPL status was not associated with age (p=0.96) or gender (p=0.26). Compared with those above the poverty line (APL), the BPL group was less likely to have diabetes, hypertension or dyslipidaemia (p<0.0001), and more likely to smoke (p<0.0001). Compared with APL, BPL was associated with stroke (OR 1.33, 1.04-1.69; p=0.02) and respiratory disease (OR 1.23, 1.15-1.32; p<0.0001) in multivariable analyses, but not MI or cancer. In rural Kerala, BPL status was associated with stroke and respiratory diseases, but not with MI and cancer although it was associated with smoking status, compared with above poverty line status. Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.

32 CFR 552.33 - Estates and methods of acquisition.

Code of Federal Regulations, 2011 CFR

2011-07-01

... similar provision will be by letter from the Chief of Engineers to the owner of the property, based upon a...” in connection with a military public works project, prior to express authorization by law for the..., power lines, communication lines, water lines, and sewer lines will be the same as prescribed in...

32 CFR 552.33 - Estates and methods of acquisition.

Code of Federal Regulations, 2012 CFR

2012-07-01

... similar provision will be by letter from the Chief of Engineers to the owner of the property, based upon a...” in connection with a military public works project, prior to express authorization by law for the..., power lines, communication lines, water lines, and sewer lines will be the same as prescribed in...

32 CFR 552.33 - Estates and methods of acquisition.

Code of Federal Regulations, 2013 CFR

2013-07-01

... similar provision will be by letter from the Chief of Engineers to the owner of the property, based upon a...” in connection with a military public works project, prior to express authorization by law for the..., power lines, communication lines, water lines, and sewer lines will be the same as prescribed in...

32 CFR 552.33 - Estates and methods of acquisition.

Code of Federal Regulations, 2014 CFR

2014-07-01

... similar provision will be by letter from the Chief of Engineers to the owner of the property, based upon a...” in connection with a military public works project, prior to express authorization by law for the..., power lines, communication lines, water lines, and sewer lines will be the same as prescribed in...

Cut-and-paste restoration of entanglement transmission

NASA Astrophysics Data System (ADS)

Cuevas, Álvaro; Mari, Andrea; De Pasquale, Antonella; Orieux, Adeline; Massaro, Marcello; Sciarrino, Fabio; Mataloni, Paolo; Giovannetti, Vittorio

2017-07-01

The distribution of entangled quantum systems among two or more nodes of a network is a key task at the basis of quantum communication, quantum computation, and quantum cryptography. Unfortunately, the transmission lines used in this procedure can introduce so many perturbations and so much noise in the transmitted signal that they prevent the possibility of restoring quantum correlations in the received messages either by means of encoding optimization or by exploiting local operations and classical communication. In this work we present a procedure which allows one to improve the performance of some of these channels. The mechanism underpinning this result is a protocol which we dub cut and paste, as it consists in extracting and reshuffling the subcomponents of these communication lines, which finally succeed in correcting each other. The proof of this counterintuitive phenomenon, while improving our theoretical understanding of quantum entanglement, also has a direct application in the realization of quantum information networks based on imperfect and highly noisy communication lines. A quantum optics experiment, based on the transmission of single-photon polarization states, is also presented which provides a proof-of-principle test of the proposed protocol.

Communication guidelines as a learning tool: an exploration of user preferences in general practice.

PubMed

Veldhuijzen, Wemke; Ram, Paul M; van der Weijden, Trudy; van der Vleuten, Cees P M

2013-02-01

To explore characteristics of written communication guidelines that enhance the success of training aimed at the application of the recommendations in the guidelines. Seven mixed focus groups were held consisting of communication skill teachers and communication skill learners and three groups with only learners. Analysis was done in line with principles of grounded theory. Five key attributes of guidelines for communication skill training were identified: complexity, level of detail, format and organization, type of information, and trustworthiness/validity. The desired use of these attributes is related to specific educational purposes and learners' expertise. The low complexity of current communication guidelines is appreciated, but seems ad odds with the wish for more valid communication guidelines. Which guideline characteristics are preferred by users depends on the expertise of the learners and the educational purpose of the guideline. Communication guidelines can be improved by modifying the key attributes in line with specific educational functions and learner expertise. For example: the communication guidelines used in GP training in the Netherlands, seem to offer an oversimplified model of doctor patient communication. This model may be suited for undergraduate learning, but does not meet the validity demands of physicians in training. Copyright © 2012 Elsevier Ireland Ltd. All rights reserved.

The Effects of Color Cues on Typically Developing Preschoolers' Speed of Locating a Target Line Drawing: Implications for Augmentative and Alternative Communication Display Design

ERIC Educational Resources Information Center

Thistle, Jennifer J.; Wilkinson, Krista

2009-01-01

Purpose: This research examined how the presence of color in relation to a target within an augmentative and alternative communication array influenced the speed with which typically developing preschoolers located a target line drawing. Method: Fifteen children over the age of 4 years (from 4;2 [years;months] to 5;4) and 15 children under the age…

Hybrid Airships in Joint Logistics Over the Shore (JLOTS)

DTIC Science & Technology

2013-06-13

invaluable. Additionally, special thanks are extended to my small group and instructors Mr. Thomas Meara, Mr. Leo Verhaeg, Mr. Kenneth Szmed, and Dr...LHS Load Handling System LMSR Large, Medium Speed Roll-on/Roll-Off Ship LOC Lines of Communication LSV Logistics Support Vessel MEB Marine...that connected operations to a source of supply became known as Lines-of- Communication ( LOC ). Increasing the length of a LOC makes an army more

A Summary of Two Recent UAS Command and Control (C2) Communications Feasibility Studies

NASA Technical Reports Server (NTRS)

Ponchak, Denise S.; Auld, Elisabeth; Church, Gary; Henriksen, Stephen

2016-01-01

In Spring of 2015, the NextGen Institute conducted two UAS C2 Communications Feasibility Studies on behalf of the FAA UAS Integration Office to develop two limited UAS C2 operational examples, each involving low-altitude BLOS (Beyond Line of Sight) Line of Communication (LOC) UAS applications, as part of assessing the myriad practical UAS C2 deployment challenges associated with these approaches. The studies investigated the feasibility of "Point-to-Point" (PTP) and "Network" approaches to UAS C2 to better understand potential user needs and to explore evolutionary paths to establishing a nation-wide system for delivering UAS C2 communications. This paper will summarize the solicitation, approach and results of the two studies teams led by Aviation Management Associates, Inc. and Exelis Inc.

Riemann sum method for non-line-of-sight ultraviolet communication in noncoplanar geometry

NASA Astrophysics Data System (ADS)

Song, Peng; Zhou, Xianli; Song, Fei; Zhao, Taifei; Li, Yunhong

2017-12-01

The non-line-of-sight ultraviolet (UV) communication relies on the scattering common volume, however, it is difficult to carry out the triple integral operation of the scattering common volume. Based on UV single-scattering propagation theory and the spherical coordinate, we propose to use the Riemann sum method (RSM) to analyze the link path loss (PL) of UV communication system in noncoplanar geometries, and carried out related simulations. In addition, an outdoor testbed using UV light-emitting diode was set up to provide support for the validity of the RSM. When the elevation angles of the transmitter or the receiver are small, using RSM, the channel PL and temporal response of UV communication systems can be effectively and efficiently calculated. It is useful in UV embedded system design.

Medium frequency propagation characteristics of different transmission lines in an underground coal mine

PubMed Central

Li, Jingcheng; Waynert, Joseph A.; Whisner, Bruce G.

2015-01-01

A medium frequency (MF) communication system operating in an underground coal mine couples its signals to a long conductor, which acts as an MF transmission line (TL) in a tunnel to permit communications among transceivers along the line. The TL is generally the longest signal path for the system, and its propagation characteristics will have a major impact on the performance of the MF communication system. In this study, the propagation characteristics of three types of MF TLs in two layouts—on the roof and on the floor of a coal mine tunnel—were obtained in an effort to understand the propagation characteristics of different TLs in different locations. The study confirmed a low MF signal loss on all of these TLs. The study also found that the TLs in different layouts had substantially different propagation characteristics. The propagation characteristics of these different TLs in different layouts are presented in the paper. PMID:26203349

Effective Vaccine Communication during the Disneyland Measles Outbreak

PubMed Central

Broniatowski, David Andre; Hilyard, Karen M.; Dredze, Mark

2016-01-01

Vaccine refusal rates have increased in recent years, highlighting the need for effective risk communication, especially over social media. Fuzzy-trace theory predicts that individuals encode bottom-line meaning ("gist") and statistical information ("verbatim") in parallel and that articles expressing a clear gist will be most compelling. We coded news articles (n=4,686) collected during the 2014–2015 Disneyland measles for content including statistics, stories, or opinions containing bottom-line gists regarding vaccines and vaccine-preventable illnesses. We measured the extent to which articles were compelling by how frequently they were shared on Facebook. The most widely shared articles expressed bottom-line opinions, although articles containing statistics were also more likely to be shared than articles lacking statistics. Stories had limited impact on Facebook shares. Results support Fuzzy Trace Theory's predictions regarding the distinct yet parallel impact of categorical gist and statistical verbatim information on public health communication. PMID:27179915

Effective vaccine communication during the disneyland measles outbreak.

PubMed

Broniatowski, David A; Hilyard, Karen M; Dredze, Mark

2016-06-14

Vaccine refusal rates have increased in recent years, highlighting the need for effective risk communication, especially over social media. Fuzzy-trace theory predicts that individuals encode bottom-line meaning ("gist") and statistical information ("verbatim") in parallel and those articles expressing a clear gist will be most compelling. We coded news articles (n=4581) collected during the 2014-2015 Disneyland measles for content including statistics, stories, or bottom-line gists regarding vaccines and vaccine-preventable illnesses. We measured the extent to which articles were compelling by how frequently they were shared on Facebook. The most widely shared articles expressed bottom-line gists, although articles containing statistics were also more likely to be shared than articles lacking statistics. Stories had limited impact on Facebook shares. Results support Fuzzy Trace Theory's predictions regarding the distinct yet parallel impact of categorical gist and statistical verbatim information on public health communication. Copyright © 2016 Elsevier Ltd. All rights reserved.

Research of home energy management system based on technology of PLC and ZigBee

NASA Astrophysics Data System (ADS)

Wei, Qi; Shen, Jiaojiao

2015-12-01

In view of the problem of saving effectively energy and energy management in home, this paper designs a home energy intelligent control system based on power line carrier communication and wireless ZigBee sensor networks. The system is based on ARM controller, power line carrier communication and wireless ZigBee sensor network as the terminal communication mode, and realizes the centralized and intelligent control of home appliances. Through the combination of these two technologies, the advantages of the two technologies complement each other, and provide a feasible plan for the construction of energy-efficient, intelligent home energy management system.

47 CFR 32.5040 - Private line revenue.

Code of Federal Regulations, 2011 CFR

2011-10-01

... 47 Telecommunication 2 2011-10-01 2011-10-01 false Private line revenue. 32.5040 Section 32.5040 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) COMMON CARRIER SERVICES UNIFORM SYSTEM OF ACCOUNTS FOR TELECOMMUNICATIONS COMPANIES Instructions For Revenue Accounts § 32.5040 Private line revenue...

47 CFR 32.5040 - Private line revenue.

Code of Federal Regulations, 2014 CFR

2014-10-01

... 47 Telecommunication 2 2014-10-01 2014-10-01 false Private line revenue. 32.5040 Section 32.5040 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) COMMON CARRIER SERVICES UNIFORM SYSTEM OF ACCOUNTS FOR TELECOMMUNICATIONS COMPANIES Instructions For Revenue Accounts § 32.5040 Private line revenue...

HERALD OF COMMUNICATIONS, 1963. VOL. 23, NO. 1(274).

DTIC Science & Technology

enterprises and methods of raising it Green lights for the long distance through calls Organization of delivery service in Voronezh Communication workers ...of Ukrainian SSR can and must work better Production problems are at the center of attention This is the way Soviet communication workers act...Competition for the title ’’Communist-labor main line’’ Literature for communication workers

Interactive full channel teletext system for cable television nets

NASA Astrophysics Data System (ADS)

Vandenboom, H. P. A.

1984-08-01

A demonstration set-up of an interactive full channel teletext (FCT) system for cable TV networks with two-way data communication possibilities was designed and realized. In FCT all image lines are used for teletext data lines. The FCT decoder was placed in the mini-star, and the FCT encoder which provides the FCT signal was placed in the local center. From the FCT signal a number of data lines are selected using an extra FCT decoder. They are placed on the image lines reserved for teletext so that a normal TV receiver equipped with a teletext decoder, can process the selected data lines. For texts not on hand in the FCT signal, a command can be sent to the local center via the data communication path. A cheap and simple system is offered in which the number of commanded pages or books is in principle unlimited, while the used waiting time and channel capacity is limited.

Comparison of animated jet stream visualizations

NASA Astrophysics Data System (ADS)

Nocke, Thomas; Hoffmann, Peter

2016-04-01

The visualization of 3D atmospheric phenomena in space and time is still a challenging problem. In particular, multiple solutions of animated jet stream visualizations have been produced in recent years, which were designed to visually analyze and communicate the jet and related impacts on weather circulation patterns and extreme weather events. This PICO integrates popular and new jet animation solutions and inter-compares them. The applied techniques (e.g. stream lines or line integral convolution) and parametrizations (color mapping, line lengths) are discussed with respect to visualization quality criteria and their suitability for certain visualization tasks (e.g. jet patterns and jet anomaly analysis, communicating its relevance for climate change).

Nanomatériaux : Une revue des définitions, des applications et des effets sur la santé. Comment implémenter un développement sûr

NASA Astrophysics Data System (ADS)

Gaffet, Eric

2011-09-01

Nanomaterials are an active area of research but also an economic sector in full expansion which addresses many application domains. For instance, French production for the most common nanomaterials (such as silica, titanium dioxide, carbon black) is in the hundreds of thousands of tons. As for any innovation, one must consider the risks and, if necessary, establish rules to protect consumer health and that of the worker. This article addresses in particular difficulties in defining these materials, the state of knowledge on human or environmental toxicity and requirements and agencies in charge of safety.

Transmission Line Security Monitor

ScienceCinema

None

2017-12-09

The Transmission Line Security Monitor is a multi-sensor monitor that mounts directly on high-voltage transmission lines to detect, characterize and communicate terrorist activity, human tampering and threatening conditions around support towers. For more information about INL's critical infrastructure protection research, visit http://www.facebook.com/idahonationallaboratory.

Video on phone lines: technology and applications

NASA Astrophysics Data System (ADS)

Hsing, T. Russell

1996-03-01

Recent advances in communications signal processing and VLSI technology are fostering tremendous interest in transmitting high-speed digital data over ordinary telephone lines at bit rates substantially above the ISDN Basic Access rate (144 Kbit/s). Two new technologies, high-bit-rate digital subscriber lines and asymmetric digital subscriber lines promise transmission over most of the embedded loop plant at 1.544 Mbit/s and beyond. Stimulated by these research promises and rapid advances on video coding techniques and the standards activity, information networks around the globe are now exploring possible business opportunities of offering quality video services (such as distant learning, telemedicine, and telecommuting etc.) through this high-speed digital transport capability in the copper loop plant. Visual communications for residential customers have become more feasible than ever both technically and economically.

A novel high-speed PLC communication modem

DOE Office of Scientific and Technical Information (OSTI.GOV)

Abraham, K.C.; Roy, S.

1992-10-01

In this paper an innovative design for power line carrier (PLC) communication using digitally modulated signals is presented. The major contribution consists of a new signal coupler to the power line that achieves a stable transmission bandwidth of 4 KHz on distribution lines over long distances. Preliminary field tests achieved half-duplex operation at 1.2 Kbaud over a distribution power line to the 120V network and back with a symbol error rate of about 2% using less than about 10 W of average transmitted power, which is considerably superior to the present state-of-the-art PLC modems. Full-duplex operation over 120/240V intra-building wiringmore » has also been field tested at 9.6 Kbaud over distances of 3000 ft. using 1W of average transmitted power.« less

WES (Waterways Experiment Station) Communications Plan for Voice and Data

DTIC Science & Technology

1989-01-01

modem on a leased line, and two wideband HDLC 56K connections not used on the Honeywell. 30. Honeywell DPS-8 configuration, as of October 1987, is as...based voice system to support additional asynchronous dial-up modem traffic. In June 1987, Dr. N. Radhakhrishnan of the WES Information Technology...voice system (PBX) and very low-speed data communications by the laboratories using 1,200/2,400-baud asynchronous modems over analog phone lines, and

The Japanese and the American First-Line Supervisor.

ERIC Educational Resources Information Center

Bryan, Leslie A., Jr.

1982-01-01

Compares the American and Japanese first-line supervisor: production statistics, supervisory style, company loyalty, management style, and communication. Also suggests what Americans might learn from the Japanese methods. (CT)

Structuring a service line.

PubMed

Zablocki, E

1997-05-01

In 1993, Community Hospitals Indianapolis created 10 service lines--each unique to the needs of the patients it serves. Two service line leaders talk about the factors critical to successful restructuring, the working relationships established, and the importance of clear communication to ensure understanding and get buy-in to the process.

47 CFR 69.304 - Subscriber line cable and wire facilities.

Code of Federal Regulations, 2010 CFR

2010-10-01

... 47 Telecommunication 3 2010-10-01 2010-10-01 false Subscriber line cable and wire facilities. 69.304 Section 69.304 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) COMMON CARRIER SERVICES (CONTINUED) ACCESS CHARGES Apportionment of Net Investment § 69.304 Subscriber line cable and wire...

47 CFR 69.304 - Subscriber line cable and wire facilities.

Code of Federal Regulations, 2011 CFR

2011-10-01

... 47 Telecommunication 3 2011-10-01 2011-10-01 false Subscriber line cable and wire facilities. 69.304 Section 69.304 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) COMMON CARRIER SERVICES (CONTINUED) ACCESS CHARGES Apportionment of Net Investment § 69.304 Subscriber line cable and wire...

47 CFR 69.608 - Carrier Common Line hypothetical net balance.

Code of Federal Regulations, 2010 CFR

2010-10-01

... 47 Telecommunication 3 2010-10-01 2010-10-01 false Carrier Common Line hypothetical net balance. 69.608 Section 69.608 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) COMMON CARRIER... net balance. The hypothetical net balance shall be equal to a Carrier Common Line revenue requirement...

47 CFR 69.608 - Carrier Common Line hypothetical net balance.

Code of Federal Regulations, 2011 CFR

2011-10-01

... 47 Telecommunication 3 2011-10-01 2011-10-01 false Carrier Common Line hypothetical net balance. 69.608 Section 69.608 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) COMMON CARRIER... net balance. The hypothetical net balance shall be equal to a Carrier Common Line revenue requirement...

47 CFR 69.4 - Charges to be filed.

Code of Federal Regulations, 2010 CFR

2010-10-01

... Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) COMMON CARRIER SERVICES (CONTINUED) ACCESS CHARGES... shall include charges for the End User Common Line element, and for line port costs in excess of basic... each of the following elements: (1) [Reserved] (2) Carrier common line, provided that after June 30...

Research of communication quality assessment algorithm according to the standard G3-PLC

NASA Astrophysics Data System (ADS)

Chebotayev, Pavel; Klimenko, Aleksey; Myakochin, Yuri; Polyakov, Igor; Shelupanov, Alexander; Urazayev, Damir; Zykov, Dmitriy

2017-11-01

The present paper deals with the quality assessment of PLC channel which is a part of fault-tolerant self-organizing heterogeneous communication system. The PLC implementation allows to reduce exploitation costs when constructing new info-communication networks. PLC is used for transmitting information between various devices in alternating current mains. There exist different approaches to transfer information over power lines. Their differences resulted from the requirements of typical apps which use PLC as a data transmission channel. In the process of research described in this paper, the simulation of a signal in AC mains with regard to different kinds of noise caused by power line loads was performed.

Teaching Business Communication on the Production Line: A Case Study.

ERIC Educational Resources Information Center

Moore, Richard W.

1993-01-01

Analyzes the communication training received by over 4,000 workers as part of an effort to implement a team concept production system at a General Motors plant. Presents an overview of the team concept training. Discusses five barriers to effective training, four successful instructional methods, and implications for business communication. (RS)

Incorporating Computer-Mediated Communication in Project Work

ERIC Educational Resources Information Center

Musa, Faridah; Mohamed, Maslawati; Mufti, Norlaila; Latiff, Rozmel Abdul; Amin, Maryam Mohamad

2015-01-01

In line with the new trend of using computer-mediated communication (CMC) as an innovative technique in teaching and learning at higher institutions, Facebook as a channel of CMC was employed in carrying out a project work in an Academic Communication Course. For this project, students worked in groups to discuss their work and share information…

78 FR 52710 - Extension of Lines, Interconnection, Numbering, Payphone Compensation, Pole Attachment Complaint...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-08-26

... FEDERAL COMMUNICATIONS COMMISSION 47 CFR Parts 1, 51, 52, 53, 63, and 64 [FCC 96-79; FCC 96-489... Communications Commission. ACTION: Final rule; announcement of effective date. SUMMARY: This document announces..., Federal Communications Commission, Room 5-C458, 445 12th Street SW., Washington, DC 20554. Please include...

"While you still think, I already type": experienced social power reduces deliberation during e-mail communication.

PubMed

Scholl, Annika; Sassenberg, Kai

2014-11-01

E-mail allows individuals to deliberate on their communication before sending it off. For instance, communication partners can easily take their time to ponder how best to frame a request before they actually send a message. Individuals at times strategically exploit this opportunity to deliberate in order to tailor messages to their communication partner, such as when communicating with a relatively more powerful person. As social power reduces concerns about impression management, we predicted that individuals deliberate more while composing e-mail messages under low (vs. high) power. This assumption was tested with well-established power priming. As such, we expected that experienced power in one context would diminish deliberation times during a subsequent e-mail communication. An experiment manipulating the experience of (low vs. high) power and measuring deliberation times during e-mail composition supported this hypothesis. The findings thus indicate how social power alters deliberation times. More importantly, the results show that individuals not only strategically deliberate during e-mail communication in line with their current situation, but also in line with their social standing in a previous situation (here, their experience of power).

Design and implementation of a medium speed communications interface and protocol for a low cost, refreshed display computer

NASA Technical Reports Server (NTRS)

Phyne, J. R.; Nelson, M. D.

1975-01-01

The design and implementation of hardware and software systems involved in using a 40,000 bit/second communication line as the connecting link between an IMLAC PDS 1-D display computer and a Univac 1108 computer system were described. The IMLAC consists of two independent processors sharing a common memory. The display processor generates the deflection and beam control currents as it interprets a program contained in the memory; the minicomputer has a general instruction set and is responsible for starting and stopping the display processor and for communicating with the outside world through the keyboard, teletype, light pen, and communication line. The processing time associated with each data byte was minimized by designing the input and output processes as finite state machines which automatically sequence from each state to the next. Several tests of the communication link and the IMLAC software were made using a special low capacity computer grade cable between the IMLAC and the Univac.

Interaction and Communication of Agents in Networks and Language Complexity Estimates

NASA Technical Reports Server (NTRS)

Smid, Jan; Obitko, Marek; Fisher, David; Truszkowski, Walt

2004-01-01

Knowledge acquisition and sharing are arguably the most critical activities of communicating agents. We report about our on-going project featuring knowledge acquisition and sharing among communicating agents embedded in a network. The applications we target range from hardware robots to virtual entities such as internet agents. Agent experiments can be simulated using a convenient simulation language. We analyzed the complexity of communicating agent simulations using Java and Easel. Scenarios we have studied are listed below. The communication among agents can range from declarative queries to sub-natural language queries. 1) A set of agents monitoring an object are asked to build activity profiles based on exchanging elementary observations; 2) A set of car drivers form a line, where every car is following its predecessor. An unsafe distance cm create a strong wave in the line. Individual agents are asked to incorporate and apply directions how to avoid the wave. 3) A set of micro-vehicles form a grid and are asked to propagate information and concepts to a central server.

Analysis of the grounding system for a mobile communication site placed on HV power line mast

NASA Astrophysics Data System (ADS)

Bîrsan, I.; Munteanu, C.; Horgoș, M.; Ilut, T.

2016-08-01

This paper aims to analyze the potential distribution on the soil surface or potential variation on the main directions inside computing mobile site. I want to study a system made the earth a mobile communications site, antennas operator and the system of which the earth is placed on a High Voltage Power Line Mast (LEA 110 KV). I made direct measurements and I use a 3D software for analyze the results and simulating some possible solutions.

An American OMG? The Air Assault Division Employed As An Operational Maneuver Group,

DTIC Science & Technology

1992-05-15

been planned, rehearsed 32 and executed. Failure is the " cost " for over extending lines of operation and communications. Two cases, Marshal Pilsudski’s...attrition on their flanks and rear, and lines of communication are non- existent, life will be short for the OMG and the cost to the Soviets high. 160...undated), pp. 24-25. Hereafter cited as Kipp, Historical Reflections. 11. The summary of doctrine from 1977-1981 was paraphrased from Kipp, Historcal

Diverse Communications Project at Vandenberg Air Force Base

DTIC Science & Technology

2008-07-25

genus Euphilotes, the El Segundo blue butterfly spends its entire life cycle in intimate association with a species of buckwheat, in this case coast...to LF 24, Parquee Road. Approximately 1,300 feet of line would cross under Point Sal Road and continue along the northern edge of Parquee Road to...would tie MH 1964 A1 to LF 23. Approximately 1,000 feet of communication line would be installed from MH 1964 A1 north and along the northern border of

Differentiation and displacement: Unpicking the relationship between accounts of illness and social structure

PubMed Central

Gibson, Barry J; Paul, Ninu R

2014-01-01

This article seeks to unpack the relationship between social structure and accounts of illness. Taking dentine hypersensitivity as an example, this article explores the perspective that accounts of illness are sense-making processes that draw on a readily available pool of meaning. This pool of meaning is composed of a series of distinctions that make available a range of different lines of communication and action about such conditions. Such lines of communication are condensed and preserved over time and are often formed around a concept and its counter concept. The study of such processes is referred to as semantic analysis and involves drawing on the tools and techniques of conceptual history. This article goes on to explore how the semantics of dentine hypersensitivity developed. It illustrates how processes of social differentiation led to the concept being separated from the more dominant concept of dentine sensitivity and how it was medicalised, scientised and economised. In short, this study seeks to present the story of how society has developed a specific language for communicating about sensitivity and hypersensitivity in teeth. In doing so, it proposes that accounts of dentine hypersensitivity draw on lines of communication that society has preserved over time. PMID:25197262

Postflight analysis of the EVCS-LM communications link for the Apollo 15 mission

NASA Technical Reports Server (NTRS)

Royston, C. L., Jr.; Eggers, D. S.

1972-01-01

Data from the Apollo 15 mission were used to compare the actual performance of the EVCS to LM communications link with the preflight performance predictions. Based on the results of the analysis, the following conclusions were made: (1) The radio transmission loss data show good correlation with predictions during periods when the radio line of sight was obscured. (2) The technique of predicting shadow losses due to obstacles in the radio line of sight provides a good estimate of the actual shadowing loss. (3) When the transmitter was on an upslope, the radio transmission loss approached the free space loss values as the line of sight to the LM was regained.

Proceedings of the Annual Meeting of the Association for Education in Journalism and Mass Communication (79th, Anaheim, CA, August 10-13, 1996). Mass Communication and Society Division.

ERIC Educational Resources Information Center

Association for Education in Journalism and Mass Communication.

The mass communication and society section of the Proceedings contains the following 17 papers: "Deviance in News Coverage of On-Line Communications: A Print Media Comparison" (Lisa M. Weidman); "Political Tolerance of Environmental Protest: The Roles of Generalized and Specialized Information" (Catherine A. Steele and Carol M.…

Crew/computer communications study. Volume 1: Final report. [onboard computerized communications system for spacecrews

NASA Technical Reports Server (NTRS)

Johannes, J. D.

1974-01-01

Techniques, methods, and system requirements are reported for an onboard computerized communications system that provides on-line computing capability during manned space exploration. Communications between man and computer take place by sequential execution of each discrete step of a procedure, by interactive progression through a tree-type structure to initiate tasks or by interactive optimization of a task requiring man to furnish a set of parameters. Effective communication between astronaut and computer utilizes structured vocabulary techniques and a word recognition system.

Dialogue across Lines of Difference: Acknowledging and Engaging Diverse Identities in the Classroom

ERIC Educational Resources Information Center

De La Mare, Danielle M.

2013-01-01

Social identity is central to communication and culture, and while many intercultural communication textbooks devote much more space to the topic than they have in the past, undergraduate students continue to understand social identity in largely superficial terms. In order for them to grasp its complexity and its relationship to communication,…

Communicate with Parents in 7 Simple Steps

ERIC Educational Resources Information Center

Balsley, Jessica

2011-01-01

The relationship between art teachers and students' families is a complex one. Because they typically see a large volume of students in a short amount of time, art teachers are rarely the first line of communication when it comes to connecting with families on a regular basis. Most often, communication only occurs when the teacher has great news…

Valuation and handling of dialogue in leadership: a grounded theory study in Swedish hospitals.

PubMed

Grill, C; Ahlborg, G; Lindgren, E C

2011-01-01

Leadership can positively affect the work environment and health. Communication and dialogue are an important part in leadership. Studies of how dialogue is valued and handled in first-line leadership have not so far been found. The aim of this study is to develop a theoretical understanding of how first-line leaders at hospitals in western Sweden value and handle dialogue in the organisation. The study design was explorative and based on grounded theory. Data collection consisted of interviews and observations. A total of 11 first-line leaders at two hospitals in western Sweden were chosen as informants, and for four of them observation was also used. One core category emerged in the analysis: leaders' communicative actions, which could be strategically or understanding-oriented, and experienced as equal or unequal and performed equitably or inequitably, within a power relationship. Four different types of communicativeactions emerged: collaborative, nurturing, controlling, and confrontational. Leaders had strategies for creating arenas and relationships for dialogue, but dialogue could be constrained by external circumstances or ignorance of the frameworks needed to conduct and accomplish dialogue. First-line leaders should be offered guidance in understanding the consequences of consciously choosing and strengthening the communication component in leadership. The positive valuation of dialogue was not always manifest in practical action. One significant consequence of not using dialogue was that information with impact on organisational efficiency and finances was communicated upwards in the management system.

The Impact of Cognitive Style on Social Networks in On-Line Discussions

ERIC Educational Resources Information Center

Jablokow, Kathryn; Vercellone-Smith, Pamela

2011-01-01

With the rise of e-Learning in engineering education, understanding the impact of individual differences on the ways students communicate and collaborate on-line has become increasingly important. The research described here investigates the influence of cognitive style on the interactions within student social networks in an on-line learning…

Numerical modelling of multimode fibre-optic communication lines

DOE Office of Scientific and Technical Information (OSTI.GOV)

Sidelnikov, O S; Fedoruk, M P; Sygletos, S

The results of numerical modelling of nonlinear propagation of an optical signal in multimode fibres with a small differential group delay are presented. It is found that the dependence of the error vector magnitude (EVM) on the differential group delay can be reduced by increasing the number of ADC samples per symbol in the numerical implementation of the differential group delay compensation algorithm in the receiver. The possibility of using multimode fibres with a small differential group delay for data transmission in modern digital communication systems is demonstrated. It is shown that with increasing number of modes the strong couplingmore » regime provides a lower EVM level than the weak coupling one. (fibre-optic communication lines)« less

Recent progress of quantum communication in China (Conference Presentation)

NASA Astrophysics Data System (ADS)

Zhang, Qiang

2016-04-01

Quantum communication, based on the quantum physics, can provide information theoretical security. Building a global quantum network is one ultimate goal for the research of quantum information. Here, this talk will review the progress for quantum communication in China, including quantum key distribution over metropolitan area with untrustful relay, field test of quantum entanglement swapping over metropolitan network, the 2000 km quantum key distribution main trunk line, and satellite based quantum communication.

Semiannual Technical Summary, 1 April-30 September 1993

DTIC Science & Technology

1993-12-01

Hardware failure 11 Jul 2200 - Hardware failure 12 Jul - 0531 Hardware failure 12 Jul 0744 - 1307 Hardware service 1OAug 0821 - 1514 Line failure 29 Aug...1000 - Line failure 30 Aug - 1211 Line failure 08 Sep 1518 - Line failure 09 Sep - 0428 Line failure 10 Sep 0821 - 1030 Hardware failure 18 Sep 0817...reair. Between 8 September 1306 hrs and 9 September 0428 hre all communications systems wene affected (13.5 hrs). Reduced 01B performance started 10

Influence of non-line of sight luminescent emitters in visible light communication systems

NASA Astrophysics Data System (ADS)

Ghorai, Anaranya; Walvekar, Pratik; Nayak, Shreyas; Narayan, K. S.

2018-01-01

We introduce and demonstrate concepts which utilize the non-line of sight fraction of light incident on a detector assembly in a visible-light communication (VLC) system. In addition to ambient light, realistic enclosures where VLC is implemented consist of a sizable fraction of scattered and reflected light. We present results of VLC systems with detectors responding to contributions from the light source scattered off a surface embedded with fluorescent and phosphorescent emitters besides the direct line of sight signal. Contribution from the emitters takes a form of discernible fluctuations in the detector signal. The implication of our results from noise analysis of these fluctuations indicates the possibility of utilizing smart coatings to further tailor VLC capabilities.

RF model of the distribution system as a communication channel, phase 2. Volume 2: Task reports

NASA Technical Reports Server (NTRS)

Rustay, R. C.; Gajjar, J. T.; Rankin, R. W.; Wentz, R. C.; Wooding, R.

1982-01-01

Based on the established feasibility of predicting, via a model, the propagation of Power Line Frequency on radial type distribution feeders, verification studies comparing model predictions against measurements were undertaken using more complicated feeder circuits and situations. Detailed accounts of the major tasks are presented. These include: (1) verification of model; (2) extension, implementation, and verification of perturbation theory; (3) parameter sensitivity; (4) transformer modeling; and (5) compensation of power distribution systems for enhancement of power line carrier communication reliability.

The US Strategic Logistics Plan In The CBI Theater And Its Contemporary Significance

DTIC Science & Technology

2016-05-26

SUBJECT TERMS CBI Theater, Logistics, Lend-Lease Aid, LOC Network, Ledo Road, Burma Road, The Hump, AMMISCA 16. SECURITY CLASSIFICATION OF: a...19 Stilwell versus Chennault………………………………………………….………………………….......26 Efficiency of the LOC Network... LOC Line of Communication NATO North Atlantic Treaty Organization SLOC Sea Line of Communication SME Subject Matter Expert SOS Services of Supply SPOD

Space Shuttle Communications Coverage Analysis for Thermal Tile Inspection

NASA Technical Reports Server (NTRS)

Kroll, Quin D.; Hwu, Shian U.; Upanavage, Matthew; Boster, John P.; Chavez, Mark A.

2009-01-01

The space shuttle ultra-high frequency Space-to-Space Communication System has to provide adequate communication coverage for astronauts who are performing thermal tile inspection and repair on the underside of the space shuttle orbiter (SSO). Careful planning and quantitative assessment are necessary to ensure successful system operations and mission safety in this work environment. This study assesses communication systems performance for astronauts who are working in the underside, non-line-of-sight shadow region on the space shuttle. All of the space shuttle and International Space Station (ISS) transmitting antennas are blocked by the SSO structure. To ensure communication coverage at planned inspection worksites, the signal strength and link margin between the SSO/ISS antennas and the extravehicular activity astronauts, whose line-of-sight is blocked by vehicle structure, was analyzed. Investigations were performed using rigorous computational electromagnetic modeling techniques. Signal strength was obtained by computing the reflected and diffracted fields along the signal propagation paths between transmitting and receiving antennas. Radio frequency (RF) coverage was determined for thermal tile inspection and repair missions using the results of this computation. Analysis results from this paper are important in formulating the limits on reliable communication range and RF coverage at planned underside inspection and repair worksites.

Using health communication best practices to develop a web-based provider-patient communication aid: the CONNECT study.

PubMed

Fleisher, Linda; Buzaglo, Joanne; Collins, Michael; Millard, Jennifer; Miller, Suzanne M; Egleston, Brian L; Solarino, Nicholas; Trinastic, Jonathan; Cegala, Donald J; Benson, Al B; Schulman, Kevin A; Weinfurt, Kevin P; Sulmasy, Daniel; Diefenbach, Michael A; Meropol, Neal J

2008-06-01

Although there is broad consensus that careful content vetting and user testing is important in the development of technology-based educational interventions, often these steps are overlooked. This paper highlights the development of a theory-guided, web-based communication aid (CONNECT), designed to facilitate treatment decision-making among patients with advanced cancer. The communication aid included an on-line survey, patient skills training module and an automated physician report. Development steps included: (1) evidence-based content development; (2) usability testing; (3) pilot testing; and (4) patient utilization and satisfaction. Usability testing identified some confusing directions and navigation for the on-line survey and validated the relevance of the "patient testimonials" in the skills module. Preliminary satisfaction from the implementation of the communication aid showed that 66% found the survey length reasonable and 70% found it helpful in talking with the physician. Seventy percent reported the skills module helpful and about half found it affected the consultation. Designing patient education interventions for translation into practice requires the integration of health communication best practice including user feedback along the developmental process. This developmental process can be translated to a broad array of community-based patient and provider educational interventions.

Pulse Transmission Over Dispersive Waveguides in Railroad Communications : Software for Computer Simulation

DOT National Transportation Integrated Search

1973-07-01

Waveguides and transmission lines employed in train communications exhibit dispersion, which is caused by (a) their inherent properties and (b) the cumulative effect of discontinuities at joints. To provide the means to evaluate such waveguides, seve...

Applying Common Latino Magazine Cover Line Themes to Health Communications

ERIC Educational Resources Information Center

Delaney, Colleen L.; Barrios, Pamela; Lozada, Carolina; Soto-Balbuena, Kenlly; Martin-Biggers, Jennifer; Byrd-Bredbenner, Carol

2016-01-01

This study aimed to describe strategies used in magazine cover lines to capture the attention of Latino consumers. A content analysis of cover lines (n = 581) from six top-selling Latino women's and parenting magazines (n = 217 issues) sold in the United States identified 12 common themes: great/inspiring, beauty/health, bad/negative,…

Intramuscular communicating branches in the flexor digitorum profundus: dissection and Sihler's staining.

PubMed

Won, Sung-Yoon; Choi, Da-Yae; Lee, Jae-Gi; Yoon, Kwan-Hyun; Kwak, Hyun-Ho; Hu, Kyung-Seok; Kim, Hee-Jin

2010-03-01

This study was designed to clarify the anatomy of the intramuscular communicating branch (ICb) between the median and ulnar nerves in the flexor digitorum profundus (FDP), and morphologically demonstrate the location of connection. Twenty Korean cadavers were dissected and a further 8 were subjected to modified Sihler's staining to investigate the pattern of innervation of the ICb and the location of its communicating points in muscle. The median and ulnar nerves divided into small branches before entering FDP muscle. Of these small branches, one or two met inside the muscle. This communicating pattern could be classified into three types: type I, communicating branches in both the proximal and distal regions; type II, at least one communicating branch in the proximal region; type III, at least one communicating branch in the distal region. Of 20 dissected specimens, no case of type I was observed, but 3 cases of type II and 15 cases of type III were found. No ICbs at all were found in two of the dissected specimens. In eight stained specimens, one was classified as type I, two as type II, and five as type III. The proximal communicating branches were located at 34.1% from the interepicondylar line, inside the third muscle bundle. The distal communicating branches were located at 66.0% from the interepicondylar line, between third and fourth muscle bundles. These findings could provide critical anatomical information regarding the nerve distribution of FDP focused on the ICbs.

Improving health care professionals' feedback on communication skills: development of an on-line resource.

PubMed

Harrison, Gill; Hayden, Sheila; Cook, Viv; Cushing, Annie

2012-09-01

This project aimed to develop an open-access on-line resource to assist health care professionals in providing effective feedback on patient-centered clinical and communication skills. The collaborative nature of the development of this learning resource is outlined and evaluation of its use is discussed. An inter-professional team of teaching staff from two London Universities employed a researcher to interview experienced clinical and academic health care professionals and gather examples of difficult feedback situations. Material was used to develop short video clips illustrating some common challenges in giving feedback on clinical and communication skills. Initial evaluation following use of the scenarios in workshops was undertaken by means of a "talking wall" technique. Evaluation indicated that the resource enhanced the learning experience by providing realistic and challenging scenarios to focus discussion. Inter-professional working and piloting the use of the video scenarios in workshops enabled the improvement and refinement of an on-line staff development resource on feedback. The on-line resource is now available as an open access learning tool, with eight scenarios and guidelines for providing effective feedback in the academic or clinical setting. It can be used for self-study or as part of a group training session. Copyright © 2012 Elsevier Ireland Ltd. All rights reserved.

29 CFR 1926.954 - Grounding for protection of employees.

Code of Federal Regulations, 2012 CFR

2012-07-01

... the new lines or equipment. (c) Communication conductors. Bare wire communication conductors on power... have a resistance to ground low enough to remove the danger of harm to personnel or permit prompt... shall have a minimum conductance of No. 2 AWG copper. ...

29 CFR 1926.954 - Grounding for protection of employees.

Code of Federal Regulations, 2011 CFR

2011-07-01

... the new lines or equipment. (c) Communication conductors. Bare wire communication conductors on power... have a resistance to ground low enough to remove the danger of harm to personnel or permit prompt... shall have a minimum conductance of No. 2 AWG copper. ...

29 CFR 1926.954 - Grounding for protection of employees.

Code of Federal Regulations, 2013 CFR

2013-07-01

... the new lines or equipment. (c) Communication conductors. Bare wire communication conductors on power... have a resistance to ground low enough to remove the danger of harm to personnel or permit prompt... shall have a minimum conductance of No. 2 AWG copper. ...

29 CFR 1926.954 - Grounding for protection of employees.

Code of Federal Regulations, 2010 CFR

2010-07-01

... the new lines or equipment. (c) Communication conductors. Bare wire communication conductors on power... have a resistance to ground low enough to remove the danger of harm to personnel or permit prompt... shall have a minimum conductance of No. 2 AWG copper. ...

29 CFR 1926.954 - Grounding for protection of employees.

Code of Federal Regulations, 2014 CFR

2014-07-01

... the new lines or equipment. (c) Communication conductors. Bare wire communication conductors on power... have a resistance to ground low enough to remove the danger of harm to personnel or permit prompt... shall have a minimum conductance of No. 2 AWG copper. ...

The Malvinas War from the Argentinian Viewpoint

DTIC Science & Technology

1988-05-01

commercial concern is The Falkland Islands Company. This company owns 80 per cent of the total economic product. Communications are a considerable problem...krill also exists. Additionally, the islands’ strategic position is critical to control of the South Atlantic, with many commercial lines of communication ...the traditional 18 rivalry between services, and the poor communications network to receive orders from the decision centers located on the conti

Are On-Line Data Bases in Your Library's Future?

ERIC Educational Resources Information Center

Deacon, Jim

1983-01-01

THE FOLLOWING IS THE FULL TEXT OF THIS DOCUMENT: Today there are over 900 on-line data banks available for public access. Most microcomputers can use them through the aid of a modem and communication program. Major public information utilities that offer access to these on-line data bases are growing and expanding. The Source, a data base utility…

Graphene photodetectors with a bandwidth  >76 GHz fabricated in a 6″ wafer process line

NASA Astrophysics Data System (ADS)

Schall, Daniel; Porschatis, Caroline; Otto, Martin; Neumaier, Daniel

2017-03-01

In recent years, the data traffic has grown exponentially and the forecasts indicate a huge market that could be addressed by communication infrastructure and service providers. However, the processing capacity, space, and energy consumption of the available technology is a serious bottleneck for the exploitation of these markets. Chip-integrated optical communication systems hold the promise of significantly improving these issues related to the current technology. At the moment, the answer to the question which material is best suited for ultrafast chip integrated communication systems is still open. In this manuscript we report on ultrafast graphene photodetectors with a bandwidth of more than 76 GHz well suitable for communication links faster than 100 GBit s-1 per channel. We extract an upper value of 7.2 ps for the timescale in which the bolometric photoresponse in graphene is generated. The photodetectors were fabricated on 6″ silicon-on-insulator wafers in a semiconductor pilot line, demonstrating the scalable fabrication of high-performance graphene based devices.

The SUNY biomedical communication network: six years of progress in on-line bibiographic retrieval.

PubMed Central

Egeland, J

1975-01-01

The SUNY Biomedical Communication Network became operational in 1968 as the first on-line bibliograhpic retrieval service for biomedical literature. Since 1968, the SUNY/BCN has grown in size from nine to thirty-two medical and university libraries and has expanded its data base coverage to include the ERIC and Psychological Abstracts data bases in addition to the full ten-year retrospective MEDLARS data base. Aside from the continuous provision of an on-line searching system, the SUNY experience over the last six years has yielded valuable information in the following areas of: (1) monograph indexing and retrieval, (2) shared cataloging, (3) user interaction and education in on-line systems, and (4) member participation in Network policy-making processes. The continued success of the SUNY/BCN is evidence that it is possible to provide a high quality on-line bibliographic retrieval system at cost to academic institutions. SUNY's success in this effort is the result of centralized resource sharing and effective regional networking, combined with thoughtful planning by user advisory committees. PMID:1173557

Practical science communication strategies for graduate students.

PubMed

Kuehne, Lauren M; Twardochleb, Laura A; Fritschie, Keith J; Mims, Meryl C; Lawrence, David J; Gibson, Polly P; Stewart-Koster, Ben; Olden, Julian D

2014-10-01

Development of skills in science communication is a well-acknowledged gap in graduate training, but the constraints that accompany research (limited time, resources, and knowledge of opportunities) make it challenging to acquire these proficiencies. Furthermore, advisors and institutions may find it difficult to support graduate students adequately in these efforts. The result is fewer career and societal benefits because students have not learned to communicate research effectively beyond their scientific peers. To help overcome these hurdles, we developed a practical approach to incorporating broad science communication into any graduate-school time line. The approach consists of a portfolio approach that organizes outreach activities along a time line of planned graduate studies. To help design the portfolio, we mapped available science communication tools according to 5 core skills essential to most scientific careers: writing, public speaking, leadership, project management, and teaching. This helps graduate students consider the diversity of communication tools based on their desired skills, time constraints, barriers to entry, target audiences, and personal and societal communication goals. By designing a portfolio with an advisor's input, guidance, and approval, graduate students can gauge how much outreach is appropriate given their other commitments to teaching, research, and classes. The student benefits from the advisors' experience and mentorship, promotes the group's research, and establishes a track record of engagement. When graduate student participation in science communication is discussed, it is often recommended that institutions offer or require more training in communication, project management, and leadership. We suggest that graduate students can also adopt a do-it-yourself approach that includes determining students' own outreach objectives and time constraints and communicating these with their advisor. By doing so we hope students will help create a new culture of science communication in graduate student education. © 2014 Society for Conservation Biology.

Robbing Peter...Balancing Collection Development and Reference Responsibilities.

ERIC Educational Resources Information Center

Null, David G.

1988-01-01

Examines problems of librarians responsible for both collection development and reference services, including time demands, unclear supervisory lines, and misunderstanding of collection development. The discussion includes suggestions for improving this situation, e.g., formal reporting lines for both areas, increased communication among…

Power Line Communication (PLC) in Space - Current Status and Outlook

NASA Astrophysics Data System (ADS)

Wolf, J.

2012-05-01

The Power Line Communication (PLC) technology as known from various terrestrial applications, e.g. in building automation, in the automotive sector and on aircraft, appears to be a promising technology for the use on spacecraft. Starting from a critical overview on existing terrestrial PLC applications with their pros and cons, the paper gives a motivation for the introduction of the PLC technology on spacecraft, discusses the potential areas where it can be applied and is highlighting the potential problem areas. A short overview of on-going ESA PLC activities is provided and an outlook is given.

Evaluate the Usability of the Mobile Instant Messaging Software in the Elderly.

PubMed

Wen, Tzu-Ning; Cheng, Po-Liang; Chang, Po-Lun

2017-01-01

Instant messaging (IM) is one kind of online chat that provides real-time text transmission over the Internet. It becomes one of the popular communication tools. Even it is currnetly an era of smartphones, it still a great challenge to teach and promote the elderly to use smart phone. Besides, the acceptance of the elderly to use IM remains unknown. This study describes the usability and evaluates the acceptance of the IM in the elderly, who use the smartphone for the first time. This study is a quasi-experimental design study. The study period started from October, 2012 to December, 2013. There were totally 41 elderly recruited in the study. All of them were the first time to use LINE app on the smartphones. The usability was evaluated by using the Technology Acceptance Model which consisted of four constructs: cognitive usability, cognitive ease of use, attitude and willingness to use. Overall, the elderly had the best "attitude" for LINE APP communication software, with the highest rating averaging 4.07 points on four constructs, followed by an average of 4 points on "cognitive usefulness". The socres of "cognitive ease of use" and "willingness to use" scores were equal which are an average score of 3.86. It can be interpreted that (1) the elders thought that the LINE APP as an excellent communication tool for them; (2) they found the software is useful (3) it was convenient for them to communicate. However, it was necessary to additionally assist and explain the certain functions such as the options. It would play a great role in the "willingness to use". The positive acceptance of LINE APP in elderly refer to the probable similar acceptance for them to use other communication software. Encouraging the willingness the elderly to explore more technology products and understanding their behavior will be the basic knowledge to develop further software.

11 CFR 100.28 - Telephone bank (2 U.S.C. 431(24)).

Code of Federal Regulations, 2010 CFR

2010-01-01

... telephone calls of an identical or substantially similar nature within any 30-day period. A telephone bank does not include electronic mail or Internet communications transmitted over telephone lines. For purposes of this section, substantially similar includes communications that include substantially the same...

Communication Supports in Residential Services for People with an Intellectual Disability

ERIC Educational Resources Information Center

Dalton, Caroline; Sweeney, John

2013-01-01

This study explores front-line staff knowledge and perceptions of how people with intellectual disability residing in residential services are supported to communicate effectively. Participants ("n" = 138) completed a self-report questionnaire adapted from an instrument developed by DeSimone & Cascella (2005) "Journal of…

ANAMOL: A Creative Experience Using Communications Technology.

ERIC Educational Resources Information Center

Marr, Beth

1999-01-01

The Adult Numeracy and Mathematics On-Line (ANAMOL) project investigated the use of online technology as a medium for professional discussion, networking, and collaboration among a small group of isolated adult numeracy practitioners in Australia. After investigation of several methods of online communication, freeware was selected because, in…

Interlibrary Loan Communications Subsystem: Users Manual.

ERIC Educational Resources Information Center

OCLC Online Computer Library Center, Inc., Dublin, OH.

The OCLC Interlibrary Loan (ILL) Communications Subsystem provides participating libraries with on-line control of ILL transactions. This user manual includes a glossary of terms related to the procedures in using the system. Sections describe computer entry, searching, loan request form, loan response form, ILL procedures, the special message…

Channel Modelling and Performance of Non-Line-of-Sight Ultraviolet Scattering Communications

DTIC Science & Technology

2012-01-01

Avalanche photodiode (APD) detectors are also rapidly being developed [6, 7]. These device advances have inspired recent research in LED-based short...response and path loss results for outdoor NLOS UV communication channels in Section 3. The impulse response modelling describes UV pulse broadening via...Both the impulse response and path loss are critical to communication system design and performance assessment. Although pulse broadening creates inter

Line of sight pointing technology for laser communication system between aircrafts

NASA Astrophysics Data System (ADS)

Zhao, Xin; Liu, Yunqing; Song, Yansong

2017-12-01

In space optical communications, it is important to obtain the most efficient performance of line of sight (LOS) pointing system. The errors of position (latitude, longitude, and altitude), attitude angles (pitch, yaw, and roll), and installation angle among a different coordinates system are usually ineluctable when assembling and running an aircraft optical communication terminal. These errors would lead to pointing errors and make it difficult for the LOS system to point to its terminal to establish a communication link. The LOS pointing technology of an aircraft optical communication system has been researched using a transformation matrix between the coordinate systems of two aircraft terminals. A method of LOS calibration has been proposed to reduce the pointing error. In a flight test, a successful 144-km link was established between two aircrafts. The position and attitude angles of the aircraft have been obtained to calculate the pointing angle in azimuth and elevation provided by using a double-antenna GPS/INS system. The size of the field of uncertainty (FOU) and the pointing accuracy are analyzed based on error theory, and it has been also measured using an observation camera installed next to the optical LOS. Our results show that the FOU of aircraft optical communications is 10 mrad without a filter, which is the foundation to acquisition strategy and scanning time.

Non-line-of-sight (NLOS), secure, low-probability of intercept (LPI), antijam (AJ), high frequency (HF), real time video communication system

DOE Office of Scientific and Technical Information (OSTI.GOV)

Lupinetti, F.

1988-01-01

This paper outlines a video communication system capable of non-line-of-sight (NLOS), secure, low-probability of intercept (LPI), antijam, real time transmission and reception of video information in a tactical enviroment. An introduction to a class of ternary PN sequences is presented to familiarize the reader with yet another avenue for spreading and despreading baseband information. The use of the high frequency (HF) band (1.5 to 30 MHz) for real time video transmission is suggested to allow NLOS communication. The spreading of the baseband information by means of multiple nontrivially different ternary pseudonoise (PN) sequence is used in order to assure encryptionmore » of the signal, enhanced security, a good degree of LPI, and good antijam features. 18 refs., 3 figs., 1 tab.« less

Distributed On-line Monitoring System Based on Modem and Public Phone Net

NASA Astrophysics Data System (ADS)

Chen, Dandan; Zhang, Qiushi; Li, Guiru

In order to solve the monitoring problem of urban sewage disposal, a distributed on-line monitoring system is proposed. By introducing dial-up communication technology based on Modem, the serial communication program can rationally solve the information transmission problem between master station and slave station. The realization of serial communication program is based on the MSComm control of C++ Builder 6.0.The software includes real-time data operation part and history data handling part, which using Microsoft SQL Server 2000 for database, and C++ Builder6.0 for user interface. The monitoring center displays a user interface with alarm information of over-standard data and real-time curve. Practical application shows that the system has successfully accomplished the real-time data acquisition from data gather station, and stored them in the terminal database.

47 CFR 15.601 - Scope.

Code of Federal Regulations, 2010 CFR

2010-10-01

... 47 Telecommunication 1 2010-10-01 2010-10-01 false Scope. 15.601 Section 15.601 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL RADIO FREQUENCY DEVICES Access Broadband Over Power Line (Access... (Access BPL) devices operating in the 1.705-80 MHz band over medium or low voltage lines. ...

47 CFR 69.407 - Revenue accounting expenses in Account 6620.

Code of Federal Regulations, 2010 CFR

2010-10-01

....407 Section 69.407 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) COMMON CARRIER... billings shall be assigned to the Common Line element. (b) Revenue Accounting Expenses that are...'s carrier access elements except the Common Line element. Such expenses shall be apportioned in the...

Circuit for Communication Over Power Lines

NASA Technical Reports Server (NTRS)

Krasowski, Michael J.; Prokop, Normal F.; Greer, Lawrence C., III; Nappier, Jennifer

2011-01-01

Many distributed systems share common sensors and instruments along with a common power line supplying current to the system. A communication technique and circuit has been developed that allows for the simple inclusion of an instrument, sensor, or actuator node within any system containing a common power bus. Wherever power is available, a node can be added, which can then draw power for itself, its associated sensors, and actuators from the power bus all while communicating with other nodes on the power bus. The technique modulates a DC power bus through capacitive coupling using on-off keying (OOK), and receives and demodulates the signal from the DC power bus through the same capacitive coupling. The circuit acts as serial modem for the physical power line communication. The circuit and technique can be made of commercially available components or included in an application specific integrated circuit (ASIC) design, which allows for the circuit to be included in current designs with additional circuitry or embedded into new designs. This device and technique moves computational, sensing, and actuation abilities closer to the source, and allows for the networking of multiple similar nodes to each other and to a central processor. This technique also allows for reconfigurable systems by adding or removing nodes at any time. It can do so using nothing more than the in situ power wiring of the system.

71-Mbit/s ultraviolet-B LED communication link based on 8-QAM-OFDM modulation.

PubMed

Sun, Xiaobin; Zhang, Zhenyu; Chaaban, Anas; Ng, Tien Khee; Shen, Chao; Chen, Rui; Yan, Jianchang; Sun, Haiding; Li, Xiaohang; Wang, Junxi; Li, Jinmin; Alouini, Mohamed-Slim; Ooi, Boon S

2017-09-18

A demonstration of ultraviolet-B (UVB) communication link is implemented utilizing quadrature amplitude modulation (QAM) orthogonal frequency-division multiplexing (OFDM). The demonstration is based on a 294-nm UVB-light-emitting-diode (UVB-LED) with a full-width at half-maximum (FWHM) of 9 nm and light output power of 190 μW, at 7 V, with a special silica gel lens on top of it. A -3-dB bandwidth of 29 MHz was measured and a high-speed near-solar-blind communication link with a data rate of 71 Mbit/s was achieved using 8-QAM-OFDM at perfect alignment. 23.6 Mbit/s using 2-QAM-OFDM when the angle subtended by the pointing directions of the UVB-LED and photodetector (PD) is 12 degrees, thus establishing a diffuse-line-of-sight (LOS) link. The measured bit-error rate (BER) of 2.8 ×10 -4 and 2.4 ×10 -4 , respectively, are well below the forward error correction (FEC) criterion of 3.8 ×10 -3 . The demonstrated high data-rate OFDM-based UVB communication link paves the way for realizing high-speed non-line-of-sight free-space optical communications.

7 CFR 1755.397 - RUS performance specification for line concentrators.

Code of Federal Regulations, 2014 CFR

2014-01-01

... variation of ±1.5 percent: Low group frequencies (Hz) High group frequencies (Hz) 1209 1336 1477 1633 697 1... for Electrical Purposes. (ii) [Reserved] (5) Bell Communications Research (Bellcore) standards are... System and a Local Digital Switch. (ii) Bell Communications Research (Bellcore) document TR-TSY-000057...

7 CFR 1755.397 - RUS performance specification for line concentrators.

Code of Federal Regulations, 2012 CFR

2012-01-01

... variation of ±1.5 percent: Low group frequencies (Hz) High group frequencies (Hz) 1209 1336 1477 1633 697 1... for Electrical Purposes. (ii) [Reserved] (5) Bell Communications Research (Bellcore) standards are... System and a Local Digital Switch. (ii) Bell Communications Research (Bellcore) document TR-TSY-000057...

7 CFR 1755.397 - RUS performance specification for line concentrators.

Code of Federal Regulations, 2011 CFR

2011-01-01

... variation of ±1.5 percent: Low group frequencies (Hz) High group frequencies (Hz) 1209 1336 1477 1633 697 1... for Electrical Purposes. (ii) [Reserved] (5) Bell Communications Research (Bellcore) standards are... System and a Local Digital Switch. (ii) Bell Communications Research (Bellcore) document TR-TSY-000057...

7 CFR 1755.397 - RUS performance specification for line concentrators.

Code of Federal Regulations, 2013 CFR

2013-01-01

... variation of ±1.5 percent: Low group frequencies (Hz) High group frequencies (Hz) 1209 1336 1477 1633 697 1... for Electrical Purposes. (ii) [Reserved] (5) Bell Communications Research (Bellcore) standards are... System and a Local Digital Switch. (ii) Bell Communications Research (Bellcore) document TR-TSY-000057...

Studying the Effectiveness of Multi-User Immersive Environments for Collaborative Evaluation Tasks

ERIC Educational Resources Information Center

Lorenzo, Carlos-Miguel; Sicilia, Miguel Angel; Sanchez, Salvador

2012-01-01

Massively Multiuser On-line Learning (MMOL) Platforms, often called "virtual learning worlds", constitute a still unexplored context for communication-enhanced learning, where synchronous communication skills in an explicit social setting enhance the potential of effective collaboration. In this paper, we report on an experimental study of…

Internet and Information Control: The Case of China.

ERIC Educational Resources Information Center

Xiaoming, Hao; Zhang, Kewen; Yu, Huang

1996-01-01

Examines the potential impact of computer-mediated communication (CMC) on government controls of information in China. Examines the current development of CMC in China; challenges posed by new media technologies to government information control; and the current policy of the Chinese government towards on-line communication and its implications.…

The Effects of Soviet Army Communications Jamming on the AIM Division Signal Battalion.

DTIC Science & Technology

1980-06-06

Mass ". Antenna Antenn Figure 2-16 This explains why tactical line-of-site communication systems have installation difficulties when deployed in rugged...vertically polarized loop and adcock type antennas. While these antennas are especially reliable when identifing the azimuth of vertically polarized signal

7 CFR 1724.54 - Requirements for RUS approval of plans and specifications.

Code of Federal Regulations, 2012 CFR

2012-01-01

... specifications for transmission construction projects which are not based on RUS approved line design data or do...) Communications and control facilities. (1) This paragraph (g) covers microwave and powerline carrier communications systems, load control, and supervisory control and data acquisition (SCADA) systems. (2) The...

7 CFR 1724.54 - Requirements for RUS approval of plans and specifications.

Code of Federal Regulations, 2014 CFR

2014-01-01

... specifications for transmission construction projects which are not based on RUS approved line design data or do...) Communications and control facilities. (1) This paragraph (g) covers microwave and powerline carrier communications systems, load control, and supervisory control and data acquisition (SCADA) systems. (2) The...

7 CFR 1724.54 - Requirements for RUS approval of plans and specifications.

Code of Federal Regulations, 2013 CFR

2013-01-01

... specifications for transmission construction projects which are not based on RUS approved line design data or do...) Communications and control facilities. (1) This paragraph (g) covers microwave and powerline carrier communications systems, load control, and supervisory control and data acquisition (SCADA) systems. (2) The...

Polish Teenage Students' Willingness to Engage in On-Line Intercultural Interactions

ERIC Educational Resources Information Center

Wach, Aleksandra

2013-01-01

Computer-based technologies, including various forms of computer-mediated communication (CMC), provide L2 users with opportunities to engage in intercultural interactions which may promote the development of their intercultural communicative competence. The article reports the findings of a study that investigated how beyond-the-classroom…

When a Crisis Occurs: A Trustee's Perspective.

ERIC Educational Resources Information Center

Kenney, Phyllis Gutierrez

1997-01-01

Argues that, although crises are unavoidable, they can be planned for and that there should be a crisis management model for each situation. Discusses components of an effective crisis management plan, including clear lines of governance, trust, and communication between boards and the president and effective communication with the media and…

Communicating for Safety's Sake

ERIC Educational Resources Information Center

Wiesner, Robert

2005-01-01

No community is safe until every member takes responsibility for the community's collective safety. College communities are no different from families, towns and businesses in that respect. Getting everyone to accept responsibility is a challenge and skilled communication is an important component of the solution. As part of the front line,…

Life on the line: the therapeutic potentials of computer-mediated conversation.

PubMed

Miller, J K; Gergen, K J

1998-04-01

In what ways are computer networking practices comparable to face-to-face therapy? With the exponential increase in computer-mediated communication and the increasing numbers of people joining topically based computer networks, the potential for grass-roots therapeutic (or antitherapeutic) interchange is greatly augmented. Here we report the results of research into exchanges on an electronic bulletin board devoted to the topic of suicide. Over an 11-month period participants offered each other valuable resources in terms of validation of experience, sympathy, acceptance, and encouragement. They also asked provocative questions and furnished broad-ranging advice. Hostile entries were rare. However, there were few communiques that parallel the change-inducing practices more frequent within many therapeutic settings. In effect, on-line dialogues seemed more sustaining than transforming. Further limits and potentials of on-line communication are explored.

Fiber-laser frequency combs for the generation of tunable single-frequency laser lines, mm- and THz-waves and sinc-shaped Nyquist pulses

NASA Astrophysics Data System (ADS)

Schneider, Thomas

2015-03-01

High-quality frequency comb sources like femtosecond-lasers have revolutionized the metrology of fundamental physical constants. The generated comb consists of frequency lines with an equidistant separation over a bandwidth of several THz. This bandwidth can be broadened further to a super-continuum of more than an octave through propagation in nonlinear media. The frequency separation between the lines is defined by the repetition rate and the width of each comb line can be below 1 Hz, even without external stabilization. By extracting just one of these lines, an ultra-narrow linewidth, tunable laser line for applications in communications and spectroscopy can be generated. If two lines are extracted, the superposition of these lines in an appropriate photo-mixer produces high-quality millimeter- and THz-waves. The extraction of several lines can be used for the creation of almost-ideally sinc-shaped Nyquist pulses, which enable optical communications with the maximum-possible baud rate. Especially combs generated by low-cost, small-footprint fs-fiber lasers are very promising. However due to the resonator length, the comb frequencies have a typical separation of 80 - 100 MHz, far too narrow for the selection of single tones with standard optical filters. Here the extraction of single lines of an fs-fiber laser by polarization pulling assisted stimulated Brillouin scattering is presented. The application of these extracted lines as ultra-narrow, stable and tunable laser lines, for the generation of very high-quality mm and THz-waves with an ultra-narrow linewidth and phase noise and for the generation of sinc-shaped Nyquist pulses with arbitrary bandwidth and repetition rate is discussed.

On a two-pass scheme without a faraday mirror for free-space relativistic quantum cryptography

DOE Office of Scientific and Technical Information (OSTI.GOV)

Kravtsov, K. S.; Radchenko, I. V.; Korol'kov, A. V.

2013-05-15

The stability of destructive interference independent of the input polarization and the state of a quantum communication channel in fiber optic systems used in quantum cryptography plays a principal role in providing the security of communicated keys. A novel optical scheme is proposed that can be used both in relativistic quantum cryptography for communicating keys in open space and for communicating them over fiber optic lines. The scheme ensures stability of destructive interference and admits simple automatic balancing of a fiber interferometer.

47 CFR 63.701 - Contents of application.

Code of Federal Regulations, 2010 CFR

2010-10-01

... 47 Telecommunication 3 2010-10-01 2010-10-01 false Contents of application. 63.701 Section 63.701 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) COMMON CARRIER SERVICES (CONTINUED) EXTENSION OF LINES, NEW LINES, AND DISCONTINUANCE, REDUCTION, OUTAGE AND IMPAIRMENT OF SERVICE BY COMMON CARRIERS; AND GRANTS OF RECOGNIZED PRIVATE...

47 CFR 63.701 - Contents of application.

Code of Federal Regulations, 2011 CFR

2011-10-01

... 47 Telecommunication 3 2011-10-01 2011-10-01 false Contents of application. 63.701 Section 63.701 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) COMMON CARRIER SERVICES (CONTINUED) EXTENSION OF LINES, NEW LINES, AND DISCONTINUANCE, REDUCTION, OUTAGE AND IMPAIRMENT OF SERVICE BY COMMON CARRIERS; AND GRANTS OF RECOGNIZED PRIVATE...

Proceedings of the Annual Meeting of the Association for Education in Journalism and Mass Communication (82nd, New Orleans, Louisiana, August 3-8, 1999). International Communication, Part 1.

ERIC Educational Resources Information Center

Association for Education in Journalism and Mass Communication.

The International Communication, Part 1 section of the Proceedings contains the following 9 papers: "Chilean Conversations: On-line Forum Participants Discuss the Detention of Augusto Pinochet" (Eliza Tanner); "Media of the World and World of the Media: A Crossnational Study of the Ranking of the 'Top 10 World Events' from 1988 to…

Information-Velocity Metric for the Flow of Information through an Organization: Application to Decision Support

DTIC Science & Technology

2009-06-17

pyramid. Hh represents the amount of human-to- human communication that limits v(info). Hh represents a traditional but inefficient, unscalable, and...Equa- tion (20) weights evenly improved efficiency of sharing information (by moving away from tradi- tional human-to- human communication methods and...the right time. The second line of equation (20) implies that human-to- human communication methods are inefficient and unscalable. For example, an

Additive effects of growth promoting technologies on performance of grazing steers and economics of the wheat pasture enterprise.

PubMed

Beck, P; Hess, T; Hubbell, D; Hufstedler, G D; Fieser, B; Caldwell, J

2014-03-01

This research was designed to evaluate the effect of monensin (Elanco Animal Health, Greenfield, IN) supplementation via mineral or pressed protein block with or without a growth-promoting implant on performance of steers grazing wheat pasture in Arkansas over 2 yr. Preconditioned steers (n = 360, BW = 238 ± 5.1 kg) grazed 15 1.6-ha wheat pastures in the fall (n = 60 steers each fall, stocking rate of 2.5 steers/ha) or 30 0.8-ha wheat pastures in the spring (n = 120 steers each spring, stocking rate of 5 steers/ha). Steers in each pasture were given free-choice access to nonmedicated mineral (CNTRL; MoorMan's WeatherMaster Range Minerals A 646AAA; ADM Alliance Nutrition, Inc., Quincy, IL), or were supplemented with monensin (Elanco Animal Health, Greenfield, IN) via mineral containing 1.78 g monensin/kg (RMIN; MoorMan's Grower Mineral RU-1620 590AR; ADM Alliance Nutrition, Inc.), or pressed protein block containing 0.33 g monensin/kg (RBLCK; MoorMan's Mintrate Blonde Block RU; ADM Alliance Nutrition, Inc.). Additionally, one-half of the steers in each pasture were implanted (IMPL) with 40 mg trenbolone acetate and 8 mg estradiol (Component TE-G with Tylan; Elanco Animal Health). There was no interaction (P ≥ 0.71) between supplement treatment and growth-promoting implants, and ADG for RMIN and RBLCK were increased (P < 0.01) over CNTRL by 0.07 to 0.09 kg/d, respectively. Implanting steers with Component TE-G increased (P < 0.01) ADG by 0.14 kg/d. The combination of these growth-promoting technologies are a cost-effective means of increasing beef production by 22% without increasing level of supplementation or pasture acreage. Utilizing ionophores and implants together for wheat pasture stocker cattle decreased cost of gain by 26%. Utilizing both IMPL and monensin increased net return by $30 to $54/steer for RMIN or $18 to $43/steer for RBLCK compared with UNIMPL CNTRL at Low and High values of BW gain, respectively.

Simulation and Measurement of Medium-Frequency Signals Coupling From a Line to a Loop Antenna

PubMed Central

Damiano, Nicholas W.; Li, Jingcheng; Zhou, Chenming; Brocker, Donovan E.; Qin, Yifeng; Werner, Douglas H.; Werner, Pingjuan L.

2016-01-01

The underground-mining environment can affect radio-signal propagation in various ways. Understanding these effects is especially critical in evaluating communications systems used during normal mining operations and during mine emergencies. One of these types of communications systems relies on medium-frequency (MF) radio frequencies. This paper presents the simulation and measurement results of recent National Institute for Occupational Safety and Health (NIOSH) research aimed at investigating MF coupling between a transmission line (TL) and a loop antenna in an underground coal mine. Two different types of measurements were completed: 1) line-current distribution and 2) line-to-antenna coupling. Measurements were taken underground in an experimental coal mine and on a specially designed surface test area. The results of these tests are characterized by current along a TL and voltage induced in the loop from a line. This paper concludes with a discussion of issues for MF TLs. These include electromagnetic fields at the ends of the TL, connection of the ends of the TL, the effect of other conductors underground, and the proximity of coal or earth. These results could help operators by providing examples of these challenges that may be experienced underground and a method by which to measure voltage induced by a line. PMID:27784954

The effects of color cues on typically developing preschoolers' speed of locating a target line drawing: implications for augmentative and alternative communication display design.

PubMed

Thistle, Jennifer J; Wilkinson, Krista

2009-08-01

This research examined how the presence of color in relation to a target within an augmentative and alternative communication array influenced the speed with which typically developing preschoolers located a target line drawing. Fifteen children over the age of 4 years (from 4;2 [years;months] to 5;4) and 15 children under the age of 4 years (2;10-3;11) participated. Participants were asked to find a target line drawing of foods (e.g., banana and tomato) among an array of 12. The reaction time of locating the target was measured across 4 conditions in which the foreground color and the background color of the line drawing were manipulated. For all participants, line drawings featuring foreground color provided greater advantages in the speed of locating the target compared with drawings featuring only background color. Younger participants demonstrated faster reaction times when color was limited to the foreground. Clinicians should consider incorporating color in the foreground of the line drawing when constructing visual displays. Targets that contain only background color but no foreground color appear to have a negative effect on the speed with which younger children can locate a target. Further research is needed to determine the effects in children with disabilities.

Alternative Line Coding Scheme with Fixed Dimming for Visible Light Communication

NASA Astrophysics Data System (ADS)

Niaz, M. T.; Imdad, F.; Kim, H. S.

2017-01-01

An alternative line coding scheme called fixed-dimming on/off keying (FD-OOK) is proposed for visible-light communication (VLC). FD-OOK reduces the flickering caused by a VLC transmitter and can maintain a 50% dimming level. Simple encoder and decoder are proposed which generates codes where the number of bits representing one is same as the number of bits representing zero. By keeping the number of ones and zeros equal the change in the brightness of lighting may be minimized and kept constant at 50%, thereby reducing the flickering in VLC. The performance of FD-OOK is analysed with two parameters: the spectral efficiency and power requirement.

A communications model for an ISAS to NASA span link

NASA Technical Reports Server (NTRS)

Green, James L.; Mcguire, Robert E.; Lopez-Swafford, Brian

1987-01-01

The authors propose that an initial computer-to-computer communication link use the public packet switched networks (PPSN) Venus-P in Japan and TELENET in the U.S. When the traffic warrants it, this link would then be upgraded to a dedicated leased line that directly connects into the Space Physics Analysis Network (SPAN). The proposed system of hardware and software will easily support migration to such a dedicated link. It therefore provides a cost effective approach to the network problem. Once a dedicated line becomes operation it is suggested that the public networks link and continue to coexist, providing a backup capability.

Narrowband high temperature superconducting receiver for low frequency radio waves

DOEpatents

Reagor, David W.

2001-01-01

An underground communicating device has a low-noise SQUID using high temperature superconductor components connected to detect a modulated external magnetic flux for outputting a voltage signal spectrum that is related to the varying magnetic flux. A narrow bandwidth filter may be used to select a portion of the voltage signal spectrum that is relatively free of power line noise to output a relatively low noise output signal when operating in a portion of the electromagnetic spectra where such power line noise exists. A demodulator outputs a communication signal, which may be an FM signal, indicative of a modulation on the modulated external magnetic flux.

LIBRARY INFORMATION PROCESSING USING AN ON-LINE, REAL-TIME COMPUTER SYSTEM.

ERIC Educational Resources Information Center

HOLZBAUR, FREDERICK W.; FARRIS, EUGENE H.

DIRECT MAN-MACHINE COMMUNICATION IS NOW POSSIBLE THROUGH ON-LINE, REAL-TIME TYPEWRITER TERMINALS DIRECTLY CONNECTED TO COMPUTERS. THESE TERMINAL SYSTEMS PERMIT THE OPERATOR, WHETHER ORDER CLERK, CATALOGER, REFERENCE LIBRARIAN OR TYPIST, TO INTERACT WITH THE COMPUTER IN MANIPULATING DATA STORED WITHIN IT. THE IBM ADMINISTRATIVE TERMINAL SYSTEM…

Bridging the Digital Divide with Off-Line E-Learning

ERIC Educational Resources Information Center

Hillier, Mathew

2018-01-01

This paper explores a proposal for an off-line e-learning platform that will provide a bridge for digitally unconnected students and educators to join the contemporary information and communications technology (ICT) intensive world. Individual remote and unconnected learners face a chicken and egg problem for engagement with contemporary…

47 CFR 69.154 - Per-minute carrier common line charge.

Code of Federal Regulations, 2010 CFR

2010-10-01

... 47 Telecommunication 3 2010-10-01 2010-10-01 false Per-minute carrier common line charge. 69.154 Section 69.154 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) COMMON CARRIER SERVICES (CONTINUED) ACCESS CHARGES Computation of Charges for Price Cap Local Exchange Carriers § 69.154 Per-minute...

47 CFR 69.157 - Line port costs in excess of basic, analog service.

Code of Federal Regulations, 2010 CFR

2010-10-01

... 47 Telecommunication 3 2010-10-01 2010-10-01 false Line port costs in excess of basic, analog service. 69.157 Section 69.157 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) COMMON CARRIER SERVICES (CONTINUED) ACCESS CHARGES Computation of Charges for Price Cap Local Exchange Carriers...

47 CFR 54.902 - Calculation of Interstate Common Line Support for transferred exchanges.

Code of Federal Regulations, 2010 CFR

2010-10-01

... filed pursuant to § 54.903(a)(4) shall reflect the transfer of exchanges. All post-transaction... transfer of exchanges. All post-transaction Interstate Common Line Support shall be subject to true up by... for transferred exchanges. 54.902 Section 54.902 Telecommunication FEDERAL COMMUNICATIONS COMMISSION...

47 CFR 15.212 - Modular transmitters.

Code of Federal Regulations, 2013 CFR

2013-10-01

... 47 Telecommunication 1 2013-10-01 2013-10-01 false Modular transmitters. 15.212 Section 15.212 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL RADIO FREQUENCY DEVICES Intentional Radiators § 15.212... powered, it must comply with the AC line conducted requirements found in § 15.207. AC or DC power lines...

47 CFR 15.212 - Modular transmitters.

Code of Federal Regulations, 2010 CFR

2010-10-01

... 47 Telecommunication 1 2010-10-01 2010-10-01 false Modular transmitters. 15.212 Section 15.212 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL RADIO FREQUENCY DEVICES Intentional Radiators § 15.212... powered, it must comply with the AC line conducted requirements found in § 15.207. AC or DC power lines...

47 CFR 15.212 - Modular transmitters.

Code of Federal Regulations, 2011 CFR

2011-10-01

... 47 Telecommunication 1 2011-10-01 2011-10-01 false Modular transmitters. 15.212 Section 15.212 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL RADIO FREQUENCY DEVICES Intentional Radiators § 15.212... powered, it must comply with the AC line conducted requirements found in § 15.207. AC or DC power lines...

47 CFR 15.212 - Modular transmitters.

Code of Federal Regulations, 2012 CFR

2012-10-01

... 47 Telecommunication 1 2012-10-01 2012-10-01 false Modular transmitters. 15.212 Section 15.212 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL RADIO FREQUENCY DEVICES Intentional Radiators § 15.212... powered, it must comply with the AC line conducted requirements found in § 15.207. AC or DC power lines...

47 CFR 15.212 - Modular transmitters.

Code of Federal Regulations, 2014 CFR

2014-10-01

... 47 Telecommunication 1 2014-10-01 2014-10-01 false Modular transmitters. 15.212 Section 15.212 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL RADIO FREQUENCY DEVICES Intentional Radiators § 15.212... powered, it must comply with the AC line conducted requirements found in § 15.207. AC or DC power lines...

47 CFR 1.7001 - Scope and content of filed reports.

Code of Federal Regulations, 2010 CFR

2010-10-01

... Telecommunications Capability Data § 1.7001 Scope and content of filed reports. (a) Definitions. Terms used in this... services over their own facilities or over Unbundled Network Elements (UNEs), special access lines, and other leased lines and wireless channels that the entity obtains from a communications service provider...

Effects of the earthquake of March 27, 1964, on air and water transport, communications, and utilities systems in south-central Alaska: Chapter B in The Alaska earthquake, March 27, 1964: effects on transportation, communications, and utilities

USGS Publications Warehouse

Eckel, Edwin B.

1967-01-01

The earthquake of March 27, 1964, wrecked or severely hampered all forms of transportation, all utilities, and all communications systems over a very large part of south-central Alaska. Effects on air transportation were minor as compared to those on the water, highway, and railroad transport systems. A few planes were damaged or wrecked by seismic vibration or by flooding. Numerous airport facilities were damaged by vibration or by secondary effects of the earthquake, notably seismic sea and landslide-generated waves, tectonic subsidence, and compaction. Nearly all air facilities were partly or wholly operational within a few hours after the earthquake. The earthquake inflicted enormous damage on the shipping industry, which is indispensable to a State that imports fully 90 percent of its requirements—mostly by water—and whose largest single industry is fishing. Except for those of Anchorage, all port facilities in the earthquake-affected area were destroyed or made inoperable by submarine slides, waves, tectonic uplift, and fire. No large vessels were lost, but more than 200 smaller ones (mostly crab or salmon boats) were lost or severely damaged. Navigation aids were destroyed, and hitherto well-known waterways were greatly altered by uplift or subsidence. All these effects wrought far-reaching changes in the shipping economy of Alaska, many of them to its betterment. Virtually all utilities and communications in south-central Alaska were damaged or wrecked by the earthquake, but temporary repairs were effected in remarkably short times. Communications systems were silenced almost everywhere by loss of power or by downed lines; their place was quickly taken by a patchwork of self-powered radio transmitters. A complex power-generating system that served much of the stricken area from steam, diesel, and hydrogenerating plants was disrupted in many places by vibration damage to equipment and by broken transmission lines. Landslides in Anchorage broke gas-distribution lines in many places, but the main transmission line from the Kenai Peninsula was virtually undamaged. Petroleum supplies were disrupted, principally by breakage or loss of storage tanks caused by seismic vibration, slides, waves, and fire. Water-supply and sewer lines were also broken in many towns.

Distribution automation applications of fiber optics

NASA Technical Reports Server (NTRS)

Kirkham, Harold; Johnston, A.; Friend, H.

1989-01-01

Motivations for interest and research in distribution automation are discussed. The communication requirements of distribution automation are examined and shown to exceed the capabilities of power line carrier, radio, and telephone systems. A fiber optic based communication system is described that is co-located with the distribution system and that could satisfy the data rate and reliability requirements. A cost comparison shows that it could be constructed at a cost that is similar to that of a power line carrier system. The requirements for fiber optic sensors for distribution automation are discussed. The design of a data link suitable for optically-powered electronic sensing is presented. Empirical results are given. A modeling technique that was used to understand the reflections of guided light from a variety of surfaces is described. An optical position-indicator design is discussed. Systems aspects of distribution automation are discussed, in particular, the lack of interface, communications, and data standards. The economics of distribution automation are examined.

Path loss modeling and performance trade-off study for short-range non-line-of-sight ultraviolet communications.

PubMed

Chen, Gang; Xu, Zhengyuan; Ding, Haipeng; Sadler, Brian

2009-03-02

We consider outdoor non-line-of-sight deep ultraviolet (UV) solar blind communications at ranges up to 100 m, with different transmitter and receiver geometries. We propose an empirical channel path loss model, and fit the model based on extensive measurements. We observe range-dependent power decay with a power exponent that varies from 0.4 to 2.4 with varying geometry. We compare with the single scattering model, and show that the single scattering assumption leads to a model that is not accurate for small apex angles. Our model is then used to study fundamental communication system performance trade-offs among transmitted optical power, range, link geometry, data rate, and bit error rate. Both weak and strong solar background radiation scenarios are considered to bound detection performance. These results provide guidelines to system design.

Line-plane broadcasting in a data communications network of a parallel computer

DOEpatents

Archer, Charles J.; Berg, Jeremy E.; Blocksome, Michael A.; Smith, Brian E.

2010-06-08

Methods, apparatus, and products are disclosed for line-plane broadcasting in a data communications network of a parallel computer, the parallel computer comprising a plurality of compute nodes connected together through the network, the network optimized for point to point data communications and characterized by at least a first dimension, a second dimension, and a third dimension, that include: initiating, by a broadcasting compute node, a broadcast operation, including sending a message to all of the compute nodes along an axis of the first dimension for the network; sending, by each compute node along the axis of the first dimension, the message to all of the compute nodes along an axis of the second dimension for the network; and sending, by each compute node along the axis of the second dimension, the message to all of the compute nodes along an axis of the third dimension for the network.

Line-plane broadcasting in a data communications network of a parallel computer

DOEpatents

Archer, Charles J.; Berg, Jeremy E.; Blocksome, Michael A.; Smith, Brian E.

2010-11-23

Methods, apparatus, and products are disclosed for line-plane broadcasting in a data communications network of a parallel computer, the parallel computer comprising a plurality of compute nodes connected together through the network, the network optimized for point to point data communications and characterized by at least a first dimension, a second dimension, and a third dimension, that include: initiating, by a broadcasting compute node, a broadcast operation, including sending a message to all of the compute nodes along an axis of the first dimension for the network; sending, by each compute node along the axis of the first dimension, the message to all of the compute nodes along an axis of the second dimension for the network; and sending, by each compute node along the axis of the second dimension, the message to all of the compute nodes along an axis of the third dimension for the network.

Control and Non-Payload Communications Links for Integrated Unmanned Aircraft Operations

NASA Technical Reports Server (NTRS)

Kerczewski, Robert J.; Griner, James H.

2012-01-01

Technology for unmanned aircraft has advanced so rapidly in recent years that many new applications to public and commercial use are being proposed and implemented. In many countries, emphasis is now being placed on developing the means to allow unmanned aircraft to operate within non-segregated airspace along with commercial, cargo and other piloted and passenger-carrying aircraft.In the U.S., Congress has mandated that the Federal Aviation Administration reduce and remove restrictions on unmanned aircraft operations in a relatively short time frame. To accomplish this, a number of technical and regulatory hurdles must be overcome. A key hurdle involve the communications link connecting the remote pilot located at a ground control station with the aircraft in the airspace, referred to as the Control and Non-Payload Communications (CNPC) link. This link represents a safety critical communications link, and thus requires dedicated and protected aviation spectrum as well as national and international standards defining the operational requirements the CNPC system. The CNPC link must provide line-of-site (LOS) communications, primarily through a ground-based communication system, and beyond-line-of-sight (BLOS) communication achieved using satellite communications. In the U.S., the National Aeronautics and Space Administration (NASA) is charged with providing the technical body of evidence to support spectrum allocation requirements and national and international standards development for the CNPC link. This paper provides a description of the CNPC system, an overview of NASA's CNPC project, and current results in technology assessment, air-ground propagation characterization, and supporting system studies and analyses will be presented.

Anakoinosis: Communicative Reprogramming of Tumor Systems - for Rescuing from Chemorefractory Neoplasia.

PubMed

Hart, Christina; Vogelhuber, Martin; Wolff, Daniel; Klobuch, Sebastian; Ghibelli, Lina; Foell, Jürgen; Corbacioglu, Selim; Rehe, Klaus; Haegeman, Guy; Thomas, Simone; Herr, Wolfgang; Reichle, Albrecht

2015-08-01

Disruptive technologies, such as communicative reprogramming (anakoinosis) with cellular therapies in situ for treating refractory metastatic cancer allow patient care to accelerate along a totally new trajectory and highlight what may well become the next sea change in the care of patients with many types of advanced neoplasia. Cellular therapy in situ consisted of repurposed drugs, pioglitazone plus all-trans retinoic acid or dexamethasone or interferon-alpha (dual transcriptional modulation) combined with metronomic low-dose chemotherapy or low-dose 5-azacytidine, plus/minus classic targeted therapy. The novel therapeutic tools for specifically designing communication processes within tumor diseases focus on redirecting (1) rationalizations of cancer hallmarks (constitution of single cancer hallmarks), (2) modular events, (3) the 'metabolism' of evolutionary processes (the sum of therapeutically and intrinsically inducible evolutionary processes) and (4) the holistic communicative context, which determines validity and denotation of tumor promoting communication lines. Published data on cellular therapies in situ (6 histologic tumor types, 144 patients, age 0.9-83 years) in castration-resistant prostate cancer, pretreated renal clear cell carcinoma, chemorefractory acute myelocytic leukemia, multiple myeloma > second-line, chemorefractory Hodgkin lymphoma or multivisceral Langerhans cell histiocytosis, outline the possibility for treating refractory metastatic cancer with the hope that this type of reprogrammed communication will be scalable with minimal toxicity. Accessibility to anakoinosis is a tumor inherent feature, and cellular therapy in situ addresses extrinsic and intrinsic drug resistance, by redirecting convergent organized communication tools, while been supported by quite different pattern of (molecular-)genetic aberrations.

Issues in the Convergence of Control with Communication and Computation

DTIC Science & Technology

2004-10-04

Library/Upload/116/Cal1.doc. [42] M. H. Shwehdi and A. Z. Khan, “A power line data communication interface using spread spectrum technology in home ... automation ,” IEEE Transactions on Power Delivery, vol. 11, pp. 1232–1237, July 1996. ISSN: 0885-8977. [43] R. G. Olsen, “Technical considerations for

Interjections in the EFL Classroom: Teaching Sounds and Sequences

ERIC Educational Resources Information Center

Reber, Elisabeth

2011-01-01

In line with a communicative curriculum for English, it is claimed that communicative competence involves knowledge about when and how to display affectivity in talk-in-interaction. Typically, interjections have been described as a lexical means for expressions of emotion. A survey of textbooks canonical of EFL at German elementary and secondary…

Automated meter reading. (Latest citations from the INSPEC database). Published Search

DOE Office of Scientific and Technical Information (OSTI.GOV)

Not Available

1994-12-01

The bibliography contains citations concerning the automatic collection of data from utility meters. Citations focus on line carrier communications, radio communications, and telecommunication methods of data transmission. Applications for water, gas, and electric power meters are discussed. (Contains a minimum of 56 citations and includes a subject term index and title list.)

Info/Information Theory: Speakers Choose Shorter Words in Predictive Contexts

ERIC Educational Resources Information Center

Mahowald, Kyle; Fedorenko, Evelina; Piantadosi, Steven T.; Gibson, Edward

2013-01-01

A major open question in natural language research is the role of communicative efficiency in the origin and on-line processing of language structures. Here, we use word pairs like "chimp/chimpanzee", which differ in length but have nearly identical meanings, to investigate the communicative properties of lexical systems and the communicative…

Spread Spectrum Mobile Radio Communications.

DTIC Science & Technology

1984-09-15

environments ncluding data, voice and in Perspective video sienals. The sitchin- ca a- bilitv is what makes a collection of communication lines a...02 5pa (MPH) Figrs - Efeto eil pedo akterrrt 10 14 ~~r] =2 C r-- - = 2 .. L = 50,000 bits = 100 Kbps 3 = 1000 bits b = 100 bits 4P 4-,= .1 . = .001

Making the Invisible Visible. On Participation and Communication in a Global, Web-Based Master's Programme

ERIC Educational Resources Information Center

Dahlgren, Madeleine Abrandt; Larsson, Staffan; Walters, Shirley

2006-01-01

This study focuses on the discourse of an intercontinental on-line Master's programme in adult learning, using English as the lingua franca of the programme and involving four collaborating universities in Sweden, South Africa, Canada and Australia. The programme is highly interactive, emphasising communication between students. Taking the…

Aeronautical mobile satellite service: Air traffic control applications

NASA Technical Reports Server (NTRS)

Sim, Dave

1990-01-01

Canada's history both in aviation and in satellite communications development spans several decades. The introduction of aeronautical mobile satellite communications will serve our requirements for airspace management in areas not served by line-of-sight radio and radar facilities. The ensuing improvements in air safety and operating efficiency are eagerly awaited by the aviation community.

Opening Lines of Communication: Book Ordering and Reading Lists, the Academics View

ERIC Educational Resources Information Center

Cameron, Cleo; Siddall, Gillian

2017-01-01

This article outlines and assesses the research into resource management and ordering processes at the University of Northampton and academics' knowledge of these processes. The aim of the research was to identify ways of streamlining the service, to improve communication between academic and library staff, with the objective of an enhanced…

76 FR 79110 - Service Rules and Policies for the Broadcasting Satellite Service (BSS)

Federal Register 2010, 2011, 2012, 2013, 2014

2011-12-21

... defined parallel to a line passing through the center of the Earth, with the positive direction pointing... and Policies for the Broadcasting Satellite Service (BSS) AGENCY: Federal Communications Commission... Communications Commission, Room 1-C823, 445 12th Street SW., Washington, DC 20554. Please include the OMB Control...

Distributed Name Servers: Naming and Caching in Large Distributed Computing Environments

DTIC Science & Technology

1985-12-01

transmission rate of the communication medium1, transmission over a 56K bps line costs approx- imately 54r, and similarly, communication over a 9.6K...memories for modem computer systems attempt to maximize the hit ratio for a fixed-size cache by utilizing intelligent cache replacement algorithms

DOE Office of Scientific and Technical Information (OSTI.GOV)

Shwehdi, M.H.; Khan, A.Z.

Building automation technology is rapidly developing towards more reliable communication systems, devices that control electronic equipments. These equipment if controlled leads to efficient energy management, and savings on the monthly electricity bill. Power Line communication (PLC) has been one of the dreams of the electronics industry for decades, especially for building automation. It is the purpose of this paper to demonstrate communication methods among electronic control devices through an AC power line carrier within the buildings for more efficient energy control. The paper outlines methods of communication over a powerline, namely the X-10 and CE bus. It also introduces themore » spread spectrum technology as to increase speed to 100--150 times faster than the X-10 system. The powerline carrier has tremendous applications in the field of building automation. The paper presents an attempt to realize a smart house concept, so called, in which all home electronic devices from a coffee maker to a water heater microwave to chaos robots will be utilized by an intelligent network whenever one wishes to do so. The designed system may be applied very profitably to help in energy management for both customer and utility.« less

Fuzzy logic controller to improve powerline communication

NASA Astrophysics Data System (ADS)

Tirrito, Salvatore

2015-12-01

The Power Line Communications (PLC) technology allows the use of the power grid in order to ensure the exchange of data information among devices. This work proposes an approach, based on Fuzzy Logic, that dynamically manages the amplitude of the signal, with which each node transmits, by processing the master-slave link quality measured and the master-slave distance. The main objective of this is to reduce both the impact of communication interferences induced and power consumption.

Air & Space Journal. Volume 28, Number 4. July-August 2014

DTIC Science & Technology

2014-08-01

point is further reinforced when we remember that the development and sharing of SA remain anchored in part to line-of-sight radio communications ...organization of communications (p. 208) • provisions for all arms [fires] cooperation in each phase of the operation (p. 208) • policy on radio use (p...all means of communication and of resupply” (ibid.). 12. Ibid., 202. 13. Ibid., 142–43. Tukhachevskii notes that the radio would transform from a

3-D Soviet Style: A Presentation on Lessons Learned from the Soviet Experience in Afghanistan

DTIC Science & Technology

2007-10-01

communication and to the efforts the Soviets made in building Afghan security forces. It includes information on the theory and practice of Soviet...state-building; lines of communication are a critical vulnerability to insurgent attacks; successive battlefield victories do not guarantee strategic...rouge en ce qui concerne la sécurisation de ses voies de communication . Un accent particulier est également mis sur les efforts soviétiques visant à

The application of mobile satellite services to emergency response communications

NASA Technical Reports Server (NTRS)

Freibaum, J.

1980-01-01

The application of an integrated satellite/terrestrial emergency response communications system in disaster relief operations is discussed. Large area coverage communications capability, full-time availability, a high degree of mobility, plus reliability, are pointed out as criteria for an effective emergency communications system. Response time is seen as a major factor determining the possible survival and/or protection of property. These criteria, can not be met by existing communications systems and complete blackouts were experienced during the past decades caused by either interruption or destruction of existing power lines, and overload or inadequacy of remaining lines. Several emergency cases, caused by either hurricanes, tornados, or floods, during which communication via satellite was instrumental to inform rescue and relief teams, are described in detail. Seismic Risk Maps and charts of Major Tectonic Plates Earthquake Epicenters are given, and it is noted that, 35 percent of the U.S. population is living in critical areas. National and international agreements for the implementation of a satellite-aided global Search and Rescue Program is mentioned. Technological and economic breakthroughs are still needed in large multibeam antennas, switching circuits, and low cost mobile ground terminals. A pending plan of NASA to initiate a multiservice program in 1982/83, with a Land Mobile Satellite capability operating in the 806 - 890 MHz band as a major element, may help to accelerate the needed breakthroughs.

Assessing Spectrum Compatibility for Beyond-Line-of-Sight UAS Control and Non-Payload Communications

NASA Technical Reports Server (NTRS)

Kerczewski, Robert J.; Wilson, Jeffrey D.; Bishop, William D.

2014-01-01

In order to provide for the safe integration of unmanned aircraft systems (UAS) into the National Airspace System (NAS), the control and non-payload communications (CNPC) link must be highly reliable. A specific requirement is that it must operate using aviation safety radiofrequency spectrum. Two types of links are required - line-of-sight (LOS) using terrestrial-based communications and beyond-line-of-sight (BLOS) using satellite communications. The 2012 World Radiocommunication Conference (WRC-12) provided a suitable allocation for LOS CNPC spectrum in the 5030 to 5091 MHz band which, when combined with a previously existing allocation fulfills the LOS spectrum requirement. The 5030 to 5091 MHz band is also allocated for BLOS CNPC, but since a significant portion of that band is required for LOS CNPC, additional BLOS spectrum is required. More critically, there are no satellites in operation or in development to provide such services in that band. Hence BLOS CNPC cannot be provided in protected aviation spectrum under current conditions. To fill this gap and enable integration of UAS into the NAS, it has been proposed to allow CNPC to operate over certain Fixed Satellite Service (FSS) bands in which many satellites currently provide commercial services. To enable this, changes in international regulation must be enacted. Agenda Item 1.5 of the 2015 WRC examines the possible regulatory changes needed. As part of the examination process, sharing between potential UAS using satellite communications for BLOS CNPC and other services allocated to the FSS bands being considered must be studied. This paper reviews the technical requirements and approach being undertaken for these sharing studies, with emphasis on study of interference from UAS into digital repeater links operating under the Fixed Service allocation. These studies are being conducted by NASA Glenn Research Center.

Assessing Spectrum Compatibility for Beyond-Line-of-Sight UAS Control and Non-Payload Communications

NASA Technical Reports Server (NTRS)

Kerczewski, Robert J.; Wilson, Jeffrey D.; Bishop, William D.

2014-01-01

In order to provide for the safe integration of unmanned aircraft systems (UAS) into the National Airspace System (NAS), the control and non-payload communications (CNPC) link must be highly reliable. A specific requirement is that it must operate using aviation safety radiofrequency spectrum. Two types of links are required - line-of-sight (LOS) using terrestrial-based communications and beyond-line- of-sight (BLOS) using satellite communications. The 2012 World Radiocommunication Conference (WRC-12) provided a suitable allocation for LOS CNPC spectrum in the 5030-5091 MHz band which, when combined with a previously existing allocation fulfills the LOS spectrum requirement. The 5030- 5091 MHz band is also allocated for BLOS CNPC, but since a significant portion of that band is required for LOS CNPC, additional BLOS spectrum is required. More critically, there are no satellites in operation or in development to provide such services in that band. Hence BLOS CNPC cannot be provided in protected aviation spectrum under current conditions. To fill this gap and enable integration of UAS into the NAS, it has been proposed to allow CNPC to operate over certain Fixed Satellite Service (FSS) bands in which many satellites currently provide commercial services. To enable this, changes in international regulation must be enacted. Agenda Item 1.5 of the 2015 WRC examines the possible regulatory changes needed. As part of the examination process, sharing between potential UAS using satellite communications for BLOS CNPC and other services allocated to the FSS bands being considered must be studied. This paper reviews the technical requirements and approach being undertaken for these sharing studies, with emphasis on study of interference from UAS into digital repeater links operating under the Fixed Service allocation. These studies are being conducted by NASA Glenn Research Center.

A secure communication using cascade chaotic computing systems on clinical decision support.

PubMed

Koksal, Ahmet Sertol; Er, Orhan; Evirgen, Hayrettin; Yumusak, Nejat

2016-06-01

Clinical decision support systems (C-DSS) provide supportive tools to the expert for the determination of the disease. Today, many of the support systems, which have been developed for a better and more accurate diagnosis, have reached a dynamic structure due to artificial intelligence techniques. However, in cases when important diagnosis studies should be performed in secret, a secure communication system is required. In this study, secure communication of a DSS is examined through a developed double layer chaotic communication system. The developed communication system consists of four main parts: random number generator, cascade chaotic calculation layer, PCM, and logical mixer layers. Thanks to this system, important patient data created by DSS will be conveyed to the center through a secure communication line.

Insights from an international stakeholder consultation to identify informational needs related to seafood safety

DOE Office of Scientific and Technical Information (OSTI.GOV)

Tediosi, Alice, E-mail: alice.tediosi@aeiforia.eu; Fait, Gabriella; Jacobs, Silke

Food safety assessment and communication have a strong importance in reducing human health risks related to food consumption. The research carried out within the ECsafeSEAFOOD project aims to assess seafood safety issues, mainly related to non-regulated priority environmental contaminants, and to evaluate their impact on public health. In order to make the research results accessible and exploitable, and to respond to actual stakeholders' demands, a consultation with international stakeholders was performed by means of a survey. The focus was on policy and decision makers, food producers and processors, and agencies (i.e. EU and National or Regional agencies related to Foodmore » Safety or Public Health) and consumer organisations. The survey considered questions related to: seafood safety assessment and mitigation strategies, availability of data, such as the level of information on different contaminants, and communication among different stakeholder groups. Furthermore, stakeholders were asked to give their opinion on how they believe consumers perceive risks associated with environmental contaminants. The survey was distributed to 531 key stakeholders and 91 responses were received from stakeholders from 30 EU and non-EU countries. The main results show that communication between different groups of stakeholders needs to be improved and that there is a deficit of information and data in the field of seafood safety. This pertains mainly to the transfer of contaminants between the environment and seafood, and to the diversity of environmental contaminants such as plastic additives, algal toxins and hormones. On-line tools were perceived to be the most useful communication channel. - Highlights: • We consulted stakeholders to identify their needs about seafood safety. • An on-line survey was prepared and sent to gather stakeholders' opinions. • Communication among stakeholders needs to be improved. • There is a deficit of information and data in the field of seafood safety. • On-line tools are perceived to be the most useful communication channel.« less

Marketing the `Broad Line': Invitations to STEM education in a Swedish recruitment campaign

NASA Astrophysics Data System (ADS)

Andrée, Maria; Hansson, Lena

2013-01-01

In many Western societies, there is a concern about the tendency of young people not choosing Science, Technology, Engineering, and Mathematics (STEM) education and occupations. In response, different initiatives have been launched. If one believes that science should have a place in more young people's lives, an important question is to what extent recruitment campaigns communicate messages that open up for STEM education to become relevant in young people's identity formation. Here, we analyse a Swedish government-initiated, primarily Internet-based recruitment attempt ('The Broad Line Campaign') aimed at increasing the number of young people choosing the natural science programme in upper secondary school. The campaign is based on marketing principles and deliberately draws on identity issues. The data analysed consists of campaign films and written resources describing the campaign. Data are analysed by use of the constant comparative approach in order to produce categories describing different messages about why to engage in STEM education. These messages are then analysed from an identity perspective using the concept of subjective values. Our results show that the messages communicated in the Broad Line campaign emphasise utility value, attainment value and relative cost rather than interest-enjoyment. The campaign communicates that the natural science programme is to be associated with a high attainment value without establishing relations to the field of science. Finally, potential consequences of the communicated messages in the campaign are discussed in light of previous research.

Time-Reversal Based Range Extension Technique for Ultra-wideband (UWB) Sensors and Applications in Tactical Communications and Networking

DTIC Science & Technology

2009-04-16

the transmitted waveform, then spectral mask, notch line of Arbitrary Notch Filter , the designed waveforms and multipath impulse response represented...400 Frequence (MHz) Figure 5.4: Spectral mask, notch line of Arbitrary Notch Filter , the designed waveforms and multipath impulse response...600 Frequence (MHz) Figure 5.7: Spectral mask, notch line of Arbitrary Notch Filter , the designed waveforms and multipath impulse response

Performance Evaluation of Satellite Communication Systems Operating in the Q/V/W Bands

DTIC Science & Technology

2013-06-30

cloud liquid water content (blue line = original MODIS data, red line = underlying Gaussian process) and of rainfall ( NIMROD rain rate data) .. 3-22...correlation of rainfall as obtained from an extensive set of rain field collected by the NIMROD weather radar network [Luini and Capsoni, 2012] has been...underlying Gaussian process) Rain ( NIMROD data) Figure 3-21. Decorrelation with distance of the cloud liquid water content (blue line = original

Leadership line care rounds: Application of the engage, educate, execute, and evaluate improvement model for the prevention of central line-associated bloodstream infections in children with cancer.

PubMed

Owings, Angie; Graves, JoBeth; Johnson, Sherry; Gilliam, Craig; Gipson, Mike; Hakim, Hana

2018-02-01

To prevent central line-associated bloodstream infections (CLABSIs), leadership line care rounds (LLCRs) used the engage, educate, execute, and evaluate improvement model to audit compliance, identify barriers and opportunities, empower patients and families, and engage leadership. Findings of excellence and improvement opportunities were communicated to unit staff and managers. LLCRs contributed to compliance with CLABSI prevention interventions. Copyright © 2018 Association for Professionals in Infection Control and Epidemiology, Inc. Published by Elsevier Inc. All rights reserved.

Impacting Motivation in the Virtual Classroom

ERIC Educational Resources Information Center

Artyushina, Galina; Sheypak, Olga

2012-01-01

Teachers, educational managers and learners must realize that new opportunities are offered by modern on-line communication. A person with basic Internet and Web skills is open to a new world of knowledge, from free Web surfing and self-organized education--through on-line resources and familiarization with Internet culture, its places, sites,…

Writing on the Front Line: A Study of Workplace Writing.

ERIC Educational Resources Information Center

Mabrito, Mark

1997-01-01

Examines the on-the-job writing of 60 front-line supervisors in a Midwest steel manufacturing plant. Presents information about the frequency, type, purpose, and length of writing produced along with the challenges supervisors faced as writers on the job. Argues that this information will help business communications instructors enhance their…

GAP JUNCTION COMMUNICATON IN A TRANSFECTED HUMAN CELL LINE: ACTION OF MELATONIN AND MAGNETIC FIELDS

EPA Science Inventory

GAP JUNCTION COMMUNICTION IN TRANSFECTED HUMAN CELL LINE: ACTION OF MELATONIN AND MAGNETIC FIELDS.

OBJECTIVE: We previously showed that functional gap junction communication (GJC), as monitored by dye transfer (DT), could be enhanced in mouse C3H 10T112 cells and in mouse...

Complex approach to the investigation of short fiber-optic comunication lines

NASA Astrophysics Data System (ADS)

Sukhoivanov, I. A.; Kontar', A. A.; Kublik, A. V.; Makarevich, V. S.

The paper proposes a method of complex measurements based on the consideration of the parameters of all the elements used in a specific multimode fiber-optic communication line. It is shown that the error in measuring losses in waveguides up to 20 m long can reach a value of 60 percent.

49 CFR 172.822 - Limitation on actions by states, local governments, and Indian tribes.

Code of Federal Regulations, 2010 CFR

2010-10-01

... REGULATIONS HAZARDOUS MATERIALS TABLE, SPECIAL PROVISIONS, HAZARDOUS MATERIALS COMMUNICATIONS, EMERGENCY... state, political subdivision of a state, or an Indian tribe that designates, limits, or prohibits the use of a rail line (other than a rail line owned by a state, political subdivision of a state, or an...

Bi-directional gap junction-mediated soma-germline communication is essential for spermatogenesis.

PubMed

Smendziuk, Christopher M; Messenberg, Anat; Vogl, A Wayne; Tanentzapf, Guy

2015-08-01

Soma-germline interactions play conserved essential roles in regulating cell proliferation, differentiation, patterning and homeostasis in the gonad. In the Drosophila testis, secreted signalling molecules of the JAK-STAT, Hedgehog, BMP and EGF pathways are used to mediate soma-germline communication. Here, we demonstrate that gap junctions may also mediate direct, bi-directional signalling between the soma and germ line. When gap junctions between the soma and germ line are disrupted, germline differentiation is blocked and germline stem cells are not maintained. In the soma, gap junctions are required to regulate proliferation and differentiation. Localization and RNAi-mediated knockdown studies reveal that gap junctions in the fly testis are heterotypic channels containing Zpg (Inx4) and Inx2 on the germ line and the soma side, respectively. Overall, our results show that bi-directional gap junction-mediated signalling is essential to coordinate the soma and germ line to ensure proper spermatogenesis in Drosophila. Moreover, we show that stem cell maintenance and differentiation in the testis are directed by gap junction-derived cues. © 2015. Published by The Company of Biologists Ltd.

Obstacle evasion in free-space optical communications utilizing Airy beams.

PubMed

Zhu, Guoxuan; Wen, Yuanhui; Wu, Xiong; Chen, Yujie; Liu, Jie; Yu, Siyuan

2018-03-15

A high speed free-space optical communication system capable of self-bending signal transmission around line-of-sight obstacles is proposed and demonstrated. Airy beams are generated and controlled to achieve different propagating trajectories, and the signal transmission characteristics of these beams around the obstacle are investigated. Our results confirm that, by optimizing their ballistic trajectories, Airy beams are able to bypass obstacles with more signal energy and thus improve the communication performance compared with normal Gaussian beams.

Obstacle evasion in free-space optical communications utilizing Airy beams

NASA Astrophysics Data System (ADS)

Zhu, Guoxuan; Wen, Yuanhui; Wu, Xiong; Chen, Yujie; Liu, Jie; Yu, Siyuan

2018-03-01

A high speed free-space optical communication system capable of self-bending signal transmission around line-of-sight obstacles is proposed and demonstrated. Airy beams are generated and controlled to achieve different propagating trajectories, and the signal transmission characteristics of these beams around the obstacle are investigated. Our results confirm that, by optimising their ballistic trajectories, Airy beams are able to bypass obstacles with more signal energy and thus improve the communication performance compared with normal Gaussian beams.

Extravehicular Activity/Air Traffic Control (EVA/ATC) test report. [communication links to the astronaut

NASA Technical Reports Server (NTRS)

Tomaro, D. J.

1982-01-01

During extravehicular activity (EVA), communications between the EVA astronaut and the space shuttle orbiter are maintained by means of transceiver installed in the environmental support system backpack. Onboard the orbiter, a transceiver line replaceable unit and its associated equipment performs the task of providing a communications link to the astronaut in the extravehicular activity/air traffic control (EVA/ATC) mode. Results of the acceptance tests that performed on the system designed and fabricated for EVA/ATC testing are discussed.

Neighbors On Line: Enhancing Global Perspectives and Cultural Sharing with the Internet.

ERIC Educational Resources Information Center

Lee, Okhwa; Knupfer, Nancy Nelson

The purpose of this study was to investigate the status of computer use within Korean and United States schools, and then use the Internet to establish cross cultural communication between schools. It was hoped that through international communication using the Internet, students at the elementary, junior high, and high school levels would gain…

75 FR 59753 - Self-Regulatory Organizations; Notice of Filing and Immediate Effectiveness of Proposed Rule...

Federal Register 2010, 2011, 2012, 2013, 2014

2010-09-28

... makes clear what type of information may be communicated to and from hand-held devices. \\8\\ 15 U.S.C... using a wired telephone line,\\5\\ NYSE Amex approved portable telephones,\\6\\ or through a written electronic communication from the Floor brokers' hand-held device as permitted by the NYSE Amex's ``Wireless...

INHIBITION OF GAP JUNCTIONAL INTERCELLULAR COMMUNICATION BY PERFLUORINATED COMPOUNDS IN RAT LIVER AND DOLPHIN KIDNEY EPITHELIAL CELL LINES IN VITRO AND SPRAGUE-DAWLEY RATS IN VIVO

EPA Science Inventory

Abstract

Gap Junctional Intercellular Communication (GJIC) is the major pathway of intercellular signal transduction, and is, thus, important for normal cell growth and function. Recent studies have revealed a global distribution of some perfluorinated organic compounds e...

Raising the Question Number 1. Is the Rush to Provide On-Line Instruction Setting Our Students Up for Failure?

ERIC Educational Resources Information Center

Allen, Terre H.

2006-01-01

This essay is designed to engage academic discipline in a conversation about the utility and practices associated with providing communication coursework online, particularly general education, communication skills courses. The author has framed the conversation in terms of student success, retention, and degree completion. He outlines three…

Do Female and Male On-Line Students Meet Their Needs Differently? Introducing New Data.

ERIC Educational Resources Information Center

Gougeon, Thomas D.

Deborah Tannen's framework for interpersonal communication between males and females (published in 1990) was used to explore how male and female distance education students meet their primary needs through communication. The study population consisted of the 19 female and 6 male students enrolled in a 13-week computer conferencing course at the…

Conflict in the Classroom: Considering the Effects of Partisan Difference on Political Education

ERIC Educational Resources Information Center

Kelly-Woessner, April; Woessner, Matthew

2008-01-01

Political scientists have noted that, in a variety of communication settings, people are less receptive to information that comes from a politically disagreeable source. Yet, there is little research on patterns of communication across lines of political difference in an educational setting, which we argue is unique in a number of ways. Using a…

Failover Switching Tests Between Two RF Communications Links

NASA Technical Reports Server (NTRS)

Brooks, David; Frantz, Brian; Hoder, Doug; Wilkins, Ryan

2003-01-01

This work presents a short report on the routing tests of the Ku band satcom and VHF line-of-sight communications systems on the Advanced Air Transportation Technologies (AATT) Aero/Mobile van. The first section is a description of the equipment used, followed by descriptions of the tests, the theoretical results, and finally, conclusions and the actual data.

Mobile satellite communications in the Forest Service

NASA Technical Reports Server (NTRS)

Warren, John R.

1988-01-01

There are usually some places within a forest that do not have adequate communication coverage due to line-of-sight or other reasons. These areas are generally known by the foresters and radio technicians and allowances are made for that when working or traveling in those areas. However, when wildfire or other emergencies occur, communications are vital because wildfires can require hundreds of firefighters and cover thousands of acres. During these emergency operations, the existing communications are not adequate and complete radio systems are moved into the area for the conduct of fire communications. Incident command posts (ICPs) and fire camps are set up in remote locations and there is constant need for communications in the fire area and to agency headquarters and dispatch offices. Mobile satellite communications would be an ideal supplement to the Forest Service's current communications system in aiding forest fire control activities.

Analytical performance study of solar blind non-line-of-sight ultraviolet short-range communication links.

PubMed

Xu, Zhengyuan; Ding, Haipeng; Sadler, Brian M; Chen, Gang

2008-08-15

Motivated by recent advances in solid-state incoherent ultraviolet sources and solar blind detectors, we study communication link performance over a range of less than 1 km with a bit error rate (BER) below 10(-3) in solar blind non-line-of-sight situation. The widely adopted yet complex single scattering channel model is significantly simplified by means of a closed-form expression for tractable analysis. Path loss is given as a function of transceiver geometry as well as atmospheric scattering and attenuation and is compared with experimental data for model validation. The BER performance of a shot-noise-limited receiver under this channel model is demonstrated.

Fraunhofer filters to reduce solar background for optical communications

NASA Technical Reports Server (NTRS)

Kerr, E. L.

1986-01-01

A wavelength that lies within a spectral interval of reduced solar emission (a Fraunhofer line) can carry optical communications with reduced interference from direct or reflected background sunlight. Suitable Fraunhofer lines are located within the tuning range of good candidate lasers. The laser should be tunable dynamically to track Doppler shifts in the sunlight incident on any solar system body that may appear in the background as viewed by the receiver. A Fraunhofer filter used with a direct-detection receiver should be tuned to match the Doppler shifts of the source and background. The required tuning calculated here for various situations is also required if, instead, one uses a heterodyne receiver with limited post-detection bandwidth.

Achieving EMC Emissions Compliance for an Aeronautics Power Line Communications System

NASA Astrophysics Data System (ADS)

Dominiak, S.; Vos, G.; ter Meer, T.; Widmer, H.

2012-05-01

Transmitting data over the power distribution network - Power Line Communications (PLC) -provides an interesting solution to reducing the weight and complexity of wiring networks in commercial aircraft. One of the potential roadblocks for the introduction of this technology is achieving EMC emissions compliance. In this article an overview of the EMC conducted and radiated emissions testing for PLC- enabled aeronautics equipment is presented. Anomalies resulting from chamber resonances leading to discrepancies between the conducted emissions tests and the measured radiated emissions are identified and described. Measurements made according to the current version of the civil aeronautical EMC standard, EUROCAE ED-14F (RTCA DO-160F), show that PLC equipment can achieve full EMC emissions compliance.

On-line atomic data access

NASA Astrophysics Data System (ADS)

Schultz, David R.; Nash, Jeffrey K.

1996-07-01

The need for atomic data is one which continues to expand in a wide variety of applications including fusion energy, astrophysics, laser-produced plasma research, and plasma processing. Modern computer database and communications technology enables this data to be placed on-line and obtained by users over the INTERNET. Presented here is a summary of the observations and conclusions regarding such on-line atomic data access derived from a forum held at the Tenth APS Topical Conference on Atomic Processes in Plasmas.

Which colors would extraterrestrial civilizations use to transmit signals?: The ;magic wavelengths; for optical SETI

NASA Astrophysics Data System (ADS)

Narusawa, Shin-ya; Aota, Tatusya; Kishimoto, Ryo

2018-04-01

In the case of radio SETI, there are predicted frequencies which extraterrestrial beings select to send messages to other civilizations. Those are called ;magic frequencies. Considering the optical region, terrestrial technologies can not transmit arbitrary wavelengths of high-power optical lasers, easily. In this article, we discuss communications among civilizations with the same level of technology as us to enhance the persuasive power. It might be possible to make a reasonable assumption about the laser wavelengths transmitted by extraterrestrial intelligences to benefit optical SETI (OSETI) methods. Therefore, we propose some ;magic wavelengths; for spectroscopic OSETI observations in this article. From the senders point of view, we argue that the most favorable wavelength used for interstellar communication would be the one of YAG lasers, at 1.064 μm or its Second Harmonic Generation (532.1 nm). On the contrary, there are basic absorption lines in the optical spectra, which are frequently observed by astrophysicists on Earth. It is possible that the extraterrestrials used lasers, which wavelengths are tuned to such absorption lines for sending messages. In that case, there is a possibility that SHG and/or Sum Frequency Generation of YAG and YLF lasers are used. We propose three lines at, 393.8 nm (near the Ca K line), 656.5 nm (near the Hα line) and 589.1 nm (Na D2 line) as the magic wavelengths.

47 CFR 63.66 - Closure of or reduction of hours of service at telephone exchanges at military establishments.

Code of Federal Regulations, 2010 CFR

2010-10-01

... 47 Telecommunication 3 2010-10-01 2010-10-01 false Closure of or reduction of hours of service at telephone exchanges at military establishments. 63.66 Section 63.66 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) COMMON CARRIER SERVICES (CONTINUED) EXTENSION OF LINES, NEW LINES, AND DISCONTINUANCE, REDUCTION, OUTAGE AND...

A Living Library: New Model for Global Electronic Interactivity and Networking in the Garden.

ERIC Educational Resources Information Center

Sherk, Bonnie

1995-01-01

Describes the Living Library, an idea to create a network of international cultural parks in different cities of the world using new communications technologies on-line in a garden setting, bringing the humanities, sciences, and social sciences to life through plants, visual and performed artworks, lectures, and computer and on-line satellite…

Protocol for a mixed-methods study on leader-based interventions in construction contractors' safety commitments.

PubMed

Pedersen, Betina Holbaek; Dyreborg, Johnny; Kines, Pete; Mikkelsen, Kim Lyngby; Hannerz, Harald; Andersen, Dorte Raaby; Spangenberg, Søren

2010-06-01

Owing to high injury rates, safety interventions are needed in the construction industry. Evidence-based interventions tailored to this industry are, however, scarce. Leader-based safety interventions have proven more effective than worker-based interventions in other industries. To test a leader-based safety intervention for construction sites. The intervention consists of encouraging safety coordinators to provide feedback on work safety to the client and line management. The intention is to increase communication and interactions regarding safety within the line management and between the client and the senior management. It is hypothesised that this, in turn, will lead to increased communication and interaction about safety between management and coworkers as well as an increased on-site safety level. A group-randomised double-blinded case study of six Danish construction sites (three intervention sites and three control sites). The recruitment of the construction sites is performed continuously from January 2010 to June 2010. The investigation of each site lasts 20 continuous weeks. Confirmatory statistical analysis is used to test if the safety level increased, and if the probability of safety communications between management and coworkers increases as a consequence of the intervention. The data collection will be blinded. Qualitative methods are used to evaluate if communication and interactions about safety at all managerial levels, including the client, increase. (1) The proportion of safety-related communications out of all studied communications between management and coworkers. (2) The safety level index of the construction sites.

Maximum Interconnectedness and Availability for Directional Airborne Range Extension Networks

DTIC Science & Technology

2016-08-29

2 IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS I. INTRODUCTION Tactical military networks both on land and at sea often have restricted transmission ...ranges due to limits on terminal transmission power , geographic features that block line-of-sight, and poor over-the-horizon signal propagation...IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS 1 Maximum Interconnectedness and Availability for Directional Airborne Range Extension Networks Thomas

Timing of Gazes in Child Dialogues: A Time-Course Analysis of Requests and Back Channelling in Referential Communication

ERIC Educational Resources Information Center

Sandgren, Olof; Andersson, Richard; van de Weijer, Joost; Hansson, Kristina; Sahlen, Birgitta

2012-01-01

Background: This study investigates gaze behaviour in child dialogues. In earlier studies the authors have investigated the use of requests for clarification and responses in order to study the co-creation of understanding in a referential communication task. By adding eye tracking, this line of research is now expanded to include non-verbal…

Ultraviolet Communication for Medical Applications

DTIC Science & Technology

2015-06-01

DEI procured several UVC phosphors and tested them with vacuum UV (VUV) excitation. Available emission peaks include: 226 nm, 230 nm, 234 nm, 242...SUPPLEMENTARY NOTES Report contains color. 14. ABSTRACT Under this Phase II SBIR effort, Directed Energy Inc.’s (DEI) proprietary ultraviolet ( UV ...15. SUBJECT TERMS Non-line-of-sight (NLOS), networking, optical communication, plasma-shells, short range, ultraviolet ( UV ) light 16. SECURITY

Best practices for interacting with the public about wildland fire: Key findings from interviews

Treesearch

Daniel Berkman

2012-01-01

Interviews were conducted with public information and line officers about wildland fire communications with the public. The goal of these interviews was to determine the best practices and most useful content and format for an annotated bibliography about external wildland fire communications, i.e., does the current literature reviewed address the issues of greatest...

Subsets of ATP-sensitive potassium channel (KATP) inhibitors increase gap junctional intercellular communication in metastatic cancer cell lines independent of SUR expression

USDA-ARS?s Scientific Manuscript database

Gap junctional intercellular communication (GJIC) is a process whereby cells share molecules and nutrients with each other by physical contact through cell membrane pores. In tumor cells, GJIC is often altered, suggesting that this process may be important in the context of cancer. Certain ion chan...

An Analysis of the Perceptions of Division Senior Combat Arms Leaders of the Tactical Competence of Division Signal Officers and Assistant Division Signal Officers.

DTIC Science & Technology

1987-06-05

field the equipment ( Valletta , 1980). The need for signal officers to be trained to employ new communications systems in support of the tactical...Gordon, GAO 30905). Valletta , A. M. (1980). Tactical automnation-communications: Supporting corps rear to front line. Army Magazine, 1(4), 25-28

The Use of Graphics to Communicate Findings of Longitudinal Data in Design-Based Research

ERIC Educational Resources Information Center

Francis, Krista; Jacobsen, Michele; Friesen, Sharon

2014-01-01

Visuals and graphics have been used for communicating complex ideas since 1786 when William Playfair first invented the line graph and bar chart. Graphs and charts are useful for interpretation and making sense of data. For instance, John Snow's scatter plot helped pinpoint the source of a cholera outbreak in London in 1854 and also changed…

A Collaboration-Oriented M2M Messaging Mechanism for the Collaborative Automation between Machines in Future Industrial Networks

PubMed Central

Gray, John

2017-01-01

Machine-to-machine (M2M) communication is a key enabling technology for industrial internet of things (IIoT)-empowered industrial networks, where machines communicate with one another for collaborative automation and intelligent optimisation. This new industrial computing paradigm features high-quality connectivity, ubiquitous messaging, and interoperable interactions between machines. However, manufacturing IIoT applications have specificities that distinguish them from many other internet of things (IoT) scenarios in machine communications. By highlighting the key requirements and the major technical gaps of M2M in industrial applications, this article describes a collaboration-oriented M2M (CoM2M) messaging mechanism focusing on flexible connectivity and discovery, ubiquitous messaging, and semantic interoperability that are well suited for the production line-scale interoperability of manufacturing applications. The designs toward machine collaboration and data interoperability at both the communication and semantic level are presented. Then, the application scenarios of the presented methods are illustrated with a proof-of-concept implementation in the PicknPack food packaging line. Eventually, the advantages and some potential issues are discussed based on the PicknPack practice. PMID:29165347

Flow line sampler

DOEpatents

Nicholls, Colin I.

1992-07-14

An on-line product sampling apparatus and method for measuring product samples from a product stream (12) in a flow line (14) having a sampling aperture (11), includes a sampling tube (18) for containing product samples removed from flow line (14). A piston (22) removes product samples from the product stream (12) through the sampling aperture (11) and returns samples to product stream (12). A sensor (20) communicates with sample tube (18), and senses physical properties of samples while the samples are within sample tube (18). In one embodiment, sensor (20) comprises a hydrogen transient nuclear magnetic resonance sensor for measuring physical properties of hydrogen molecules.

Alternative communication network designs for an operational Plato 4 CAI system

NASA Technical Reports Server (NTRS)

Mobley, R. E., Jr.; Eastwood, L. F., Jr.

1975-01-01

The cost of alternative communications networks for the dissemination of PLATO IV computer-aided instruction (CAI) was studied. Four communication techniques are compared: leased telephone lines, satellite communication, UHF TV, and low-power microwave radio. For each network design, costs per student contact hour are computed. These costs are derived as functions of student population density, a parameter which can be calculated from census data for one potential market for CAI, the public primary and secondary schools. Calculating costs in this way allows one to determine which of the four communications alternatives can serve this market least expensively for any given area in the U.S. The analysis indicates that radio distribution techniques are cost optimum over a wide range of conditions.

Communication by Fire (and Smoke) Signals in the Kingdom of Judah

NASA Technical Reports Server (NTRS)

Borowski, Oded; Howell, Burgess F.; Sever, Thomas L.

1998-01-01

This paper examines the use of ancient fire and smoke signals for communication in the Kingdom of Judah. Historical and biblical references are cited that discuss this communication system. The current physical and political landscape of Israel precludes testing of hypotheses using traditional techniques. The use of a GIS is enlisted to overcome these obstacles and predict line-of-sight patterns that are conducive for a fire signal communication system. Final demonstration of this predictive model will incorporate state-of-the-art technology and in-field data acquisition to provide the sufficient accuracy that is required for proof-of-concept. This research will provide insight into the technical capability of the ancient Israelites for communication across a mountainous, desert environment.

RF MEMS and Their Applications in NASA's Space Communication Systems

NASA Technical Reports Server (NTRS)

Williams, W. Daniel; Ponchak, George E.; Simons, Rainee N.; Zaman, Afroz; Kory, Carol; Wintucky, Edwin; Wilson, Jeffrey D.; Scardelletti, Maximilian; Lee, Richard; Nguyen, Hung

2001-01-01

Radio frequency (RF) and microwave communication systems rely on frequency, amplitude, and phase control circuits to efficiently use the available spectrum. Phase control circuits are required for electronically scanning phase array antennas that enable radiation pattern shaping, scanning, and hopping. Two types of phase shifters, which are the phase control circuits, are most often used. The first is comprised of two circuits with different phase characteristics such as two transmission lines of different lengths or a high pass and low pass filter and a switch that directs the RF power through one of the two circuits. Alternatively, a variable capacitor, or varactor, is used to change the effective electrical path length of a transmission line, which changes the phase characteristics. Filter banks are required for the diplexer at the front end of wide band communication satellites. These filters greatly increase the size and mass of the RF/microwave systems, but smaller diplexers may be made with a low loss varactor or a group of capacitors, a switch and an inductor.

De-optical-line-terminal hybrid access-aggregation optical network for time-sensitive services based on software-defined networking orchestration

NASA Astrophysics Data System (ADS)

Bai, Wei; Yang, Hui; Xiao, Hongyun; Yu, Ao; He, Linkuan; Zhang, Jie; Li, Zhen; Du, Yi

2017-11-01

With the increase in varieties of services in network, time-sensitive services (TSSs) appear and bring forward an impending need for delay performance. Ultralow-latency communication has become one of the important development goals for many scenarios in the coming 5G era (e.g., robotics and driverless cars). However, the conventional methods, which decrease delay by promoting the available resources and the network transmission speed, have limited effect; a new breakthrough for ultralow-latency communication is necessary. We propose a de-optical-line-terminal (De-OLT) hybrid access-aggregation optical network (DAON) for TSS based on software-defined networking (SDN) orchestration. In this network, low-latency all-optical communication based on optical burst switching can be achieved by removing OLT. For supporting this network and guaranteeing the quality of service for TSSs, we design SDN-driven control method and service provision method. Numerical results demonstrate the proposed DAON promotes network service efficiency and avoids traffic congestion.

A Hybrid Approach for Efficient Modeling of Medium-Frequency Propagation in Coal Mines

PubMed Central

Brocker, Donovan E.; Sieber, Peter E.; Waynert, Joseph A.; Li, Jingcheng; Werner, Pingjuan L.; Werner, Douglas H.

2015-01-01

An efficient procedure for modeling medium frequency (MF) communications in coal mines is introduced. In particular, a hybrid approach is formulated and demonstrated utilizing ideal transmission line equations to model MF propagation in combination with full-wave sections used for accurate simulation of local antenna-line coupling and other near-field effects. This work confirms that the hybrid method accurately models signal propagation from a source to a load for various system geometries and material compositions, while significantly reducing computation time. With such dramatic improvement to solution times, it becomes feasible to perform large-scale optimizations with the primary motivation of improving communications in coal mines both for daily operations and emergency response. Furthermore, it is demonstrated that the hybrid approach is suitable for modeling and optimizing large communication networks in coal mines that may otherwise be intractable to simulate using traditional full-wave techniques such as moment methods or finite-element analysis. PMID:26478686

Reduction of ETS-VI Laser Communication Equipment Optical-Downlink Telemetry Collected During GOLD

NASA Technical Reports Server (NTRS)

Toyoshima, M.; Araki, K.; Arimoto, Y.; Toyoda, M.; Jeganathan, M.; Wilson, K.; Lesh, J. R.

1997-01-01

Free-space laser communications experiments were conducted between the laser communication equipment (LCE) on board the Japanese Engineering Test Satellite VI (ETS-VI) and the ground station located at the Table Mountain Facility (TMF) during late 1995 and early 1996. This article describes the on-line data reduction process used to decode LCE telemetry (called E2) downlinked on the optical carrier during the Ground/Orbiter Lasercomm Demonstration (GOLD) experiments. The LCE has the capability of transmitting real-time sensor and status information at 128 kbps by modulating the onboard diode laser. The optical downlink was detected on the ground, bit synchronized, and the resulting data stream stored on a data recorder. The recorded data were subsequently decoded by on-line data processing that included cross-correlation of the known telemetry data format and the downlink data stream. Signals obtained from the processing can be useful not only in evaluating the characteristics of the LCE but also in understanding uplink and downlink signal quality.

Effects of the Use of Millimeter Waves on the Statistics of Writer-to-Reader Delays in Military Communications Systems,

DTIC Science & Technology

1980-12-01

distributions of Figs. 3 and 4 may be fitted quit, accurately by broken straight lines. If we had plotted the differential distributions directly...collection process. These fluctuations are smoothed by replacing the actual differential distribution by the derivative of the fitted broken-line lognormal...for each interval T. The constants in the distribution for each broken section of the lognormal approximations are found by fitting lines to the curve

Recognition and use of line drawings by children with severe intellectual disabilities: the effects of color and outline shape.

PubMed

Stephenson, Jennifer

2009-03-01

Communication symbols for students with severe intellectual disabilities often take the form of computer-generated line drawings. This study investigated the effects of the match between color and shape of line drawings and the objects they represented on drawing recognition and use. The match or non-match between color and shape of the objects and drawings did not have an effect on participants' ability to match drawings to objects, or to use drawings to make choices.

Science communication as political communication

PubMed Central

Scheufele, Dietram A.

2014-01-01

Scientific debates in modern societies often blur the lines between the science that is being debated and the political, moral, and legal implications that come with its societal applications. This manuscript traces the origins of this phenomenon to professional norms within the scientific discipline and to the nature and complexities of modern science and offers an expanded model of science communication that takes into account the political contexts in which science communication takes place. In a second step, it explores what we know from empirical work in political communication, public opinion research, and communication research about the dynamics that determine how issues are debated and attitudes are formed in political environments. Finally, it discusses how and why it will be increasingly important for science communicators to draw from these different literatures to ensure that the voice of the scientific community is heard in the broader societal debates surrounding science. PMID:25225389

Science communication as political communication.

PubMed

Scheufele, Dietram A

2014-09-16

Scientific debates in modern societies often blur the lines between the science that is being debated and the political, moral, and legal implications that come with its societal applications. This manuscript traces the origins of this phenomenon to professional norms within the scientific discipline and to the nature and complexities of modern science and offers an expanded model of science communication that takes into account the political contexts in which science communication takes place. In a second step, it explores what we know from empirical work in political communication, public opinion research, and communication research about the dynamics that determine how issues are debated and attitudes are formed in political environments. Finally, it discusses how and why it will be increasingly important for science communicators to draw from these different literatures to ensure that the voice of the scientific community is heard in the broader societal debates surrounding science.

Progress on the Development of the UAS C2 Link and Supporting Spectrum - from LOS to BLOS

NASA Technical Reports Server (NTRS)

Kerczewski, Robert J.; Griner, James H.; Bishop, William D.; Matolak, David W.; Wilson, Jeffrey D.

2017-01-01

In order to provide for the safe integration of unmanned aircraft systems (UAS) into the National Airspace System, the control and non-payload communications (CNPC) link connecting the ground-based pilot with the unmanned aircraft must be highly reliable and robust, based upon standards that enable certification. Both line-of-sight (LOS) links using terrestrial-based communications and beyond-line-of-sight (BLOS) links using satellite communications are required to support UAS operations. The development of standards has been undertaken by RTCA Special Committee 228 (SC-228), with supporting technical data developed by NASA under the UAS in the National Airspace (NAS) Project. As a result of this work minimum operational performance standards (MOPS) have been completed and published for the LOS CNPC system. The second phase of work, for both NASA and RTCA involves the BLOS CNPC systems. The development of technical data to support MOPS development for UAS BLOS satellite-based CNPC links has now been initiated by NASA, and RTCA SC-228 has organized itself to begin the MOPS development process. This paper will provide an overview of the work that has been completed to date by the Communications Subproject in support of LOS C2 communications for UAS followed by an update of plans and progress for the BLOS phase of the project, with the focus on the UAS C2 spectrum aspects.

Manager-employee interaction in ambulance services: an exploratory study of employee perspectives on management communication.

PubMed

Nordby, Halvor

2015-01-01

Managers of ambulance stations face many communicative challenges in their interaction with employees working in prehospital first-line services. The article presents an exploratory study of how paramedics experience these challenges in communication with station leaders. On the basis of a dialogue perspective in qualitative method, 24 paramedics were interviewed in one-to-one and focus group settings. Naturalistic and phenomenological approaches were used to analyze the interviews. All the paramedics said that they wished to be more involved in decision processes and that station managers should provide better explanations of information "from above." The paramedics understood that it was difficult for the managers to find time for extensive dialogue, but many thought that the managers should give more priority to communication. The paramedics' views correspond to theoretical assumptions in human resource management. According to this model, employees should be involved in decision processes on management levels, as long as it is realistically possible to do so. Furthermore, expressing emotional support and positive attitudes does not take much time, and the study suggests that many ambulance managers should focus more on interpersonal relations to employees. It has been extensively documented that management communication affects organizational performance. The study indicates that managers of ambulance stations should be more aware of how their leadership style affects professional commitment and motivation in the first-line services.

Experimental Investigation on Strengthening of Bolted Connections in Transmission/Communication Towers

NASA Astrophysics Data System (ADS)

Balagopal, R.; Prasad Rao, N.; Rokade, R. P.; Umesha, P. K.

2018-06-01

Due to increase in demand for power supply and increase in bandwidth for communication industry, the existing transmission line (TL) and communication towers needs to be strengthened. The strengthening of existing tower is economical rather than installation of new towers due to constraints in acquisition of land. The size of conductors have to be increased or additional number of antenna needs to be installed in existing TL/communication tower respectively. The compression and tension capacity of members in the existing towers have to be increased to sustain the additional loads due to wind and self-weight of these components. The tension capacity enhancement of existing angle sections in live line condition without power shut-down is a challenging task. In the present study, the use of Glass Fiber Reinforced Plastic (GFRP) plate/angle sections is explored to strengthen existing bolted connections in TL/communication towers. Experimental investigation conducted at component level on strengthening of existing two types of single cover steel butt joint, one made of steel plate and another joint made of steel angle sections respectively. First series of experiment conducted on strengthening the connection using GFRP plate/cleat angle sections. The second series of strengthening experiment is conducted using steel plate/angle sections to replace GFRP sections. The load sharing behaviour of strengthened GFRP and steel section is compared and suitable recommendations are given.

Experimental Investigation on Strengthening of Bolted Connections in Transmission/Communication Towers

NASA Astrophysics Data System (ADS)

Balagopal, R.; Prasad Rao, N.; Rokade, R. P.; Umesha, P. K.

2018-02-01

Due to increase in demand for power supply and increase in bandwidth for communication industry, the existing transmission line (TL) and communication towers needs to be strengthened. The strengthening of existing tower is economical rather than installation of new towers due to constraints in acquisition of land. The size of conductors have to be increased or additional number of antenna needs to be installed in existing TL/communication tower respectively. The compression and tension capacity of members in the existing towers have to be increased to sustain the additional loads due to wind and self-weight of these components. The tension capacity enhancement of existing angle sections in live line condition without power shut-down is a challenging task. In the present study, the use of Glass Fiber Reinforced Plastic (GFRP) plate/angle sections is explored to strengthen existing bolted connections in TL/communication towers. Experimental investigation conducted at component level on strengthening of existing two types of single cover steel butt joint, one made of steel plate and another joint made of steel angle sections respectively. First series of experiment conducted on strengthening the connection using GFRP plate/cleat angle sections. The second series of strengthening experiment is conducted using steel plate/angle sections to replace GFRP sections. The load sharing behaviour of strengthened GFRP and steel section is compared and suitable recommendations are given.

Preliminary analysis of pilot ratings of 'part line' information importance

NASA Technical Reports Server (NTRS)

Pritchett, Amy; Hansman, R. John

1993-01-01

With the introduction of digital datalink communications into the Air Traffic Control (ATC) system, there is concern over the potential loss of situational awareness by flight crews due to the reduction in the 'Party Line Information' (PLI). This information is available to the pilot by overhearing communications between ATC and other aircraft. A survey was distributed to determine current PLI use by several pilot operational groups, experience levels and geographic regions. The survey identified numerous important elements. PLI was rated the highest for operations near or on approach to the airport. Several significant variations were found between pilots from different operational groups and experience levels. Traffic and weather information were the most frequently cited as information required to obtain global situation awareness.

Preliminary Analysis of Pilot Ratings of "Party Line" Information Importance

NASA Technical Reports Server (NTRS)

Pritchett, Amy; Hansman, R. John

1993-01-01

With the introduction of digital data link communications into the ATC system, there is concern over the potential loss of situational awareness by flight crews due to the reduction in the 'Party Line' Information (PLI). This information is available to the pilot by overhearing communications between ATC and other aircraft. A survey was distributed to determine current PLI use by several pilot operational groups, experience levels and geographic regions. The survey identified numerous important elements. PLI was rated the highest for operations near or on approach to the airport. Several significant variations were found between pilots from different operational groups and experience levels. Traffic and weather information were the most frequently cited as information required to obtain global situation awareness.

In-depth characterization of the secretome of mouse CNS cell lines by LC-MS/MS without prefractionation.

PubMed

Woo, Jongmin; Han, Dohyun; Park, Joonho; Kim, Sang Jeong; Kim, Youngsoo

2015-11-01

Microglia, astrocytes, and neurons, which have important functions in the central nervous system (CNS), communicate mutually to generate a signal through secreted proteins or small molecules, but many of which have not been identified. Because establishing a reference for the secreted proteins from CNS cells could be invaluable in examining cell-to-cell communication in the brain, we analyzed the secretome of three murine CNS cell lines without prefractionation by high-resolution mass spectrometry. In this study, 2795 proteins were identified from conditioned media of the three cell lines, and 2125 proteins were annotated as secreted proteins by bioinformatics analysis. Further, approximately 500 secreted proteins were quantifiable as differentially expressed proteins by label-free quantitation. As a result, our secretome references are useful datasets for the future study of neuronal diseases. All MS data have been deposited in the ProteomeXchange with identifier PXD001597 (http://proteomecentral.proteomexchange.org/dataset/PXD001597). © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Combining Teletherapy and On-line Language Exercises in the Treatment of Chronic Aphasia: An Outcome Study

PubMed Central

STEELE, RICHARD D.; BAIRD, ALLISON; MCCALL, DENISE; HAYNES, LISA

2015-01-01

We report a 12-week outcome study in which nine persons with long-term chronic aphasia received individual and group speech-language teletherapy services, and also used on-line language exercises to practice from home between therapy sessions. Participants were assessed at study initiation and completion using the Western Aphasia Battery, a portion of the Communicative Effectiveness Index, ASHA National Outcome Measurement System, and RIC Communication Confidence Rating Scale for Aphasia; additionally participants were polled regarding satisfaction at discharge. Pretreatment and post-treatment means were calculated and compared, and matched t-tests were used to determine significance of improvements following treatment, with patterns of independent on-line activity analyzed. Analysis of scores shows that means improved on most measures following treatment, generally significantly: the WAB AQ improved +3.5 (p = .057); the CETI Overall (of items administered) — +17.8 (p = .01), and CCRSA Overall — + 10.4 (p = .0004). Independent work increased with time, and user satisfaction following participation was high. PMID:25945225

Improving Communications Systems

NASA Technical Reports Server (NTRS)

1997-01-01

The Space Shuttle has many communications systems which are used throughout a typical mission. Given that the radio spectrum has become increasingly congested, the ability to hear extremely weak signals requires greater receiver sensitivity. Dryden Flight Research Center approached Angle Linear, a manufacturer of linear radio frequency products and peripherals for communications, to solve the problem. The solution was a receiving preamplifier specially crafted for NASA. Communications with the Space Shuttle are now more reliable,with Dryden being able to also support local missions without purchasing additional equipment. The work has carried over into the Mir Space Station communication support effort and is under evaluation by other NASA centers. The company's preamplifier line was greatly expanded to cover a broader range of frequencies, providing the same sensational improvement to other areas of communication including business, government, trucking, land mobile, cellular and broadcast.

HERMES: Collaboration and Knowledge Interoperability in Maritime Interdiction Operations

DTIC Science & Technology

2011-03-09

be loaded as new  canvases  or set as links from an existing  canvas . This capability is useful for exchanging image files,  such as  fingerprints  and...propertie ied and imple E  canvases , 2 uggested by   ox onto a can rs do not nee uch easier to ers and colu us easy to ob  for task step and procedu d...different symbols onto a  canvas  from a  palette. The specific symbols are pre‐loaded for a specific mission or domain. They can include basic  military

[Concept of "opinion leader": Recommendations of the Committee on Ethics and Transparency in the Medical-Industry Relationship (CETREMI) of the National Academy of Medicine (ANM)].

PubMed

Burgos, Rubén; Aguilar-Salinas, Carlos Alberto; Barile-Fabris, Leonor; Rangel-Fraustro, Manuel Sigfrido; Arrieta, Óscar; Campillo, Carlos; Celis, Miguel Ángel; Llata, Manuel de la; Domínguez, Judith; Halabe, José; Islas, Sergio; Jasso, Luis; Lifshitz, Alberto; Moreno, Mucio; Plancarte, Ricardo; Reyes, Alejandro; Soda, Antonio; Verástegui, Emma; Sotelo, Julio

2017-01-01

La relación que involucra al médico y la industria abarca un espectro amplio de formas, para lo cual se requiere una exposición clara y transparente de términos y principios. Uno de los objetivos primordiales de la industria es contar con un respaldo académico que le permita dar a conocer las características y las propiedades de sus productos -eficacia, eficiencia y seguridad- con el propósito de ser prescritos y usados. Los fines de la industria son la venta de sus productos, el reconocimiento como empresas de prestigio y la ganancia económica. Implícitamente, para CETREMI el principio de mayor importancia en esta relación es indudablemente el beneficio del enfermo.

Performances and recent evolutions of EMSC Real Time Information services

NASA Astrophysics Data System (ADS)

Mazet-Roux, G.; Godey, S.; Bossu, R.

2009-04-01

The EMSC (http://www.emsc-csem.org) operates Real Time Earthquake Information services for the public and the scientific community which aim at providing rapid and reliable information on the seismic-ity of the Euro-Mediterranean region and on significant earthquakes worldwide. These services are based on parametric data rapidly provided by 66 seismological networks which are automatically merged and processed at EMSC. A web page which is updated every minute displays a list and a map of the latest earthquakes as well as additional information like location maps, moment tensors solutions or past regional seismicity. Since 2004, the performances and the popularity of these services have dramatically increased. The number of messages received from the contributors and the number of published events have been multiplied by 2 since 2004 and by 1.6 since 2005 respectively. The web traffic and the numbers of users of the Earthquake Notification Service (ENS) have been multiplied by 15 and 7 respectively. In terms of performances of the ENS, the median dissemination time for Euro-Med events is minutes in 2008. In order to further improve its performances and especially the speed and robustness of the reception of real time data, EMSC has recently implemented a software named QWIDS (Quake Watch Information Distribution System) which provides a quick and robust data exchange system through permanent TCP connections. At the difference with emails that can sometimes be delayed or lost, QWIDS is an actual real time communication system that ensures the data delivery. In terms of hardware, EMSC imple-mented a high availability, dynamic load balancing, redundant and scalable web servers infrastructure, composed of two SUN T2000 and one F5 BIG-IP switch. This will allow coping with constantly increas-ing web traffic and the occurrence of huge peaks of traffic after widely felt earthquakes.

Imaging system design for improved information capacity

NASA Technical Reports Server (NTRS)

Fales, C. L.; Huck, F. O.; Samms, R. W.

1984-01-01

Shannon's theory of information for communication channels is used to assess the performance of line-scan and sensor-array imaging systems and to optimize the design trade-offs involving sensitivity, spatial response, and sampling intervals. Formulations and computational evaluations account for spatial responses typical of line-scan and sensor-array mechanisms, lens diffraction and transmittance shading, defocus blur, and square and hexagonal sampling lattices.

Deployable radiator with flexible line loop

NASA Technical Reports Server (NTRS)

Keeler, Bryan V. (Inventor); Lehtinen, Arthur Mathias (Inventor); McGee, Billy W. (Inventor)

2003-01-01

Radiator assembly (10) for use on a spacecraft (12) is provided including at least one radiator panel assembly (26) repeatably movable between a panel stowed position (28) and a panel deployed position (36), at least two flexible lines (40) in fluid communication with the at least one radiator panel assembly (26) and repeatably movable between a stowage loop (42) and a flattened deployed loop (44).

Walking the Line between Reality and Fiction in Online Spaces: Understanding the Effects of Narrative Transportation

ERIC Educational Resources Information Center

Gretter, Sarah; Yadav, Aman; Gleason, Benjamin

2017-01-01

Recent contentions about "fake news" and misinformation online has shed light on the critical need for media literacy at a global scale. Indeed, digital stories are one of the main forms of communication in the 21st century through blogs, videos-sharing websites, forums, or social networks. However, the line between facts and fiction can…

Communication: Diffusion constant in supercooled water as the Widom line is crossed in no man's land

NASA Astrophysics Data System (ADS)

Ni, Yicun; Hestand, Nicholas J.; Skinner, J. L.

2018-05-01

According to the liquid-liquid critical point (LLCP) hypothesis, there are two distinct phases of supercooled liquid water, namely, high-density liquid and low-density liquid, separated by a coexistence line that terminates in an LLCP. If the LLCP is real, it is located within No Man's Land (NML), the region of the metastable phase diagram that is difficult to access using conventional experimental techniques due to rapid homogeneous nucleation to the crystal. However, a recent ingenious experiment has enabled measurement of the diffusion constant deep inside NML. In the current communication, these recent measurements are compared, with good agreement, to the diffusion constant of E3B3 water, a classical water model that explicitly includes three-body interactions. The behavior of the diffusion constant as the system crosses the Widom line (the extension of the liquid-liquid coexistence line into the one-phase region) is analyzed to derive information about the presence and location of the LLCP. Calculations over a wide range of temperatures and pressures show that the new experimental measurements are consistent with an LLCP having a critical pressure of over 0.6 kbar.

Using VoiceThread to Promote Collaborative Learning in On-Line Clinical Nurse Leader Courses.

PubMed

Fox, Ola H

The movement to advance the clinical nurse leader (CNL) as an innovative new role for meeting higher health care quality standards continues with CNL programs offered on-line at colleges and universities nationwide. Collaborative learning activities offer the opportunity for CNL students to gain experience in working together in small groups to negotiate and solve care process problems. The challenge for nurse educators is to provide collaborative learning activities in an asynchronous learning environment that can be considered isolating by default. This article reports on the experiences of 17 CNL students who used VoiceThread, a cloud-based tool that allowed them to communicate asynchronously with one another through voice comments for collaboration and sharing knowledge. Participants identified benefits and drawbacks to using VoiceThread for collaboration as compared to text-based discussion boards. Students reported that the ability to hear the voice of their peers and the instructor helped them feel like they were in a classroom communicating with "real" instructor and peers. Students indicated a preference for on-line classes that used VoiceThread discussions to on-line classes that used only text-based discussion boards. Copyright © 2016 Elsevier Inc. All rights reserved.

Specificity of gap junction communication among human mammary cells and connexin transfectants in culture

PubMed Central

1993-01-01

In a previous paper (Lee et al., 1992), it was shown that normal human mammary epithelial cells (NMEC) express two connexin genes, Cx26 and Cx43, whereas neither gene is transcribed in a series of mammary tumor cell lines (TMEC). In this paper it is shown that normal human mammary fibroblasts (NMF) communicate and express Cx43 mRNA and protein. Transfection of either Cx26 or Cx43 genes into a tumor line, 21MT-2, induced the expression of the corresponding mRNAs and proteins as well as communication via gap junctions (GJs), although immunofluorescence demonstrated that the majority of Cx26 and Cx43 proteins present in transfected TMEC was largely cytoplasmic. Immunoblotting demonstrated that NMEC, NMF, and transfected TMEC each displayed a unique pattern of posttranslationally modified forms of Cx43 protein. The role of different connexins in regulating gap junction intercellular communication (GJIC) was examined using a novel two-dye method to assess homologous and heterologous communication quantitatively. The recipient cell population was prestained with a permanent non-toxic lipophilic dye that binds to membranes irreversibly (PKH26, Zynaxis); and the donor population is treated with a GJ-permeable dye Calcein, a derivative of fluorescein diacetate (Molecular Probes). After mixing the two cell populations under conditions promoting GJ formation, cells were analyzed by flow cytometry to determine the percentage of cells containing both dyes. It is shown here that Cx26 and Cx43 transfectants display strong homologous communication, as do NMEC and NMF. Furthermore, NMEC mixed with NMF communicate efficiently, Cx26 transfectants communicate with NMEC but not with NMF, and Cx43 transfectants communicate with NMF. Communication between Cx26 TMEC transfectants and NMEC was asymetrical with preferential movement of calcein from TMEC to NMEC. Despite the presence of Cx43 as well as Cx26 encoded proteins in the GJs of NMEC, few Cx43 transfectants communicated with NMEC. No heterologous GJIC was observed between Cx26- and Cx43-transfected TMEC suggesting that heterotypic GJs do not form or that Cx26/Cx43 channels do not permit dye transfer. PMID:8391000

CrossTalk. The Journal of Defense Software Engineering. Volume 25, Number 6

DTIC Science & Technology

2012-12-01

Cyber Security Threat Definition Communicable Noncommunicable Based on Risky Behavior Coordinated Trojan horse programs Threats hidden in a...for Cyber Security Threats Cyber Security Threat Communicable Noncommunicable Risky Behaviors Coordinated Type of Intervention (at the System...types of data are breached. Further, educational materials on risky behaviors (e.g., for home Internet users) as well as recommended guide- lines for

Empowering First Responders - Peer-to-Peer Technology

DTIC Science & Technology

2004-04-01

the scene was challenging. Radio traffic overwhelmed the system to the extent that foot messengers became the most reliable means of communicating...sources of information critical to the incident at hand without the intervening “dispatcher” levels of interference. 14 The Challenge of Limited... hands of the front-line first responders. The proliferation of wireless communications and computers in the hands of first-responders continues

Coast Guard Polar Icebreaker Modernization: Background and Issues for Congress

DTIC Science & Technology

2013-04-25

Accountability Office, Coast Guard[:]Efforts to Identify Arctic Requirements Are Ongoing, but More Communication about Agency Planning Efforts Would...control, and communications capabilities. The flexibility and mobility of polar icebreakers would assist the Coast Guard in closing future mission...Sea to prevent foreign fishing in U.S. waters and overfishing —Capability to conduct search and rescue in Beaufort Sea for cruise line and natural

Eye-Tracking Measures Reveal How Changes in the Design of Aided AAC Displays Influence the Efficiency of Locating Symbols by School-Age Children without Disabilities

ERIC Educational Resources Information Center

Wilkinson, Krista M.; O'Neill, Tara; McIlvane, William J.

2014-01-01

Purpose: Many individuals with communication impairments use aided augmentative and alternative communication (AAC) systems involving letters, words, or line drawings that rely on the visual modality. It seems reasonable to suggest that display design should incorporate information about how users attend to and process visual information. The…

Framing Interculturality: A Corpus-Based Analysis of Online Promotional Discourse of Higher Education Intercultural Communication Courses

ERIC Educational Resources Information Center

Hua, Zhu; Handford, Michael; Young, Tony Johnstone

2017-01-01

This paper examines how intercultural communication (ICC) and the notion of culture are framed in on-line promotional discourse of higher education (HE) ICC courses. It analyses a specialised corpus comprised of 14,842 words from 43 course websites of master's programmes in ICC in the UK and the US--internationally, the two largest providers of…

Performance Limits of Non-Line-of-Sight Optical Communications

DTIC Science & Technology

2015-05-01

high efficiency solar blind photo detectors. In this project, we address the main challenges towards optimizing the UV communication system...LEDs), solar blind filters, and high efficiency solar blind photo detectors. In this project, we address the main challenges towards optimizing the UV...solar blind filters, and high efficiency solar blind photo detectors. In this project, we address the main challenges towards optimizing the UV

Protection of Merchant Shipping

DTIC Science & Technology

1990-05-08

World War II. Engineering, communications and navigation systems have become technologically sophisticated. However, few of these changes can be...reliance on sea lines of communication to maintain its trade with its allies world wide. Freedom of the seas has historically been of such importance to...were forgotten.4 Since its founding in 1798, political and military developments have resulted in the expansion of the mission assigned the U.S. Navy

Communication-avoiding symmetric-indefinite factorization

DOE PAGES

Ballard, Grey Malone; Becker, Dulcenia; Demmel, James; ...

2014-11-13

We describe and analyze a novel symmetric triangular factorization algorithm. The algorithm is essentially a block version of Aasen's triangular tridiagonalization. It factors a dense symmetric matrix A as the product A=PLTL TP T where P is a permutation matrix, L is lower triangular, and T is block tridiagonal and banded. The algorithm is the first symmetric-indefinite communication-avoiding factorization: it performs an asymptotically optimal amount of communication in a two-level memory hierarchy for almost any cache-line size. Adaptations of the algorithm to parallel computers are likely to be communication efficient as well; one such adaptation has been recently published. Asmore » a result, the current paper describes the algorithm, proves that it is numerically stable, and proves that it is communication optimal.« less

Communication-avoiding symmetric-indefinite factorization

DOE Office of Scientific and Technical Information (OSTI.GOV)

Ballard, Grey Malone; Becker, Dulcenia; Demmel, James

We describe and analyze a novel symmetric triangular factorization algorithm. The algorithm is essentially a block version of Aasen's triangular tridiagonalization. It factors a dense symmetric matrix A as the product A=PLTL TP T where P is a permutation matrix, L is lower triangular, and T is block tridiagonal and banded. The algorithm is the first symmetric-indefinite communication-avoiding factorization: it performs an asymptotically optimal amount of communication in a two-level memory hierarchy for almost any cache-line size. Adaptations of the algorithm to parallel computers are likely to be communication efficient as well; one such adaptation has been recently published. Asmore » a result, the current paper describes the algorithm, proves that it is numerically stable, and proves that it is communication optimal.« less

Control and Non-Payload Communications (CNPC) Prototype Radio - Generation 2 Flight Test Report

NASA Technical Reports Server (NTRS)

Ishac, Joseph A.; Iannicca, Dennis C.; Shalkhauser, Kurt A.; Kachmar, Brian A.

2014-01-01

NASA Glenn Research Center conducted a series of flight tests for the purpose of evaluating air-to-ground communications links for future unmanned aircraft systems (UAS). The primary objective of the test effort was to evaluate the transition of the aircraft communications from one ground station to the next, and to monitor data flow during the "hand-off" event. To facilitate the testing, ground stations were installed at locations in Cleveland, Ohio and Albany, Ohio that each provides line-of-sight radio communications with an overflying aircraft. This report describes results from the flight tests including flight parameters, received signal strength measurements, data latency times, and performance observations for the air-to-ground channel.

Improved productivity through interactive communication

NASA Technical Reports Server (NTRS)

Marino, P. P.

1985-01-01

New methods and approaches are being tried and evaluated with the goal of increasing productivity and quality. The underlying concept in all of these approaches, methods or processes is that people require interactive communication to maximize the organization's strengths and minimize impediments to productivity improvement. This paper examines Bendix Field Engineering Corporation's organizational structure and experiences with employee involvement programs. The paper focuses on methods Bendix developed and implemented to open lines of communication throughout the organization. The Bendix approach to productivity and quality enhancement shows that interactive communication is critical to the successful implementation of any productivity improvement program. The paper concludes with an examination of the Bendix methodologies which can be adopted by any corporation in any industry.

Reliability of telecommunications systems following a major disaster: survey of secondary and tertiary emergency institutions in Miyagi Prefecture during the acute phase of the 2011 Great East Japan Earthquake.

PubMed

Kudo, Daisuke; Furukawa, Hajime; Nakagawa, Atsuhiro; Abe, Yoshiko; Washio, Toshikatsu; Arafune, Tatsuhiko; Sato, Dai; Yamanouchi, Satoshi; Ochi, Sae; Tominaga, Teiji; Kushimoto, Shigeki

2014-04-01

Telecommunication systems are important for sharing information among health institutions to successfully provide medical response following disasters. The aim of this study was to clarify the problems associated with telecommunication systems in the acute phase of the Great East Japan Earthquake (March 11, 2011). All 72 of the secondary and tertiary emergency hospitals in Miyagi Prefecture were surveyed to evaluate the telecommunication systems in use during the 2011 Great Japan Earthquake, including satellite mobile phones, multi-channel access (MCA) wireless systems, mobile phones, Personal Handy-phone Systems (PHS), fixed-line phones, and the Internet. Hospitals were asked whether the telecommunication systems functioned correctly during the first four days after the earthquake, and, if not, to identify the cause of the malfunction. Each telecommunication system was considered to function correctly if the hospital staff could communicate at least once in every three calls. Valid responses were received from 53 hospitals (73.6%). Satellite mobile phones functioned correctly at the highest proportion of the equipped hospitals, 71.4%, even on Day 0. The MCA wireless system functioned correctly at the second highest proportion of the equipped hospitals. The systems functioned correctly at 72.0% on Day 0 and at 64.0% during Day 1 through Day 3. The main cause of malfunction of the MCA wireless systems was damage to the base station or communication lines (66.7%). Ordinary (personal or general communication systems) mobile phones did not function correctly at any hospital until Day 2, and PHS, fixed-line phones, and the Internet did not function correctly at any area hospitals that were severely damaged by the tsunami. Even in mildly damaged areas, these systems functioned correctly at <40% of the hospitals during the first three days. The main causes of malfunction were a lack of electricity (mobile phones, 25.6%; the Internet, 54.8%) and damage to the base stations or communication lines (the Internet, 38.1%; mobile phones, 56.4%). Results suggest that satellite mobile phones and MCA wireless systems are relatively reliable and ordinary systems are less reliable in the acute period of a major disaster. It is important to distribute reliable disaster communication equipment to hospitals and plan for situations in which hospital telecommunications systems do not function.

The effect of color on the recognition and use of line drawings by children with severe intellectual disabilities.

PubMed

Stephenson, Jennifer

2007-03-01

Line drawings are commonly used as communication symbols for individuals with severe intellectual disabilities. This study investigated the effect of color on the recognition and use of line drawings by young children with severe intellectual disabilities and poor verbal comprehension who were beginning picture users. Drawings where the color of the picture matched the object and where the color of the drawing did not match the object were used, as well as black and white line drawings. Tentative findings suggest that some students with intellectual disabilities may find it more difficult to recognize and line drawings where the color does not match the object compared to line drawings where the color of the drawing does match the color of the object.

Project - line interaction implementing projects in JPL's Matrix

NASA Technical Reports Server (NTRS)

Baroff, Lynn E.

2006-01-01

Can programmatic and line organizations really work interdependently, to accomplish their work as a community? Does the matrix produce a culture in which individuals take personal responsibility for both immediate mission success and long-term growth? What is the secret to making a matrix enterprise actually work? This paper will consider those questions, and propose that developing an effective project-line partnership demands primary attention to personal interactions among people. Many potential problems can be addressed by careful definition of roles, responsibilities, and work processes for both parts of the matrix -- and by deliberate and clear communication between project and line organizations and individuals.

Research on cognitive, social and cultural processes of written communication.

PubMed

Arroyo González, Rosario; Salvador Mata, Francisco

2009-08-01

This article compiles the investigations carried out by a Research Group of the University of Granada, Spain. Its different projects on writing's cognitive social and cultural processes have been supported by the Spanish Government. This line of research joined together linguistic, psychological, social and cultural contributions to the development of writing from the 1970s. Currently, this line of research develops in collaboration with other European Universities: (a) Interuniversity Centre for Research On Cognitive Processing in Natural and Artificial Systems (ECONA), "La Sapienza" University of Rome (Italy); (b) Anadolu University, (Eskisehir, Turkey); (c) Coimbra University (Portugal); (d) University of Zaragoza (Spain); (e) the Institute of Education of the University of London (United Kingdom). The aforementioned collaboration is materializing into projects like the International Master on Multilingual Writing: Cognitive, Intercultural and Technological Processes of Written Communication ( http://www.multilingualwriting.com ) and the International Congress: Writing in the twenty-first Century: Cognition, Multilinguisim and Technologies, held in Granada ( http://www.asprogrades.org ). This research line is focussed on the development of strategies in writing development, basic to train twenty-first century societies' citizens. In these societies, participation in production media, social exchange and the development of multilingual written communication skills through new computer technologies spread multicultural values. In order to fulfil the social exigencies, it is needed to have the collaboration of research groups for designing and applying international research projects.

A synchronous serial bus for multidimensional array acoustic logging tool

NASA Astrophysics Data System (ADS)

Men, Baiyong; Ju, Xiaodong; Lu, Junqiang; Qiao, Wenxiao

2016-12-01

In high-temperature and spatial borehole applications, a distributed structure is employed in a multidimensional array acoustic logging tool (MDALT) based on a phased array technique for electronic systems. However, new challenges, such as synchronous multichannel data acquisition, multinode real-time control and bulk data transmission in a limited interval, have emerged. To address these challenges, we developed a synchronous serial bus (SSB) in this study. SSB works in a half-duplex mode via a master-slave architecture. It also consists of a single master, several slaves, a differential clock line and a differential data line. The clock line is simplex, whereas the data line is half-duplex and synchronous to the clock line. A reliable communication between the master and the slaves with real-time adjustment of synchronisation is achieved by rationally designing the frame format and protocol of communication and by introducing a scramble code and a Hamming error-correcting code. The control logic of the master and the slaves is realized in field programmable gate array (FPGA) or complex programmable logic device (CPLD). The clock speed of SSB is 10 MHz, the effective data rate of the bulk data transmission is over 99%, and the synchronous errors amongst the slaves are less than 10 ns. Room-temperature test, high-temperature test (175 °C) and field test demonstrate that the proposed SSB is qualified for MDALT.

The first 100 feet: New options for Internet and broadband access. Final report, June 1, 1996--January 31, 1998

DOE Office of Scientific and Technical Information (OSTI.GOV)

Branscomb, L.; Hurley, D.; Keller, J.

1998-04-01

This project was undertaken to explore new options for connecting homes and small businesses to high-speed communications networks, such as the Internet. Fundamental to this inquiry was an interest in looking at options which are newly enabled through changes in technology and regulation, and which go beyond the traditional topdown, centralized model for local access. In particular, the authors focused on opportunities for end-user and community-level investment. This project was intended to investigate the opportunities presented by the decreasing cost of computing and networking platforms, the unbundling of local exchange network elements, and the intelligent endpoints model of networking bestmore » exemplified by the Internet. Do these factors, along with communications technologies such as spread spectrum wireless, digital subscriber line services, and the ability to modulate a communications signal over the electric power line infrastructure, enable new models for end-user investment in intelligent infrastructure as a leverage point for accessing the broadband network? This question was first explored through a two-day conference held at the Freedom Forum in Arlington, Virginia, October 29 and 30, 1996. The workshop addressed issues in the consumer adoption of new communications technologies, use of the electric power line infrastructure, the role of municipalities, and the use of alternative technologies, such as XDSL, satellite, spread spectrum wireless, LMDS, and others. The best of these papers have been further developed, with editorial guidance provided by Harvard, and compiled in the form of a book (The First 100 Feet: New Options for Internet and Broadband Access, Deborah Hurley and James Keller, eds., MIT Press, 1998) to be published as part of the MIT Press Spring 1998 catalogue. A summary of topics covered by the book is given in this report.« less

Advancement of 31P Magnetic Resonance Spectroscopy Using GRAPPA Reconstruction on a 3D Volume

NASA Astrophysics Data System (ADS)

Clevenger, Tony

The overall objective of this research is to improve currently available metabolic imaging techniques for clinical use in monitoring and predicting treatment response to radiation therapy in liver cancer. Liver metabolism correlates with inflammatory and neoplastic liver diseases, which alter the intracellular concentration of phosphorus- 31 (31P) metabolites [1]. It is assumed that such metabolic changes occur prior to physical changes of the tissue. Therefore, information on regional changes of 31P metabolites in the liver, obtained by Magnetic Resonance Spectroscopic Imaging (MRSI) [1,2], can help in diagnosis and follow-up of various liver diseases. Specifically, there appears to be an immediate need of this technology for both the assessment of tumor response in patients with Hepatocellular Carcinoma (HCC) treated with Stereotactic Body Radiation Therapy (SBRT) [3--5], as well as assessment of radiation toxicity, which can result in worsening liver dysfunction [6]. Pilot data from our lab has shown that 31P MRSI has the potential to identify treatment response five months sooner than conventional methods [7], and to assess the biological response of liver tissue to radiation 24 hours post radiation therapy [8]. While this data is very promising, commonly occurring drawbacks for 31P MRSI are patient discomfort due to long scan times and prone positioning within the scanner, as well as reduced data quality due to patient motion and respiration. To further advance the full potential of 31P MRSI as a clinical diagnostic tool in the management of liver cancer, this PhD research project had the following aims: I) Reduce the long acquisition time of 3D 31P MRS by formulating and imple- menting an appropriate GRAPPA undersampling scheme and reconstruction on a clinical MRI scanner II) Testing and quantitative validation of GRAPPA reconstruction on 3D 31P MRSI on developmental phantoms and healthy volunteers At completion, this work should considerably advance 31P MRSI as a clinical diagnos- tic tool for liver cancer, and potentially other cancer types, by reducing the amount of time needed to get relevant data for treatment efficacy of SBRT patients. Imple- mentation of this work into our ongoing clinical study will further provide insights into whether the 31P MSRI method can be an early predictor of normal tissue toxicity and/or treatment response.

VibeComm: radio-free wireless communication for smart devices using vibration.

PubMed

Hwang, Inhwan; Cho, Jungchan; Oh, Songhwai

2014-11-10

This paper proposes VibeComm, a novel communication method for smart devices using a built-in vibrator and accelerometer. The proposed approach is ideal for low-rate off-line communication, and its communication medium is an object on which smart devices are placed, such as tables and desks. When more than two smart devices are placed on an object and one device wants to transmit a message to the other devices, the transmitting device generates a sequence of vibrations. The vibrations are propagated through the object on which the devices are placed. The receiving devices analyze their accelerometer readings to decode incoming messages. The proposed method can be the alternative communication method when general types of radio communication methods are not available. VibeComm is implemented on Android smartphones, and a comprehensive set of experiments is conducted to show its feasibility.

Environmental Assessment for Fiber Optic Diverse Route

DTIC Science & Technology

2010-07-24

and the military working dogs training and kennel areas. Currently, a single fiber optic communications line exists that transmits all...agreement from the County to trench along the New Santa Fe Trail. However, signs will be posted two weeks before construction begins in designated ... Plan . Heavy equipment and other vehicles associated with the trench line construction will contain hazardous materials such as motor oil and gasoline

25 CFR 169.26 - Telephone and telegraph lines; radio, television, and other communications facilities.

Code of Federal Regulations, 2010 CFR

2010-04-01

... width in excess of 50 feet on each side of the centerline, unless special requirements are clearly set forth in the application which fully justify a width in excess of 50 feet on each side of the centerline... from those showing the line of route, and shall be drawn to a scale of 50 feet to an inch. Such maps...

25 CFR 169.26 - Telephone and telegraph lines; radio, television, and other communications facilities.

Code of Federal Regulations, 2011 CFR

2011-04-01

... width in excess of 50 feet on each side of the centerline, unless special requirements are clearly set forth in the application which fully justify a width in excess of 50 feet on each side of the centerline... from those showing the line of route, and shall be drawn to a scale of 50 feet to an inch. Such maps...

Short Range 10 Gb/s THz Communications. Proof of Concept Phase 2

DTIC Science & Technology

2011-12-01

heterodyned are phase locked to spectral lines selected from the optical frequency comb generator (OFCG) using optical phase locked loops ( OPLLs ) or by...systems by optical heterodyne generation (OHG), in which the outputs of two phase - locked lasers are combined, and detection in a fast photodiode, such... Heterodyning of two CW optical signals, each phase locked to lines in an

Experimental semiotics: a review.

PubMed

Galantucci, Bruno; Garrod, Simon

2011-01-01

In the last few years a new line of research has appeared in the literature. This line of research, which may be referred to as experimental semiotics (ES; Galantucci, 2009; Galantucci and Garrod, 2010), focuses on the experimental investigation of novel forms of human communication. In this review we will (a) situate ES in its conceptual context, (b) illustrate the main varieties of studies thus far conducted by experimental semioticians, (c) illustrate three main themes of investigation which have emerged within this line of research, and (d) consider implications of this work for cognitive neuroscience.

Experimental Semiotics: A Review

PubMed Central

Galantucci, Bruno; Garrod, Simon

2010-01-01

In the last few years a new line of research has appeared in the literature. This line of research, which may be referred to as experimental semiotics (ES; Galantucci, 2009; Galantucci and Garrod, 2010), focuses on the experimental investigation of novel forms of human communication. In this review we will (a) situate ES in its conceptual context, (b) illustrate the main varieties of studies thus far conducted by experimental semioticians, (c) illustrate three main themes of investigation which have emerged within this line of research, and (d) consider implications of this work for cognitive neuroscience. PMID:21369364

[Microbial settlement of paint- and building-materials in the sphere of drinking water. 5. Communication: Macrocolonies on the cement mortar lining in a water main (author's transl)].

PubMed

Schoenen, D

1980-09-01

It is reported a microbial growth in form of macrocolonies on a cement mortar line in a potable water main. Simultaneously an increase of bacterial content in the water could be observed. The bacterial content could be reduced by chlorination, but the microbial growth on the surface of the lining was not suppressed. Macrocolonies could be observed the same as before at the last inspection 6 1/2 years after opening of the main.

Demonstrating and Communicating Research Impact. Preparing NIOSH Programs for External Review

DTIC Science & Technology

2009-01-01

and Communicating Research Impact Type Program NIOSH cross-sector (continued) Traumatic Injury Work Organization and Stress-Related Disorders Worklife ...tools, such as italics, bolded text, dashed lines, and colors, can be used to indicate subtle differences. However, finding the balance between the... balancing the potential value and risk of individual programs within a portfolio against an explicitly defined set of goals. There are several methods

Effective Use of Collaborative Information Technology to Enhance Group Performance

DTIC Science & Technology

2004-09-01

Estimating Nonresponse Bias in Mail Surveys,” Journal of Marketing Research , 19, (1976), pp. 396-402. Bandura, A., Self-efficacy: The exercise of...Marketing Constructs,” Journal of Marketing Research , 16, 1, (1979), pp. 64-73. Communication News, “Web Meetings Benefit Bottom Line,” Communication News...Efforts: Collaboration Processes in Buyer-Supplier Relationships,” Journal of Marketing Research , 36, (1999), 461-475. Jap, S. D., “Perspectives on

Real-Time Speaker Detection for User-Device Binding

DTIC Science & Technology

2010-12-01

31 xi THIS PAGE INTENTIONALLY LEFT BLANK xii CHAPTER 1: Introduction The roll-out of commercial wireless networks continues to rise worldwide...in a secured facility. It could also be connected to the call server via a Virtual Private Network (VPN) or public lines if security is not a top...communications network [25]. Yet, James Arden Barnett, Jr., Chief of the Public Safety and Homeland Security Bureau, argues that emergency communications

Officer Career Development: Reactions of Two Unrestricted Line Communities to Detailers

DTIC Science & Technology

1987-08-01

self - esteem scale ( Rosenberg , 1979) (Cronbach alpha = .82). Evaluation of Job History (Box 2)^ 1. "What is your evaluation of the following...rating scales , which are vulnerable to "leniency error" (Kerlinger, 1965 ). That is, constituents may have evaluated detailers more favorably than they...communication in bargaining. Human Communication Research, 8^, 262-280. Rosenberg , M. (1979). Conceiving the self . New York: Basic Books. Turnbull, A. A

Optical data transmission technology for fixed and drag-on STS payload umbilicals, volume 2

NASA Technical Reports Server (NTRS)

St.denis, R. W.

1981-01-01

Optical data handling methods are studied as applicable to payload communications checkout and monitoring. Both payload umbilicals and interconnecting communication lines carrying payload data are examined for the following: (1) ground checkout requirements; (2) optical approach (technical survey of optical approaches, selection of optimum approach); (3) survey and select components; (4) compare with conventional approach; and (5) definition of follow on activity.

Very long baseline interferometry using a communication satellite

NASA Technical Reports Server (NTRS)

Swenson, G. W., Jr.

1975-01-01

A planned experiment is discussed in long-baseline interferometry, using the Communications Technology Satellite to transmit the base-band signal from one telescope to another for real-time correlation. A 20 megabit data rate is planned, calling for a delay-line of 10 MHz bandwidth and controllable delay up to 275 milliseconds. A number of sources will be studied on baselines from Ontario to West Virginia and California.

Non-line-of-sight single-scatter propagation model for noncoplanar geometries.

PubMed

Elshimy, Mohamed A; Hranilovic, Steve

2011-03-01

In this paper, a geometrical propagation model is developed that generalizes the classical single-scatter model under the assumption of first-order scattering and non-line-of-sight (NLOS) communication. The generalized model considers the case of a noncoplanar geometry, where it overcomes the restriction that the transmitter and the receiver cone axes lie in the same plane. To verify the model, a Monte Carlo (MC) radiative transfer model based on a photon transport algorithm is constructed. Numerical examples for a wavelength of 266 nm are illustrated, which corresponds to a solar-blind NLOS UV communication system. A comparison of the temporal responses of the generalized model and the MC simulation results shows close agreement. Path loss and delay spread are also shown for different pointing directions.

Development of Traveling Wave Tube (TWT) transmitter amplifier for communication satellites 60 GHz/10 W

NASA Astrophysics Data System (ADS)

Lippert, G.; Bluhm, K. H.; Malzahn, P.; Bulka, C.

1985-12-01

For communication between geostationary satellites a transmitter using a TWT amplifier with frequencies in the region of 60 GHz and output power of a few watts is proposed. The design objectives for the electron gun were realized using a computer program, which also takes into account the thermal velocities of the electrons, to dimension the electrodes. A focusing electrode and a mixed metal cathode with a low beam compression ratio are employed in the gun. All requirements for the beam focusing system are met using an extremely precise machined integrated PPM system and SmCo5 magnets. An easily manufacturable delay line structure was realized using a diffusion brazed interdigital line consisting of only a few parts. The one stage collector can operate with a strongly reduced potential.

Learning Rate Updating Methods Applied to Adaptive Fuzzy Equalizers for Broadband Power Line Communications

NASA Astrophysics Data System (ADS)

Ribeiro, Moisés V.

2004-12-01

This paper introduces adaptive fuzzy equalizers with variable step size for broadband power line (PL) communications. Based on delta-bar-delta and local Lipschitz estimation updating rules, feedforward, and decision feedback approaches, we propose singleton and nonsingleton fuzzy equalizers with variable step size to cope with the intersymbol interference (ISI) effects of PL channels and the hardness of the impulse noises generated by appliances and nonlinear loads connected to low-voltage power grids. The computed results show that the convergence rates of the proposed equalizers are higher than the ones attained by the traditional adaptive fuzzy equalizers introduced by J. M. Mendel and his students. Additionally, some interesting BER curves reveal that the proposed techniques are efficient for mitigating the above-mentioned impairments.

Solid oxide fuel cell power plant with an anode recycle loop turbocharger

DOEpatents

Saito, Kazuo; Skiba, Tommy; Patel, Kirtikumar H.

2015-07-14

An anode exhaust recycle turbocharger (100) has a turbocharger turbine (102) secured in fluid communication with a compressed oxidant stream within an oxidant inlet line (218) downstream from a compressed oxidant supply (104), and the anode exhaust recycle turbocharger (100) also includes a turbocharger compressor (106) mechanically linked to the turbocharger turbine (102) and secured in fluid communication with a flow of anode exhaust passing through an anode exhaust recycle loop (238) of the solid oxide fuel cell power plant (200). All or a portion of compressed oxidant within an oxidant inlet line (218) drives the turbocharger turbine (102) to thereby compress the anode exhaust stream in the recycle loop (238). A high-temperature, automotive-type turbocharger (100) replaces a recycle loop blower-compressor (52).

Solid oxide fuel cell power plant with an anode recycle loop turbocharger

DOEpatents

Saito, Kazuo; Skiba, Tommy; Patel, Kirtikumar H.

2016-09-27

An anode exhaust recycle turbocharger (100) has a turbocharger turbine (102) secured in fluid communication with a compressed oxidant stream within an oxidant inlet line (218) downstream from a compressed oxidant supply (104), and the anode exhaust recycle turbocharger (100) also includes a turbocharger compressor (106) mechanically linked to the turbocharger turbine (102) and secured in fluid communication with a flow of anode exhaust passing through an anode exhaust recycle loop (238) of the solid oxide fuel cell power plant (200). All or a portion of compressed oxidant within an oxidant inlet line (218) drives the turbocharger turbine (102) to thereby compress the anode exhaust stream in the recycle loop (238). A high-temperature, automotive-type turbocharger (100) replaces a recycle loop blower-compressor (52).

Application d'une technique de modelisation aerodynamique conceptuelle sur la simulation d'un pilote automatique a commande optimale pour un avion d'affaires

NASA Astrophysics Data System (ADS)

Pollender-Moreau, Olivier

Ce document présente, dans le cadre d'un contexte conceptuel, une méthode d'enchaînement servant à faire le lien entre les différentes étapes qui permettent de réaliser la simulation d'un aéronef à partir de ses données géométriques et de ses propriétés massiques. En utilisant le cas de l'avion d'affaires Hawker 800XP de la compagnie Hawker Beechcraft, on démontre, via des données, un processus de traitement par lots et une plate-forme de simulation, comment (1) modéliser la géométrie d'un aéronef en plusieurs surfaces, (2) calculer les forces aérodynamiques selon une technique connue sous le nom de Vortex Lattice Method, (3) construire un modèle de vol servant à la simulation des aéronefs pour leur enveloppe de vol en ajoutant des fonctions supplémentaires, (4) construire un modèle de turbosoufflante simplifié, (5) développer un algorithme d'équilibre (trim) du mouvement longitudinal, (6) développer des algorithmes de contrôle à commande moderne, (7) développer certaines fonctions d'un système de pilotage automatique, et (8) rassembler le tout sous une même plate-forme de simulation. Afin de supporter ce travail, une application publique Matlab, connue sous le nom de Tornado, est utilisée conjointement avec d'autres fonctions pour la conception du modèle de vol aérodynamique. D'ailleurs, il sera démontré que le modèle de vol, quoiqu'il soit quand même crédible, ne concorde pas tout à fait avec les données de référence. Par contre, puisque le modèle des moteurs fonctionne bien, que l'algorithme d'équilibrage du mouvement longitudinal fonctionne bien et que les pôles des systèmes dynamiques concordent avec la littérature, les tests dynamiques effectués au sein de la plate-forme de simulation permettent d'obtenir des résultats fonctionnels et crédibles. D'ailleurs, deux systèmes d'augmentation de la stabilité basés sur la méthode de contrôle moderne LQR et couvrant l'enveloppe de vol de l'aéronef via un système d'ordonnancement des gains sont implémentés respectivement selon les mouvements longitudinal et latéral. Ces fonctions fonctionnent bien et permettent de rencontrer les qualités de vol requises pour un avion d'affaires. Finalement, certaines fonctions concernant un système de pilotage automatique sont implémentées. Dans le cas du mouvement latéral, ces fonctions sont basées sur les méthodes de contrôle modernes et couvrent la totalité de l'enveloppe de vol; mais en ce qui concerne le mouvement longitudinal, elles sont basées sur des algorithmes d'équilibre difficile à gérer pour implémenter sur toute l'enveloppe de vol, c'est pourquoi les tests présentés sont limités à des scénarios bien précis. Dans les deux cas, les essais effectués donnent d'assez bons résultats.

Implementation of RS-485 Communication between PLC and PC of Distributed Control System Based on VB

NASA Astrophysics Data System (ADS)

Lian Zhang, Chuan; Da Huang, Zhi; Qing Zhou, Gui; Chong, Kil To

2015-05-01

This paper focuses on achieving RS-485 communication between programmable logical controller (PLC) and PC based on visual basic 6.0 (VB6.0) on an experimental automatic production line. Mitsubishi FX2N PLCs and a PC are chosen as slave stations and main station, respectively. Monitoring software is developed using VB6.0 for data input/output, flow control and online parameters setting. As a result, all functions are fulfilled with robust performance. It is concluded from results that one PC can monitor several PLCs using RS-485 communication.

Evaluation and Application of Overvoltage into Communication Equipment Due to Potential Rise at Earthing Terminal of Distribution Line Induced by Lightning Surge

NASA Astrophysics Data System (ADS)

Ito, Katsuji; Hirose, Yasuo

Overvoltage induced by surge currents due to thunderstorm lightnings causes harmful breakdown troubles of CATV communication equipment installed in and with power distribution systems. In this paper, the origin and natures of surge currents, their invading route into the system, and the system components such as earth impedances affecting over voltages are studied. Transient analyses are then performed using an equivalent circuit to evaluate over voltages. Application of the obtained results to the field fault data of communication equipment and possible protection method of them are discussed.

Applied cartographic communication: map symbolization for atlases.

USGS Publications Warehouse

Morrison, J.L.

1984-01-01

A detailed investigation of the symbolization used on general-purpose atlas reference maps. It indicates how theories of cartographic communication can be put into practice. Two major points emerge. First, that a logical scheme can be constructed from existing cartographic research and applied to an analysis of the choice of symbolization on a map. Second, the same structure appears to allow the cartographer to specify symbolization as a part of map design. An introductory review of cartographic communication is followed by an analysis of selected maps' usage of point, area and line symbols, boundaries, text and colour usage.-after Author

Uses of communication satellites in water utility operations

NASA Astrophysics Data System (ADS)

Tighe, W. S.

This paper proposes a system to serve the communications needs of the operating side of a water utility and estimates the requirements and capabilities of the equipment needed. The system requires the shared use of a satellite transponder with 100% backup. Messages consist of data packets containing data and control information, plus voice transmission. Satellite communication may have a price advantage in some instances over wire line or VHF radio and have greater survivability in case of a natural disaster. Water and other utilities represent a significant market for low cost mass produced satellite earth terminals.

Experimental research and comparison of LDPC and RS channel coding in ultraviolet communication systems.

PubMed

Wu, Menglong; Han, Dahai; Zhang, Xiang; Zhang, Feng; Zhang, Min; Yue, Guangxin

2014-03-10

We have implemented a modified Low-Density Parity-Check (LDPC) codec algorithm in ultraviolet (UV) communication system. Simulations are conducted with measured parameters to evaluate the LDPC-based UV system performance. Moreover, LDPC (960, 480) and RS (18, 10) are implemented and experimented via a non-line-of-sight (NLOS) UV test bed. The experimental results are in agreement with the simulation and suggest that based on the given power and 10(-3)bit error rate (BER), in comparison with an uncoded system, average communication distance increases 32% with RS code, while 78% with LDPC code.

Research on APD-based non-line-of-sight UV communication system

NASA Astrophysics Data System (ADS)

Wang, Rongyang; Wang, Ling; Li, Chao; Zhang, Wenjing; Yuan, Yonggang; Xu, Jintong; Zhang, Yan; Li, Xiangyang

2010-10-01

In this paper, specific issues in designing an avalanche photodiode (APD)-based non-line-of-sight (NLOS) ultraviolet (UV) communication system are investigated. A proper wavelength of the UV LEDs and a system configuration should be considered carefully to assure the feasibility of this system. Using the single scattering model, the received optical power at the sensitive area of the APD can be calculated. According to the calculation, it revealed that the scattered ultraviolet signal level was very low; therefore, a post signal processing circuit was necessary. The authors put forward the key components of the circuit based on the compromise between signal bandwidth and gain. The performance of this circuit was evaluated by means of software simulation, and continued work was involved to improve its signal noise ratio (SNR). The transmitter used in this system was 365 nm UV LED array. Strictly speaking, this was not the practical outdoor UV communication system. Since the scattering coefficient of 365 nm UV only drops a little compared with solar blind UV, the research-grade UV communication could be carried out in a darkroom without a great influence. By combining an APD with a compound parabolic concentrator (CPC) optical system, the effective collection area and field of view (FOV) of the detector could be adjusted. Several issues were also raised to improve the performance of UV communication system, including using more powerful UV LEDs and choosing suitable modulation schemes.

How shared reality is created in interpersonal communication.

PubMed

Echterhoff, Gerald; Schmalbach, Bjarne

2017-12-29

Communication is a key arena and means for shared-reality creation. Most studies explicitly devoted to shared reality have focused on the opening part of a conversation, that is, a speaker's initial message to an audience. The aspect of communication examined by this research is the evaluative adaptation (tuning) of the messages to the audience's attitude or judgment. The speaker's shared-reality creation is typically assessed by the extent to which the speaker's evaluative representation of the topic matches the audience-tuned view expressed in the message. We first review research on such audience-tuning effects, with a focus on shared-reality goals and conditions facilitating the generalization of shared reality. We then review studies using other paradigms that illustrate factors of shared-reality creation in communication, including mere message production, grounding, validation responses, and communication about commonly known information (including stereotypes) in intragroup communication. The different lines of research reveal the potency, but also boundary conditions, of communication effects on shared reality. Copyright © 2017. Published by Elsevier Ltd.

BRIEF COMMUNICATIONS: Generation of tunable infrared radiation by stimulated Raman scattering on hydrogen in a prism-lens optical delay line

NASA Astrophysics Data System (ADS)

Andreev, R. B.; Butylkin, V. S.; Evtyushkin, V. A.; Fisher, P. S.; Khabarov, V. V.

1983-03-01

The threshold of stimulated Raman scattering was lowered by filling an optical delay line with hydrogen. Pumping was by a tunable neodymium laser. Lens-prism combinations were used as phase correctors in the delay line. The dependences of the energy of the Stokes component on the pump energy determined experimentally for different numbers of transits through the delay line were compared with the results of a calculation allowing for the losses in the components of this line. When the frequency conversion was by a factor of at least 2 and the tuning range was wide (tens of percent), the optimal performance was obtained from the optical delay line when total-internal-reflection prisms and lenses were combined in a single component and oriented at the Brewster angle.

Attenuation analysis of long-haul NLOS atmospheric optical scattering communication

NASA Astrophysics Data System (ADS)

Zhang, Shihua; Wang, Jingyuan; Xu, Zhiyong; Song, Chao; Wang, Rong; Chen, Yiwang; Zhao, Jiyong; Wei, Yimei

2016-06-01

The attenuation characteristics of ultraviolet (UV) and infrared transmitting in the atmosphere is analyzed, when long-haul Non-Line-of-Sight (NLOS) optical scattering communication is considered. The effects of Rayleigh and Mie scattering to link performance are presented. Under given geometric configurations, a critical range RC is found. When communication range is shorter than RC, the attenuation of UV is lower than that of infrared. But the path loss of UV increases rapidly, while the path loss of infrared increases much slower. When communication range is longer than RC, the attenuation of UV is higher than that of infrared. Numerical values of RC under different geometries are analyzed. It is also indicated that, under arbitrary geometric configurations, the impact of the Rayleigh scattering to infrared scattering communication is weak, but to UV scattering, the Rayleigh scattering effect cannot be ignored.

Words are not enough: how preschoolers' integration of perspective and emotion informs their referential understanding.

PubMed

Graham, Susan A; San Juan, Valerie; Khu, Melanie

2017-05-01

When linguistic information alone does not clarify a speaker's intended meaning, skilled communicators can draw on a variety of cues to infer communicative intent. In this paper, we review research examining the developmental emergence of preschoolers' sensitivity to a communicative partner's perspective. We focus particularly on preschoolers' tendency to use cues both within the communicative context (i.e. a speaker's visual access to information) and within the speech signal itself (i.e. emotional prosody) to make on-line inferences about communicative intent. Our review demonstrates that preschoolers' ability to use visual and emotional cues of perspective to guide language interpretation is not uniform across tasks, is sometimes related to theory of mind and executive function skills, and, at certain points of development, is only revealed by implicit measures of language processing.

Collaborative Aerial-Drawing System for Supporting Co-Creative Communication

NASA Astrophysics Data System (ADS)

Osaki, Akihiro; Taniguchi, Hiroyuki; Miwa, Yoshiyuki

This paper describes the collaborative augmented reality (AR) system with which multiple users can handwrite 3D lines in the air simultaneously and manipulate the lines directly in the real world. In addition, we propose a new technique for co-creative communication utilizing the 3D drawing activity. Up to now, the various 3D user interfaces have been proposed. Although most of them aim to solve the specific problems in the virtual environments, the possibility of the 3D drawing expression has not been explored yet. Accordingly, we paid special attention to the interaction with the real objects in daily life, and considered to manipulate real objects and 3D lines without any distinctions by the same action. The developed AR system consists of a stereoscopic head-mounted display, a drawing tool, 6DOF sensors measuring three-dimensional position and Euler angles, and the 3D user interface, which enables to push, grasp and pitch 3D lines directly by use of the drawing tool. Additionally users can pick up desired color from either a landscape or a virtual line through the direct interaction with this tool. For sharing 3D lines among multiple users at the same place, the distributed-type AR system has been developed that mutually sends and receives drawn data between systems. With the developed system, users can proceed to design jointly in the real space through arranging each 3D drawing by direct manipulation. Moreover, a new application to the entertainment has become possible to play sports like catch, fencing match, or the like.

43 CFR 422.8 - Requirements for law enforcement functions and programs.

Code of Federal Regulations, 2010 CFR

2010-10-01

... enforcement authority. (a) The law enforcement program must provide for control, accountability, coordination, and clear lines of authority and communication. This organizational structure must apply both within...

Experimental Semiotics: A New Approach For Studying Communication As A Form Of Joint Action

PubMed Central

Galantucci, Bruno

2015-01-01

In the last few years, researchers have begun to investigate the emergence of novel forms of human communication in the laboratory. I survey this growing line of research, which may be called experimental semiotics, from three distinct angles. First, I situate the new approach in its theoretical and historical context. Second, I review a sample of studies that exemplify experimental semiotics. Third, I present an empirical study that illustrates how the new approach can help us understand the sociocognitive underpinnings of human communication. The main conclusion of the paper will be that, by reproducing micro samples of historical processes in the laboratory, experimental semiotics offers new powerful tools for investigating human communication as a form of joint action. PMID:25164941

Effective communication during difficult conversations.

PubMed

Polito, Jacquelyn M

2013-06-01

A strong interest and need exist in the workplace today to master the skills of conducting difficult conversations. Theories and strategies abound, yet none seem to have found the magic formula with universal appeal and success. If it is such an uncomfortable skill to master is it better to avoid or initiate such conversations with employees? Best practices and evidence-based management guide us to the decision that quality improvement dictates effective communication, even when difficult. This brief paper will offer some suggestions for strategies to manage difficult conversations with employees. Mastering the skills of conducting difficult conversations is clearly important to keeping lines of communication open and productive. Successful communication skills may actually help to avert confrontation through employee engagement, commitment and appropriate corresponding behavior

Expressive electronic journal writing: freedom of communication for survivors of acquired brain injury.

PubMed

Fraas, Michael; Balz, Magdalen A

2008-03-01

In addition to the impaired ability to effectively communicate, adults with acquired brain injury (ABI) also experience high incidences of depression, social isolation, and decreased quality of life. Expressive writing programs have been shown to be effective in alleviating these concomitant impairments in other populations including incarcerated inmates (Lane, Writing as a road to self-discovery, F & W, Cincinnati 1993). In addition, computer applications such as email have been suggested as an effective means of improving communication and social isolation in adults with brain injury (Sohlberg et al. [2003]. Brain Injury, 17(7), 609-629). This investigation examines the effects of on-line expressive journal writing on the communication, emotional status, social integration and quality of life of individuals with brain injury.

Non-line-of-sight ultraviolet link loss in noncoplanar geometry.

PubMed

Wang, Leijie; Xu, Zhengyuan; Sadler, Brian M

2010-04-15

Various path loss models have been developed for solar blind non-line-of-sight UV communication links under an assumption of coplanar source beam axis and receiver pointing direction. This work further extends an existing single-scattering coplanar analytical model to noncoplanar geometry. The model is derived as a function of geometric parameters and atmospheric characteristics. Its behavior is numerically studied in different noncoplanar geometric settings.

VHSIC Electronics and the Cost of Air Force Avionics in the 1990s

DTIC Science & Technology

1990-11-01

circuit. LRM Line replaceable module. LRU Line replaceable unit. LSI Large-scale integration. LSTTL Tow-power Schottky Transitor -to-Transistor Logic...displays, communications/navigation/identification, electronic combat equipment, dispensers, and computers. These CERs, which statistically relate the...some of the reliability numbers, and adding the F-15 and F-16 to obtain the data sample shown in Table 6. Both suite costs and reliability statistics

Tether Deployer And Brake

NASA Technical Reports Server (NTRS)

Carroll, Joseph A.; Alexander, Charles M.

1993-01-01

Design concept promises speed, control, and reliability. Scheme for deploying tether provides for fast, free, and snagless payout and fast, dependable braking. Developed for small, expendable tethers in outer space, scheme also useful in laying transoceanic cables, deploying guidance wires to torpedoes and missiles, paying out rescue lines from ship to ship via rockets, deploying antenna wires, releasing communication and power cables to sonobuoys and expendable bathythermographs, and in reeling out lines from fishing rods.

M/A-COM Linkabit Eastern Operations

DTIC Science & Technology

1983-03-31

Lincoln Laboratories speech codec for use in multimedia system development. Communication equipment included 1200-bps dial-up modems and a set of...connected to the DCN for use in[7, Page 4 general word-processing and network-testing applications.Additional modems and video terminals have also been...line 0) can be connected to a second terminal, a printer, or a modem . The standard configuration assumes this line is connected to a terminal or

78 FR 79362 - Request for Comment on Petition Filed by AT&T Services, Inc., Regarding the Provision of Muting...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-12-30

...In this document, the Federal Communications Commission (Commission) corrects a document published at 78 FR 76096, December 16, 2013. This document seeks comment on an AT&T Services, Inc., petition requesting clarification. The ACTION line incorrectly reflected the caption of the document; therefore, this document corrects the ACTION line to read ``Petition for clarification; request for comments''.

Suez Canal Clearance Operation, Task Force 65

DTIC Science & Technology

1975-05-01

supporting minesweepers, GARDENIA, GIROFLEE, AJONC, and LILAS, and two minehunters CERES and CALLIOPE. TG SIX FIVE POINT ZERO . This Task Group designation...circle search line, buoy line, tether, zero visibility, and no communication with the surface, created a hazardous situation for open circuit scuba...from essentially zero to several hut7Ared thousand in Port Said and Suez City, and to a lesser degree in Ismailia. This occurred without a concomitant

Development and Testing of a Two-UAV Communication Relay System.

PubMed

Li, Boyang; Jiang, Yifan; Sun, Jingxuan; Cai, Lingfeng; Wen, Chih-Yung

2016-10-13

In the development of beyond-line-of-sight (BLOS) Unmanned Aerial Vehicle (UAV) systems, communication between the UAVs and the ground control station (GCS) is of critical importance. The commonly used economical wireless modules are restricted by the short communication range and are easily blocked by obstacles. The use of a communication relay system provides a practical way to solve these problems, improving the performance of UAV communication in BLOS and cross-obstacle operations. In this study, a communication relay system, in which a quadrotor was used to relay radio communication for another quadrotor was developed and tested. First, the UAVs used as the airborne platform were constructed, and the hardware for the communication relay system was selected and built up. Second, a set of software programs and protocol for autonomous mission control, communication relay control, and ground control were developed. Finally, the system was fully integrated into the airborne platform and tested both indoor and in-flight. The Received Signal Strength Indication (RSSI) and noise value in two typical application scenarios were recorded. The test results demonstrated the ability of this system to extend the communication range and build communication over obstacles. This system also shows the feasibility to coordinate multiple UAVs' communication with the same relay structure.

Development and Testing of a Two-UAV Communication Relay System

PubMed Central

Li, Boyang; Jiang, Yifan; Sun, Jingxuan; Cai, Lingfeng; Wen, Chih-Yung

2016-01-01

In the development of beyond-line-of-sight (BLOS) Unmanned Aerial Vehicle (UAV) systems, communication between the UAVs and the ground control station (GCS) is of critical importance. The commonly used economical wireless modules are restricted by the short communication range and are easily blocked by obstacles. The use of a communication relay system provides a practical way to solve these problems, improving the performance of UAV communication in BLOS and cross-obstacle operations. In this study, a communication relay system, in which a quadrotor was used to relay radio communication for another quadrotor was developed and tested. First, the UAVs used as the airborne platform were constructed, and the hardware for the communication relay system was selected and built up. Second, a set of software programs and protocol for autonomous mission control, communication relay control, and ground control were developed. Finally, the system was fully integrated into the airborne platform and tested both indoor and in-flight. The Received Signal Strength Indication (RSSI) and noise value in two typical application scenarios were recorded. The test results demonstrated the ability of this system to extend the communication range and build communication over obstacles. This system also shows the feasibility to coordinate multiple UAVs’ communication with the same relay structure. PMID:27754369

Experimental evaluation of LED-based solar blind NLOS communication links.

PubMed

Chen, Gang; Abou-Galala, Feras; Xu, Zhengyuan; Sadler, Brian M

2008-09-15

Experimental results are reported demonstrating non-line of sight short-range ultraviolet communication link losses, and performance of photon counting detectors, operating in the solar blind spectrum regime. We employ light emitting diodes with divergent beams, a solar blind filter, and a wide field-of-view detector. Signal and noise statistics are characterized, and receiver performance is demonstrated. The effects of transmitter and receiver elevation angles, separation distance, and path loss are included.

Communication and language challenges experienced by Chinese and South Asian immigrant parents of children with cancer in Canada: implications for health services delivery.

PubMed

Gulati, Sonia; Watt, Lisa; Shaw, Nicola; Sung, Lillian; Poureslami, Iraj M; Klaassen, Robert; Dix, David; Klassen, Anne F

2012-04-01

Language is an important aspect of health literacy and plays a vital role in families' ability to access and use health information and resources. Our study explored the role of communication and language in the healthcare experiences of immigrant parents of children with cancer living in Canada. We used a grounded theory approach. Chinese and South Asian parents of children 6 months post-diagnosis were recruited from six Canadian pediatric oncology centers. Semi-structured interviews were conducted in Cantonese, Mandarin, Hindi, Punjabi, Urdu, or English. Questions relevant to communication included: how parents navigated the healthcare system; nature of interpreter services and translated materials; and suggestions about how to improve services. Analysis involved line-by-line, focused and theoretical coding, and constant comparison. Thirty-one (62%) parents reported no difficulty communicating with healthcare providers in English, while 13 (26%) parents struggled with English, and six (12%) parents could not communicate in English. Communication challenges influenced parents' role in caring for their child and made it difficult to learn complex medical terminology. Interpreting services were sometimes inadequate or not accessible. Parents occasionally missed out on services and resources, reported limited availability of linguistically and culturally appropriate information, and experienced a lack of social integration in the healthcare process. Language ability played an essential role in parents' healthcare experiences for pragmatic and social purposes. Language challenges can heighten systemic and socio-cultural barriers to accessing health information and resources. The provision of enhanced culturally and linguistically sensitive services may support immigrant families in their caregiving role. Copyright © 2011 Wiley Periodicals, Inc.

False alarms, real challenges--one university's communication response to the 2001 anthrax crisis.

PubMed

Clarke, Christopher E; Chess, Caron

2006-01-01

Considerable research exists on how government agencies at the federal, state, and local levels communicated during the fall 2001 anthrax attacks. However, there is little research on how other institutions handled this crisis, in terms of their response to potential anthrax contamination (aka "white powder scares") and their approach to disseminating important health and safety information. In this article, we investigate a major university's communication response to the anthrax crisis. First, we describe its communication experiences relating to a large white powder scare that occurred in October 2001. Second, we describe the university's broader communication efforts in terms of several important elements of risk communication research, including influence of source attributes, key messages, preferred channels, responses to information requests, and organizational influences. This study underlines that an institution does not have to be directly affected by a crisis to find itself on the communication "front lines." Moreover, other institutions may find it useful to learn from the experiences of this university, so that they may communicate more effectively during future crises.

18 CFR 367.3970 - Account 397, Communication equipment.

Code of Federal Regulations, 2012 CFR

2012-04-01

... items: (1) Amplifiers. (2) Antennae. (3) Booths. (4) Cables. (5) Carrier terminal equipment. (6...) Remote control equipment and lines. (23) Sending keys. (24) Storage batteries. (25) Switchboards. (26... and cable wires. ...

18 CFR 367.3970 - Account 397, Communication equipment.

Code of Federal Regulations, 2013 CFR

2013-04-01

... items: (1) Amplifiers. (2) Antennae. (3) Booths. (4) Cables. (5) Carrier terminal equipment. (6...) Remote control equipment and lines. (23) Sending keys. (24) Storage batteries. (25) Switchboards. (26... and cable wires. ...

18 CFR 367.3970 - Account 397, Communication equipment.

Code of Federal Regulations, 2010 CFR

2010-04-01

... items: (1) Amplifiers. (2) Antennae. (3) Booths. (4) Cables. (5) Carrier terminal equipment. (6...) Remote control equipment and lines. (23) Sending keys. (24) Storage batteries. (25) Switchboards. (26... and cable wires. ...

18 CFR 367.3970 - Account 397, Communication equipment.

Code of Federal Regulations, 2014 CFR

2014-04-01

... items: (1) Amplifiers. (2) Antennae. (3) Booths. (4) Cables. (5) Carrier terminal equipment. (6...) Remote control equipment and lines. (23) Sending keys. (24) Storage batteries. (25) Switchboards. (26... and cable wires. ...

18 CFR 367.3970 - Account 397, Communication equipment.

Code of Federal Regulations, 2011 CFR

2011-04-01

... items: (1) Amplifiers. (2) Antennae. (3) Booths. (4) Cables. (5) Carrier terminal equipment. (6...) Remote control equipment and lines. (23) Sending keys. (24) Storage batteries. (25) Switchboards. (26... and cable wires. ...

Cell Phones: Current Research Results

MedlinePlus

... possibly carcinogenic to humans": Coffee Extremely low frequency electromagnetic fields (power line frequency) Talc-based body powder ... Effects of Wireless Communication Devices World Health Organization: Electromagnetic Fields and Public Health: Mobile Phones International Agency ...

Eco-logical successes : fourth edition, March 2013

DOT National Transportation Integrated Search

2013-03-01

Infrastructure facilities, such as roadways, transit lines, and communication systems, provide vital services that support the healthy functioning of a community. While essential, sometimes the development of these facilities has negative environment...

Analysis of Microstrip Line Fed Patch Antenna for Wireless Communications

NASA Astrophysics Data System (ADS)

Singh, Ashish; Aneesh, Mohammad; Kamakshi; Ansari, J. A.

2017-11-01

In this paper, theoretical analysis of microstrip line fed rectangular patch antenna loaded with parasitic element and split-ring resonator is presented. The proposed antenna shows that the dualband operation depends on gap between parasitic element, split-ring resonator, length and width of microstrip line. It is found that antenna resonates at two distinct resonating modes i.e., 0.9 GHz and 1.8 GHz for lower and upper resonance frequencies respectively. The antenna shows dual frequency nature with frequency ratio 2.0. The characteristics of microstrip line fed rectangular patch antenna loaded with parasitic element and split-ring resonator antenna is compared with other prototype microstrip line fed antennas. Further, the theoretical results are compared with simulated and reported experimental results, they are in close agreement.

Development, Demonstration, and Control of a Testbed for Multiterminal HVDC System

DOE PAGES

Li, Yalong; Shi, Xiaojie M.; Liu, Bo; ...

2016-10-21

This paper presents the development of a scaled four-terminal high-voltage direct current (HVDC) testbed, including hardware structure, communication architecture, and different control schemes. The developed testbed is capable of emulating typical operation scenarios including system start-up, power variation, line contingency, and converter station failure. Some unique scenarios are also developed and demonstrated, such as online control mode transition and station re-commission. In particular, a dc line current control is proposed, through the regulation of a converter station at one terminal. By controlling a dc line current to zero, the transmission line can be opened by using relatively low-cost HVDC disconnectsmore » with low current interrupting capability, instead of the more expensive dc circuit breaker. Utilizing the dc line current control, an automatic line current limiting scheme is developed. As a result, when a dc line is overloaded, the line current control will be automatically activated to regulate current within the allowable maximum value.« less

29 CFR 1910.268 - Telecommunications.

Code of Federal Regulations, 2010 CFR

2010-07-01

... ground line as possible using a pole prod or a screwdriver with a blade at least 5 inches long. If... conducter on the pole (exclusive of vertical runs and street light wiring), except: (i) Where communications...

29 CFR 1910.268 - Telecommunications.

Code of Federal Regulations, 2011 CFR

2011-07-01

... ground line as possible using a pole prod or a screwdriver with a blade at least 5 inches long. If... conducter on the pole (exclusive of vertical runs and street light wiring), except: (i) Where communications...

29 CFR 1910.268 - Telecommunications.

Code of Federal Regulations, 2012 CFR

2012-07-01

... ground line as possible using a pole prod or a screwdriver with a blade at least 5 inches long. If... conducter on the pole (exclusive of vertical runs and street light wiring), except: (i) Where communications...

29 CFR 1910.268 - Telecommunications.

Code of Federal Regulations, 2013 CFR

2013-07-01

... ground line as possible using a pole prod or a screwdriver with a blade at least 5 inches long. If... conducter on the pole (exclusive of vertical runs and street light wiring), except: (i) Where communications...

29 CFR 1910.268 - Telecommunications.

Code of Federal Regulations, 2014 CFR

2014-07-01

... ground line as possible using a pole prod or a screwdriver with a blade at least 5 inches long. If... conducter on the pole (exclusive of vertical runs and street light wiring), except: (i) Where communications...

47 CFR 69.413 - Universal service fund expenses.

Code of Federal Regulations, 2010 CFR

2010-10-01

... 69.413 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) COMMON CARRIER SERVICES... Common Line Element until March 31, 1989. Beginning April 1, 1989, such expenses shall be assigned to the Universal Service Fund Element. ...

Staged membrane oxidation reactor system

DOEpatents

Repasky, John Michael; Carolan, Michael Francis; Stein, VanEric Edward; Chen, Christopher Ming-Poh

2014-05-20

Ion transport membrane oxidation system comprising (a) two or more membrane oxidation stages, each stage comprising a reactant zone, an oxidant zone, one or more ion transport membranes separating the reactant zone from the oxidant zone, a reactant gas inlet region, a reactant gas outlet region, an oxidant gas inlet region, and an oxidant gas outlet region; (b) an interstage reactant gas flow path disposed between each pair of membrane oxidation stages and adapted to place the reactant gas outlet region of a first stage of the pair in flow communication with the reactant gas inlet region of a second stage of the pair; and (c) one or more reactant interstage feed gas lines, each line being in flow communication with any interstage reactant gas flow path or with the reactant zone of any membrane oxidation stage receiving interstage reactant gas.

A fast-initializing digital equalizer with on-line tracking for data communications

NASA Technical Reports Server (NTRS)

Houts, R. C.; Barksdale, W. J.

1974-01-01

A theory is developed for a digital equalizer for use in reducing intersymbol interference (ISI) on high speed data communications channels. The equalizer is initialized with a single isolated transmitter pulse, provided the signal-to-noise ratio (SNR) is not unusually low, then switches to a decision directed, on-line mode of operation that allows tracking of channel variations. Conditions for optimal tap-gain settings are obtained first for a transversal equalizer structure by using a mean squared error (MSE) criterion, a first order gradient algorithm to determine the adjustable equalizer tap-gains, and a sequence of isolated initializing pulses. Since the rate of tap-gain convergence depends on the eigenvalues of a channel output correlation matrix, convergence can be improved by making a linear transformation on to obtain a new correlation matrix.

A Millimeter-Wave Cavity-Backed Suspended Substrate Stripline Antenna

NASA Technical Reports Server (NTRS)

Simons, Rainee N.

1999-01-01

Future generation satellite communication systems in near-Earth orbit will operate at frequencies in the higher mm-wave frequency bands. These satellite systems require low-profile, high gain, light weight and low cost antennas for communications to and from Earth as well as for inter-satellite links (ISL). At higher mm-wave frequencies, the conductor loss of conventional microstrip line is high and consequently the feed network loss of patch antenna arrays is also high. The high loss lowers the array efficiency, and in addition lowers the G/T ratio in a receiving array. Recently a radial line slot antenna array has been demonstrated to have high gain and efficiency at 60 GHz. In this paper, the design, fabrication and characterization of a V-Band (50-75 GHz), cavity backed, circular aperture antenna with suspended substrate stripline (SSS) feed is presented.

Staged membrane oxidation reactor system

DOEpatents

Repasky, John Michael; Carolan, Michael Francis; Stein, VanEric Edward; Chen, Christopher Ming-Poh

2013-04-16

Ion transport membrane oxidation system comprising (a) two or more membrane oxidation stages, each stage comprising a reactant zone, an oxidant zone, one or more ion transport membranes separating the reactant zone from the oxidant zone, a reactant gas inlet region, a reactant gas outlet region, an oxidant gas inlet region, and an oxidant gas outlet region; (b) an interstage reactant gas flow path disposed between each pair of membrane oxidation stages and adapted to place the reactant gas outlet region of a first stage of the pair in flow communication with the reactant gas inlet region of a second stage of the pair; and (c) one or more reactant interstage feed gas lines, each line being in flow communication with any interstage reactant gas flow path or with the reactant zone of any membrane oxidation stage receiving interstage reactant gas.

Received response based heuristic LDPC code for short-range non-line-of-sight ultraviolet communication.

PubMed

Qin, Heng; Zuo, Yong; Zhang, Dong; Li, Yinghui; Wu, Jian

2017-03-06

Through slight modification on typical photon multiplier tube (PMT) receiver output statistics, a generalized received response model considering both scattered propagation and random detection is presented to investigate the impact of inter-symbol interference (ISI) on link data rate of short-range non-line-of-sight (NLOS) ultraviolet communication. Good agreement with the experimental results by numerical simulation is shown. Based on the received response characteristics, a heuristic check matrix construction algorithm of low-density-parity-check (LDPC) code is further proposed to approach the data rate bound derived in a delayed sampling (DS) binary pulse position modulation (PPM) system. Compared to conventional LDPC coding methods, better bit error ratio (BER) below 1E-05 is achieved for short-range NLOS UVC systems operating at data rate of 2Mbps.

Research on the full life cycle management system of smart electric energy meter

NASA Astrophysics Data System (ADS)

Chen, Xiangqun; Huang, Rui; Shen, Liman; Guo, Dingying; Xiong, Dezhi; Xiao, Xiangqi; Liu, Mouhai; Renheng, Xu

2018-02-01

At present, China’s smart electric energy meter life management is started from the procurement and acceptance. The related monitoring and management of the manufacturing sector has not yet been carried out. This article applies RFID technology and network cloud platform to full life cycle management system of smart electric energy meters, builds this full life cycle management system including design and manufacturing, process control, measurement and calibration testing, storage management, user acceptance, site operation, maintenance scrap and other aspects. Exploring smart electric energy meters on-line and off-line communication by the application of active RFID communication functions, and the actual functional application such as local data exchange and instrument calibration. This system provides technical supports on power demand side management and the improvement of smart electric energy meter reliability evaluation system.

Staged membrane oxidation reactor system

DOEpatents

Repasky, John Michael; Carolan, Michael Francis; Stein, VanEric Edward; Chen, Christopher Ming-Poh

2012-09-11

Ion transport membrane oxidation system comprising (a) two or more membrane oxidation stages, each stage comprising a reactant zone, an oxidant zone, one or more ion transport membranes separating the reactant zone from the oxidant zone, a reactant gas inlet region, a reactant gas outlet region, an oxidant gas inlet region, and an oxidant gas outlet region; (b) an interstage reactant gas flow path disposed between each pair of membrane oxidation stages and adapted to place the reactant gas outlet region of a first stage of the pair in flow communication with the reactant gas inlet region of a second stage of the pair; and (c) one or more reactant interstage feed gas lines, each line being in flow communication with any interstage reactant gas flow path or with the reactant zone of any membrane oxidation stage receiving interstage reactant gas.

Design of a CAN bus interface for photoelectric encoder in the spaceflight camera

NASA Astrophysics Data System (ADS)

Sun, Ying; Wan, Qiu-hua; She, Rong-hong; Zhao, Chang-hai; Jiang, Yong

2009-05-01

In order to make photoelectric encoder usable in a spaceflight camera which adopts CAN bus as the communication method, CAN bus interface of the photoelectric encoder is designed in this paper. CAN bus interface hardware circuit of photoelectric encoder consists of CAN bus controller SJA 1000, CAN bus transceiver TJA1050 and singlechip. CAN bus interface controlling software program is completed in C language. A ten-meter shield twisted pair line is used as the transmission medium in the spaceflight camera, and speed rate is 600kbps.The experiments show that: the photoelectric encoder with CAN bus interface which has the advantages of more reliability, real-time, transfer rate and transfer distance overcomes communication line's shortcomings of classical photoelectric encoder system. The system works well in automatic measuring and controlling system.

Finding and accessing diagrams in biomedical publications.

PubMed

Kuhn, Tobias; Luong, ThaiBinh; Krauthammer, Michael

2012-01-01

Complex relationships in biomedical publications are often communicated by diagrams such as bar and line charts, which are a very effective way of summarizing and communicating multi-faceted data sets. Given the ever-increasing amount of published data, we argue that the precise retrieval of such diagrams is of great value for answering specific and otherwise hard-to-meet information needs. To this end, we demonstrate the use of advanced image processing and classification for identifying bar and line charts by the shape and relative location of the different image elements that make up the charts. With recall and precisions of close to 90% for the detection of relevant figures, we discuss the use of this technology in an existing biomedical image search engine, and outline how it enables new forms of literature queries over biomedical relationships that are represented in these charts.

Reliability assessment of fiber optic communication lines depending on external factors and diagnostic errors

NASA Astrophysics Data System (ADS)

Bogachkov, I. V.; Lutchenko, S. S.

2018-05-01

The article deals with the method for the assessment of the fiber optic communication lines (FOCL) reliability taking into account the effect of the optical fiber tension, the temperature influence and the built-in diagnostic equipment errors of the first kind. The reliability is assessed in terms of the availability factor using the theory of Markov chains and probabilistic mathematical modeling. To obtain a mathematical model, the following steps are performed: the FOCL state is defined and validated; the state graph and system transitions are described; the system transition of states that occur at a certain point is specified; the real and the observed time of system presence in the considered states are identified. According to the permissible value of the availability factor, it is possible to determine the limiting frequency of FOCL maintenance.

The fiber optic connection

DOE Office of Scientific and Technical Information (OSTI.GOV)

Benjamin, S.

1994-09-01

Technology, competition, and economics are pushing electric utilities to reconfigure and expand their communication systems. And that`s building the national information infrastructure. In fact, some already lease out spare communications capacity. Some have established all-telecommunications business subsidiaries, and some are planning to. It`s one aspect of a multifaceted situation. While the nation wonders what superhighway might be and who might build it, other players are already vying for pieces of the action. Since the introduction of telephone competition a decade ago, young challengers like Sprint and MCI have given venerable AT & T a run for its subscribers money, overmore » high-tech long-distance lines. They itch to enter the local telephone business in competition with the regional Bell operating companies spawned from AT & T, now that they can no longer be accused of monopolizing the phone lines.« less

CargoTIPS: an innovative approach to combating cargo theft

NASA Astrophysics Data System (ADS)

Toth, Gail E.

1998-12-01

Cargo theft has been estimated by the Federal Bureau o Investigations to be 6 billion annually, while others believe it to be more than 10 billion annually. Opportunistic thieves, street gangs, traditional organized crime groups, and new organized crime groups have been targeting cargo. They steal from warehouses, terminals, equipment, truck stops, or any place where freight comes to a rest. With zero inventory levels, our trailers have become virtual warehouses on wheels and easy targets for thieves. Without information and communication cargo thieves can thrive. The industry and law enforcement are forced into being reactive instead of developing proactive policies and procedures. Cargo thieves cross town lines, county lines, state lines and country borders. This makes communication within the law enforcement community imperative. CargoTIPS (cargo theft information processing system) was developed in response to the need for cargo theft information. The system allows us to collect cargo theft statistics to analyze the problem, assess the threat and develop a response on a national level. CargoTIPS includes a bulletin board, which allows users to communicate with each other, pass on alerts or seek information. The system is also used as an investigative tool. CargoTIPS can identify the mode of transportation (truck, small parcel, air, rail or ocean). It was designed to take in international data. Currently the system has identified that food products are the number one targeted commodity, followed by electronic products and third, computers and computer parts.

Leadership = Communication? The Relations of Leaders' Communication Styles with Leadership Styles, Knowledge Sharing and Leadership Outcomes.

PubMed

de Vries, Reinout E; Bakker-Pieper, Angelique; Oostenveld, Wyneke

2010-09-01

PURPOSE: The purpose of this study was to investigate the relations between leaders' communication styles and charismatic leadership, human-oriented leadership (leader's consideration), task-oriented leadership (leader's initiating structure), and leadership outcomes. METHODOLOGY: A survey was conducted among 279 employees of a governmental organization. The following six main communication styles were operationalized: verbal aggressiveness, expressiveness, preciseness, assuredness, supportiveness, and argumentativeness. Regression analyses were employed to test three main hypotheses. FINDINGS: In line with expectations, the study showed that charismatic and human-oriented leadership are mainly communicative, while task-oriented leadership is significantly less communicative. The communication styles were strongly and differentially related to knowledge sharing behaviors, perceived leader performance, satisfaction with the leader, and subordinate's team commitment. Multiple regression analyses showed that the leadership styles mediated the relations between the communication styles and leadership outcomes. However, leader's preciseness explained variance in perceived leader performance and satisfaction with the leader above and beyond the leadership style variables. IMPLICATIONS: This study offers potentially invaluable input for leadership training programs by showing the importance of leader's supportiveness, assuredness, and preciseness when communicating with subordinates. ORIGINALITY/VALUE: Although one of the core elements of leadership is interpersonal communication, this study is one of the first to use a comprehensive communication styles instrument in the study of leadership.

Power losses in diffuse ultraviolet optical communications channels.

PubMed

Raptis, Nikos; Pikasis, Evangelos; Syvridis, Dimitris

2016-09-15

One of the most critical parameters in free-space optical communications systems operating in a non-line-of-sight regime are the optical losses. In this Letter, we numerically calculate these losses taking into account the scattering effects using the Monte Carlo simulation technique. The obtained results are compared with experimentally obtained data at 265 nm (solar-blind UV regime). A large set of measurements at distances up to 20 m, for different elevation angles of the transmitter (UV-LEDs) and receiver (photomultiplier tube) and for different atmospheric conditions has been taken for the characterization of the optical communications channel in terms of its loss properties.

Scientific publishing in non industrialized countries: a pilot wireless internet project for Africa.

PubMed

Azzi, Angelo

2005-01-01

There is general agreement that the internet is the major means of future scientific communication and education. However not everybody appreciates that the development of electronic communication in industrialized societies is not matched, even to a small extent, in developing countries. Several new technologies offer the potential for developing countries to provide connectivity. Terrestrial wireless and satellite technologies offer many advantages in that they do not require installation of wire-line networks. Satellite facilities can also be installed where communication is needed, even in remote and isolated areas, rather than waiting for terrestrial networks to be extended from the cities.

Microgravity

NASA Image and Video Library

1998-02-05

This graph depicts the increased signal quality possible with optical fibers made from ZBLAN, a family of heavy-metal fluoride glasses (fluorine combined zirconium, barium, lanthanum, aluminum, and sodium) as compared to silica fibers. NASA is conducting research on pulling ZBLAN fibers in the low-g environment of space to prevent crystallization that limits ZBLAN's usefulness in optical fiber-based communications. In the graph, a line closer to the black theoretical maximum line is better. Photo credit: NASA/Marshall Space Flight Center

Worldwide Report, Telecommunications Policy, Research and Development, No. 281.

DTIC Science & Technology

1983-08-02

communications line. This line will automatically link Cotonou with Ouagadougou without having to pass through Paris. The agreement was signed this morning in... finished parts e.g. auto and motocycle assembly plants ^wKch most of the^time are wrongly referred to as "industries". . Unlike Brazil, Nigeria...tends to think that the machine tools factory will end up as these assembly plants of imported finished parts unless the government sets up other

Methodology For The System Integration Of Adaptive Resilience In Armor

DTIC Science & Technology

2016-09-01

military FM radio . Military FM radios operate in a set mode of frequencies . In today’s modern era, many other pathways of digital and analogue... communication exist, whether cellular network, satellite, or even the aging telephone lines. The common FM radio uses line-of-sight electromagnetic...Jackson 2009). Apollo 13 was to be the third intentional U.S.-manned lunar landing. The craft was launched on April 11 , 1970, from the Kennedy Space

Downhole drilling network using burst modulation techniques

DOEpatents

Hall,; David R. , Fox; Joe, [Spanish Fork, UT

2007-04-03

A downhole drilling system is disclosed in one aspect of the present invention as including a drill string and a transmission line integrated into the drill string. Multiple network nodes are installed at selected intervals along the drill string and are adapted to communicate with one another through the transmission line. In order to efficiently allocate the available bandwidth, the network nodes are configured to use any of numerous burst modulation techniques to transmit data.

Theoretical and experimental research on diversity reception technology in NLOS UV communication system.

PubMed

Han, Dahai; Liu, Yile; Zhang, Kai; Luo, Pengfei; Zhang, Min

2012-07-02

Diversity reception technology is introduced into ultraviolet communication area in this article with theory analysis and practical experiment. The idea of diversity reception was known as a critical effective method in wireless communication area that improves the Gain significantly especially for the multi-scattering channel. A theoretical modeling and simulation method are proposed to depict the principle and feasibility of diversity reception adopted in UV communication. Besides, an experimental test-bed using ultraviolet LED and dual receiver of photomultiplier tube is setup to characterize the effects of diversity receiving in non-line-of-sight (NLOS) ultraviolet communication system. The experiment results are compared with the theoretical ones to verify the accuracy of theoretical modeling and the effect of diversity reception. Equal gain combining (EGC) method was adopted as the diversity mechanism in this paper. The research results of theory and experiment provide insight into the channel characteristics and achievable capabilities of ultraviolet communication system with diversity receiving method.

Enhancing Communication to Improve Patient Safety and to Increase Patient Satisfaction.

PubMed

Burgener, Audrey M

With the continuous rise of sentinel and adverse events due to ineffective communication, it is time for health care organizations to start implementing a focus on enhancing effective communication in which will, in turn, improve patient safety and experience, boosting the bottom line. This article identifies and discusses different communication protocols that can be used to enhance the consistency of more efficient and effective communication within a health care organization to overall improve patient care and patient satisfaction. The rising importance of patient satisfaction and Hospital Consumer Assessment of Healthcare Providers and Systems scores required by the Centers for Medicare and Medicaid Services are causing a shift in how hospitals evaluate and manage their health care organizations today. Following the situation-background-assessment-recommendation and acknowledge-introduce-duration-explain-thank protocols, as well as proper and effective training and educational programs, enhances more effective communication in health care organizations which improves patient safety and increases patient satisfaction.

A Study of Strategic Lessons Learned in Vietnam. Omnibus Executive Summary

DTIC Science & Technology

1980-04-28

for Defense of South Vietnam V-7 VI-I The Enemy Base Area System and Additional Lines of Communication, January 1970 VI-4 VI-2 The Ho Chi Minh Campaign...military would not be justified in resting on its hard-won laurels.-- The judgment of the study team is that the cardinal blame for our ultimate... of the enemies; a lesser but harmful communications gap also existed between the US govern- "ment and its

Laser Transmitter Aims At Laser Beacon

NASA Technical Reports Server (NTRS)

Hemmati, Hamid; Lesh, James R.

1993-01-01

Transmitter part of developmental optical communication system. Compact, lightweight, partially-self-aiming laser transmitter built to verify some capabilities of developmental free-space optical communication system. Design capable of providing 0.5 Mbps data return over range equal to Moon-Earth distance. Breadboard of transmitting terminal constructed and tested in laboratory. Prototype transmitter includes receiving circuitry that keeps it aimed at beacon, once brought into initial alignment within about 1.7 degrees of line of sight to beacon.

Digital communications: Microwave applications

NASA Astrophysics Data System (ADS)

Feher, K.

Transmission concepts and techniques of digital systems are presented; and practical state-of-the-art implementation of digital communications systems by line-of-sight microwaves is described. Particular consideration is given to statistical methods in digital transmission systems analysis, digital modulation methods, microwave amplifiers, system gain, m-ary and QAM microwave systems, correlative techniques and applications to digital radio systems, hybrid systems, digital microwave systems design, diversity and protection switching techniques, measurement techniques, and research and development trends and unsolved problems.

Optical wireless networked-systems: applications to aircrafts

NASA Astrophysics Data System (ADS)

Kavehrad, Mohsen; Fadlullah, Jarir

2011-01-01

This paper focuses on leveraging the progress in semiconductor technologies to facilitate production of efficient light-based in-flight entertainment (IFE), distributed sensing, navigation and control systems. We demonstrate the ease of configuring "engineered pipes" using cheap lenses, etc. to achieve simple linear transmission capacity growth. Investigation of energy-efficient, miniaturized transceivers will create a wireless medium, for both inter and intra aircrafts, providing enhanced security, and improved quality-of-service for communications links in greater harmony with onboard systems. The applications will seamlessly inter-connect multiple intelligent devices in a network that is deployable for aircrafts navigation systems, onboard sensors and entertainment data delivery systems, and high-definition audio-visual broadcasting systems. Recent experimental results on a high-capacity infrared (808 nm) system are presented. The light source can be applied in a hybrid package along with a visible lighting LED for both lighting and communications. Also, we present a pragmatic combination of light communications through "Spotlighting" and existing onboard power-lines. It is demonstrated in details that a high-capacity IFE visible light system communicating over existing power-lines (VLC/PLC) may lead to savings in many areas through reduction of size, weight and energy consumption. This paper addresses the challenges of integrating optimized optical devices in the variety of environments described above, and presents mitigation and tailoring approaches for a multi-purpose optical network.

Experimental semiotics: a new approach for studying communication as a form of joint action.

PubMed

Galantucci, Bruno

2009-04-01

In the last few years, researchers have begun to investigate the emergence of novel forms of human communication in the laboratory. I survey this growing line of research, which may be called experimental semiotics, from three distinct angles. First, I situate the new approach in its theoretical and historical context. Second, I review a sample of studies that exemplify experimental semiotics. Third, I present an empirical study that illustrates how the new approach can help us understand the socio-cognitive underpinnings of human communication. The main conclusion of the paper will be that, by reproducing micro samples of historical processes in the laboratory, experimental semiotics offers new powerful tools for investigating human communication as a form of joint action. Copyright © 2009 Cognitive Science Society, Inc.

Aerogel Antennas Communications Study Using Error Vector Magnitude Measurements

NASA Technical Reports Server (NTRS)

Miranda, Felix A.; Mueller, Carl H.; Meador, Mary Ann B.

2014-01-01

This presentation discusses an aerogel antennas communication study using error vector magnitude (EVM) measurements. The study was performed using 2x4 element polyimide (PI) aerogel-based phased arrays designed for operation at 5 GHz as transmit (Tx) and receive (Rx) antennas separated by a line of sight (LOS) distance of 8.5 meters. The results of the EVM measurements demonstrate that polyimide aerogel antennas work appropriately to support digital communication links with typically used modulation schemes such as QPSK and 4 DQPSK. As such, PI aerogel antennas with higher gain, larger bandwidth and lower mass than typically used microwave laminates could be suitable to enable aerospace-to- ground communication links with enough channel capacity to support voice, data and video links from CubeSats, unmanned air vehicles (UAV), and commercial aircraft.

Aerogel Antennas Communications Study Using Error Vector Magnitude Measurements

NASA Technical Reports Server (NTRS)

Miranda, Felix A.; Mueller, Carl H.; Meador, Mary Ann B.

2014-01-01

This paper discusses an aerogel antennas communication study using error vector magnitude (EVM) measurements. The study was performed using 4x2 element polyimide (PI) aerogel-based phased arrays designed for operation at 5 GHz as transmit (Tx) and receive (Rx) antennas separated by a line of sight (LOS) distance of 8.5 meters. The results of the EVM measurements demonstrate that polyimide aerogel antennas work appropriately to support digital communication links with typically used modulation schemes such as QPSK and pi/4 DQPSK. As such, PI aerogel antennas with higher gain, larger bandwidth and lower mass than typically used microwave laminates could be suitable to enable aerospace-to-ground communication links with enough channel capacity to support voice, data and video links from cubesats, unmanned air vehicles (UAV), and commercial aircraft.

Your Child's Growth

MedlinePlus

... child's feelings and to keep the lines of communication open. Another way to boost your child's mood is to encourage activities that don't focus on height or weight. Special skills and individual qualities, such as musical talent or ...

2. View of south side (Art and Architecture Annex and ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

2. View of south side (Art and Architecture Annex and Communications Building visible to the left) - University of Idaho, YMCA Hut, Northeast corner of University Avenue & Line Street, Moscow, Latah County, ID

33 CFR 222.3 - Clearances for power and communication lines over reservoirs.

Code of Federal Regulations, 2010 CFR

2010-07-01

..., DEPARTMENT OF THE ARMY, DEPARTMENT OF DEFENSE ENGINEERING AND DESIGN § 222.3 Clearances for power and... reservoir projects. (b) Applicability. This regulation applies to all field operating agencies having Civil...

Peer exchange for Southwestern states, May 7-10, 2013.

DOT National Transportation Integrated Search

2013-05-01

The objectives of the peer exchange were the following: : Create networks and open lines of communication. : Develop an understanding of product evaluation programs in other states. : Seek commonalities in research being done and challeng...

The Seven Deadly Sins of Online Microcomputing.

ERIC Educational Resources Information Center

King, Alan

1989-01-01

Offers suggestions for avoiding common errors in online microcomputer use. Areas discussed include learning the basics; hardware protection; backup options; hard disk organization; software selection; file security; and the use of dedicated communications lines. (CLB)

Graphite into Diamonds: Using Teams to Strengthen Intracollegial Interaction.

ERIC Educational Resources Information Center

Weber, Mark D.; Karman, Thomas A.

1989-01-01

In an information-processing organization, it is essential that lines of communications stay open, and that can best be accomplished through cooperative teamwork. Strategies for developing teams in collegiate bureaucracies are discussed. (Author/MLW)

Static-dynamic hybrid communication scheduling and control co-design for networked control systems.

PubMed

Wen, Shixi; Guo, Ge

2017-11-01

In this paper, the static-dynamic hybrid communication scheduling and control co-design is proposed for the networked control systems (NCSs) to solve the capacity limitation of the wireless communication network. The analytical most regular binary sequences (MRBSs) are used as the communication scheduling function for NCSs. When the communication conflicts yielded in the binary sequence MRBSs, a dynamic scheduling strategy is proposed to on-line reallocate the medium access status for each plant. Under such static-dynamic hybrid scheduling policy, plants in NCSs are described as the non-uniform sampled-control systems, whose controller have a group of controller gains and switch according to the sampling interval yielded by the binary sequence. A useful communication scheduling and control co-design framework is proposed for the NCSs to simultaneously decide the controller gains and the parameters used to generate the communication sequences MRBS. Numerical example and realistic example are respectively given to demonstrate the effectiveness of the proposed co-design method. Copyright © 2017 ISA. Published by Elsevier Ltd. All rights reserved.

Construct and face validity of the American College of Surgeons/Association of Program Directors in Surgery laparoscopic troubleshooting team training exercise.

PubMed

Arain, Nabeel A; Hogg, Deborah C; Gala, Rajiv B; Bhoja, Ravi; Tesfay, Seifu T; Webb, Erin M; Scott, Daniel J

2012-01-01

Our aim was to develop an objective scoring system and evaluate construct and face validity for a laparoscopic troubleshooting team training exercise. Surgery and gynecology novices (n = 14) and experts (n = 10) participated. Assessments included the following: time-out, scenario decision making (SDM) score (based on essential treatments rendered and completion time), operating room communication assessment (investigator developed), line operations safety audits (teamwork), and National Aeronautics and Space Administration-Task Load Index (workload). Significant differences were detected for SDM scores for scenarios 1 (192 vs 278; P = .01) and 3 (129 vs 225; P = .004), operating room communication assessment (67 vs 91; P = .002), and line operations safety audits (58 vs 87; P = .001), but not for time-out (46 vs 51) or scenario 2 SDM score (301 vs 322). Workload was similar for both groups and face validity (8.8 on a 10-point scale) was strongly supported. Objective decision-making scoring for 2 of 3 scenarios and communication and teamwork ratings showed construct validity. Face validity and participant feedback were excellent. Copyright © 2012 Elsevier Inc. All rights reserved.

Omics Data Complementarity Underlines Functional Cross-Communication in Yeast.

PubMed

Malod-Dognin, Noël; Pržulj, Nataša

2017-06-10

Mapping the complete functional layout of a cell and understanding the cross-talk between different processes are fundamental challenges. They elude us because of the incompleteness and noisiness of molecular data and because of the computational intractability of finding the exact answer. We perform a simple integration of three types of baker's yeast omics data to elucidate the functional organization and lines of cross-functional communication. We examine protein-protein interaction (PPI), co-expression (COEX) and genetic interaction (GI) data, and explore their relationship with the gold standard of functional organization, the Gene Ontology (GO). We utilize a simple framework that identifies functional cross-communication lines in each of the three data types, in GO, and collectively in the integrated model of the three omics data types; we present each of them in our new Functional Organization Map (FOM) model. We compare the FOMs of the three omics datasets with the FOM of GO and find that GI is in best agreement with GO, followed COEX and PPI. We integrate the three FOMs into a unified FOM and find that it is in better agreement with the FOM of GO than those of any omics dataset alone, demonstrating functional complementarity of different omics data.

Supporting narrative retells for people with aphasia using augmentative and alternative communication: photographs or line drawings? Text or no text?

PubMed

Griffith, Julie; Dietz, Aimee; Weissling, Kristy

2014-05-01

The purpose of this study was to examine how the interface design of an augmentative and alternative communication (AAC) device influences the communication behaviors of people with aphasia during a narrative retell task. A case-series design was used. Four narratives were created on an AAC device with combinations of personally relevant (PR) photographs, line drawings (LDs), and text for each participant. The narrative retells were analyzed to describe the expressive modality units (EMUs) used, trouble sources experienced, and whether trouble sources were repaired. The researchers also explored the participants' perceived helpfulness of the interface features. The participants primarily used spoken EMUs to retell their narratives. They relied on PR photographs more frequently than LDs; however, they reported both picture types to be equally helpful. Text was frequently used and reported as helpful by all 4 people with aphasia. Participants experienced similar rates of trouble sources across conditions; however, they displayed unique trends for successful repairs of trouble sources. For narrative retells, LDs may serve as an effective visual support when PR photographs are unavailable. Individual assessment is necessary to determine the optimum combination of supports in AAC systems for people with aphasia.

Understanding the Logics of Pheromone Processing in the Honeybee Brain: From Labeled-Lines to Across-Fiber Patterns

PubMed Central

Sandoz, Jean-Christophe; Deisig, Nina; de Brito Sanchez, Maria Gabriela; Giurfa, Martin

2007-01-01

Honeybees employ a very rich repertoire of pheromones to ensure intraspecific communication in a wide range of behavioral contexts. This communication can be complex, since the same compounds can have a variety of physiological and behavioral effects depending on the receiver. Honeybees constitute an ideal model to study the neurobiological basis of pheromonal processing, as they are already one of the most influential animal models for the study of general odor processing and learning at behavioral, cellular and molecular levels. Accordingly, the anatomy of the bee brain is well characterized and electro- and opto-physiological recording techniques at different stages of the olfactory circuit are possible in the laboratory. Here we review pheromone communication in honeybees and analyze the different stages of olfactory processing in the honeybee brain, focusing on available data on pheromone detection, processing and representation at these different stages. In particular, we argue that the traditional distinction between labeled-line and across-fiber pattern processing, attributed to pheromone and general odors respectively, may not be so clear in the case of honeybees, especially for social-pheromones. We propose new research avenues for stimulating future work in this area. PMID:18958187

Extending the Binomial Checkpointing Technique for Resilience

DOE Office of Scientific and Technical Information (OSTI.GOV)

Walther, Andrea; Narayanan, Sri Hari Krishna

In terms of computing time, adjoint methods offer a very attractive alternative to compute gradient information, re- quired, e.g., for optimization purposes. However, together with this very favorable temporal complexity result comes a memory requirement that is in essence proportional with the operation count of the underlying function, e.g., if algo- rithmic differentiation is used to provide the adjoints. For this reason, checkpointing approaches in many variants have become popular. This paper analyzes an extension of the so-called binomial approach to cover also possible failures of the computing systems. Such a measure of precaution is of special interest for massivemore » parallel simulations and adjoint calculations where the mean time between failure of the large scale computing system is smaller than the time needed to complete the calculation of the adjoint information. We de- scribe the extensions of standard checkpointing approaches required for such resilience, provide a corresponding imple- mentation and discuss numerical results.« less

Design and performance evaluation of the imaging payload for a remote sensing satellite

NASA Astrophysics Data System (ADS)

Abolghasemi, Mojtaba; Abbasi-Moghadam, Dariush

2012-11-01

In this paper an analysis method and corresponding analytical tools for design of the experimental imaging payload (IMPL) of a remote sensing satellite (SINA-1) are presented. We begin with top-level customer system performance requirements and constraints and derive the critical system and component parameters, then analyze imaging payload performance until a preliminary design that meets customer requirements. We consider system parameters and components composing the image chain for imaging payload system which includes aperture, focal length, field of view, image plane dimensions, pixel dimensions, detection quantum efficiency, and optical filter requirements. The performance analysis is accomplished by calculating the imaging payload's SNR (signal-to-noise ratio), and imaging resolution. The noise components include photon noise due to signal scene and atmospheric background, cold shield, out-of-band optical filter leakage and electronic noise. System resolution is simulated through cascaded modulation transfer functions (MTFs) and includes effects due to optics, image sampling, and system motion. Calculations results for the SINA-1 satellite are also presented.

75 FR 54878 - Notice of Public Information Collection(s) Being Reviewed by the Federal Communications...

Federal Register 2010, 2011, 2012, 2013, 2014

2010-09-09

... (Interstate Common line Support (ICLS)) to replace implicit support in interstate access charges with explicit... performance of the functions of the Commission, including whether the information shall have practical utility...

Deep Lysimeter

DOEpatents

Hubbell, Joel M.; Sisson, James B.

2004-06-01

A deep lysimeter including a hollow vessel having a chamber, a fill conduit extending into the chamber through apertures, a semi-permeable member mounted on the vessel and in fluid communication with the fill conduit, and a line connection for retrieving the lysimeter.

78 FR 37812 - Information Collection Being Reviewed by the Federal Communications Commission Under Delegated...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-06-24

... that include all costs and fees. Cable systems that cover multiple franchise areas having differing franchise fees or other franchise costs, different channel line-ups, or different rate structures may...

34 CFR 600.2 - Definitions.

Code of Federal Regulations, 2013 CFR

2013-07-01

... an amount of work represented in intended learning outcomes and verified by evidence of student..., microwave, broadband lines, fiber optics, satellite, or wireless communications devices; (3) Audio... Loan, Federal PLUS, Federal Supplemental Loans for Students (Federal SLS), and Federal Consolidation...

34 CFR 600.2 - Definitions.

Code of Federal Regulations, 2014 CFR

2014-07-01

... an amount of work represented in intended learning outcomes and verified by evidence of student..., microwave, broadband lines, fiber optics, satellite, or wireless communications devices; (3) Audio... Loan, Federal PLUS, Federal Supplemental Loans for Students (Federal SLS), and Federal Consolidation...

34 CFR 600.2 - Definitions.

Code of Federal Regulations, 2012 CFR

2012-07-01

... an amount of work represented in intended learning outcomes and verified by evidence of student..., microwave, broadband lines, fiber optics, satellite, or wireless communications devices; (3) Audio... Loan, Federal PLUS, Federal Supplemental Loans for Students (Federal SLS), and Federal Consolidation...

Do Emotions Expressed Online Correlate with Actual Changes in Decision-Making?: The Case of Stock Day Traders.

PubMed

Liu, Bin; Govindan, Ramesh; Uzzi, Brian

2016-01-01

Emotions are increasingly inferred linguistically from online data with a goal of predicting off-line behavior. Yet, it is unknown whether emotions inferred linguistically from online communications correlate with actual changes in off-line activity. We analyzed all 886,000 trading decisions and 1,234,822 instant messages of 30 professional day traders over a continuous 2 year period. Linguistically inferring the traders' emotional states from instant messages, we find that emotions expressed in online communications reflect the same distributions of emotions found in controlled experiments done on traders. Further, we find that expressed online emotions predict the profitability of actual trading behavior. Relative to their baselines, traders who expressed little emotion or traders that expressed high levels of emotion made relatively unprofitable trades. Conversely, traders expressing moderate levels of emotional activation made relatively profitable trades.

A Millimeter-wave Cavity-backed Suspended Substrate Stripline Antenna

NASA Technical Reports Server (NTRS)

Simons, Rainee N.

1999-01-01

Future generation satellite communication systems in near-Earth orbit will operate at frequencies in the higher mm-wave frequency hands. These satellite systems require low-profile, high gain, light weight and low cost antennas for communications to and from Earth as well as for inter-satellite links (ISL). At higher mm-wave frequencies, the conductor loss of conventional microstrip line is high and consequently the feed network loss of patch antenna arrays is also high. The high loss lowers the array efficiency and in addition lowers the G/T ratio in a receiving array. Recently a radial line slot antenna array has been demonstrated to have high gain and efficiency at 60 GHz. In this paper, the design, fabrication and characterization of a V-Band (50-75 GHz) 4 x 4 planar array of cavity backed circular aperture antennas with suspended substrate stripline (SSS) corporate feed is presented.

A remote instruction system empowered by tightly shared haptic sensation

NASA Astrophysics Data System (ADS)

Nishino, Hiroaki; Yamaguchi, Akira; Kagawa, Tsuneo; Utsumiya, Kouichi

2007-09-01

We present a system to realize an on-line instruction environment among physically separated participants based on a multi-modal communication strategy. In addition to visual and acoustic information, commonly used communication modalities in network environments, our system provides a haptic channel to intuitively conveying partners' sense of touch. The human touch sensation, however, is very sensitive for delays and jitters in the networked virtual reality (NVR) systems. Therefore, a method to compensate for such negative factors needs to be provided. We show an NVR architecture to implement a basic framework that can be shared by various applications and effectively deals with the problems. We take a hybrid approach to implement both data consistency by client-server and scalability by peer-to-peer models. As an application system built on the proposed architecture, a remote instruction system targeted at teaching handwritten characters and line patterns on a Korea-Japan high-speed research network also is mentioned.

Passive containment cooling system

DOEpatents

Billig, P.F.; Cooke, F.E.; Fitch, J.R.

1994-01-25

A passive containment cooling system includes a containment vessel surrounding a reactor pressure vessel and defining a drywell therein containing a non-condensable gas. An enclosed wetwell pool is disposed inside the containment vessel, and a gravity driven cooling system (GDCS) pool is disposed above the wetwell pool in the containment vessel and is vented to the drywell. An isolation pool is disposed above the GDCS pool and includes an isolation condenser therein. The condenser has an inlet line disposed in flow communication with the drywell for receiving the non-condensable gas along with any steam released therein following a loss-of-coolant accident (LOCA). The condenser also has an outlet line disposed in flow communication with the drywell for returning to the drywell both liquid condensate produced upon cooling of the steam and the non-condensable gas for reducing pressure within the containment vessel following the LOCA. 1 figure.

Finding and Accessing Diagrams in Biomedical Publications

PubMed Central

Kuhn, Tobias; Luong, ThaiBinh; Krauthammer, Michael

2012-01-01

Complex relationships in biomedical publications are often communicated by diagrams such as bar and line charts, which are a very effective way of summarizing and communicating multi-faceted data sets. Given the ever-increasing amount of published data, we argue that the precise retrieval of such diagrams is of great value for answering specific and otherwise hard-to-meet information needs. To this end, we demonstrate the use of advanced image processing and classification for identifying bar and line charts by the shape and relative location of the different image elements that make up the charts. With recall and precisions of close to 90% for the detection of relevant figures, we discuss the use of this technology in an existing biomedical image search engine, and outline how it enables new forms of literature queries over biomedical relationships that are represented in these charts. PMID:23304318

International Symposium on Electromagnetic Compatibility, 25th, Arlington, VA, August 23-25, 1983, Symposium Record

NASA Astrophysics Data System (ADS)

Subjects related to electromagnetic compatibility (EMC) analysis are discussed, taking into account forcing terms of line equations for externally excited transmission lines, E-fields over ground, electromagnetic near fields as a function of electrical size, a program for experimental verification of EMC analysis models, random susceptability of an IC 7400 TTL NAND gate, and a comparison of IEMCAP and SEMCAP. Other topics explored are concerned with EMC measurements, spectrum management, the electromagnetic pulse (EMP), a Navy EMC program, measurement systems, filters, EMC design, electromagnetic vulnerability (EMV) assessment of weapon systems, FCC rules and regulations, shielding, and electromagnetic interference (EMI) in communication systems. Attention is also given to nonsinusoidal functions in radar and communications, transients/electrostatic discharge, open field testing, cables and connectors, interference effects of induced and conducted earth current at dc and ELF, test cells, and cable coupling.

Passive containment cooling system

DOEpatents

Billig, Paul F.; Cooke, Franklin E.; Fitch, James R.

1994-01-01

A passive containment cooling system includes a containment vessel surrounding a reactor pressure vessel and defining a drywell therein containing a non-condensable gas. An enclosed wetwell pool is disposed inside the containment vessel, and a gravity driven cooling system (GDCS) pool is disposed above the wetwell pool in the containment vessel and is vented to the drywell. An isolation pool is disposed above the GDCS pool and includes an isolation condenser therein. The condenser has an inlet line disposed in flow communication with the drywell for receiving the non-condensable gas along with any steam released therein following a loss-of-coolant accident (LOCA). The condenser also has an outlet line disposed in flow communication with the drywell for returning to the drywell both liquid condensate produced upon cooling of the steam and the non-condensable gas for reducing pressure within the containment vessel following the LOCA.

Do Emotions Expressed Online Correlate with Actual Changes in Decision-Making?: The Case of Stock Day Traders

PubMed Central

Liu, Bin; Govindan, Ramesh; Uzzi, Brian

2016-01-01

Emotions are increasingly inferred linguistically from online data with a goal of predicting off-line behavior. Yet, it is unknown whether emotions inferred linguistically from online communications correlate with actual changes in off-line activity. We analyzed all 886,000 trading decisions and 1,234,822 instant messages of 30 professional day traders over a continuous 2 year period. Linguistically inferring the traders’ emotional states from instant messages, we find that emotions expressed in online communications reflect the same distributions of emotions found in controlled experiments done on traders. Further, we find that expressed online emotions predict the profitability of actual trading behavior. Relative to their baselines, traders who expressed little emotion or traders that expressed high levels of emotion made relatively unprofitable trades. Conversely, traders expressing moderate levels of emotional activation made relatively profitable trades. PMID:26765539

A Cascaded Self-Similar Rat-Race Hybrid Coupler Architecture and its Compact Ka-Band Implementation

DTIC Science & Technology

2017-03-01

real-estate and limit the system-level performance, including bandwidth, gain, and energy - efficiency. These many challenges are positioning passive...and are used in numerous RF/mm-wave systems for radar and wireless communications. Although a Marchand balun covers a large bandwidth, it is...requires multiple λ/4 transmission lines (t-lines), making its on-chip designs very costly even for RF/mm-wave bands. Reported miniaturized rat-race

Towards Combined Arms Warfare: A Survey of Tactics, Doctrine, and Organization in the 20th Century.

DTIC Science & Technology

1984-01-01

dilemma forces the enemy to accept casualties while clearing the mines, or to seek a passage elsewhere. It is not sufficient, however, to develop a...range of artillery support and communications, and essentially restricted to foot mobility. Thus another passage of lines would be required. In...control, the 4th Cavalry Division had completed its passage of lines and begun the exploitation within four hours of the initial assault. The

Beyond Line of Sight (BLOS) Command and Control (C2) Capability to Improve Disaster Response and Recovery

DTIC Science & Technology

2013-09-01

on the possible threat of an electromagnetic pulse (EMP) and its potential consequences following the destructive “ derecho ” that hit Washington, DC...in 2012.19 Spanish for the word “straight,” a derecho is a term used to describe a widespread, long- lived, straight-line windstorm that is...emergency communications system and raised concern for future response. Both Hurricane Katrina and the Washington, DC, area derecho have subsequently

Voxel-based Immersive Environments Immersive Environments

DTIC Science & Technology

2000-05-31

3D accelerated hardware. While this method lends itself well to modem hardware, the quality of the resulting images was low due to the coarse sampling...pipes. We will use MPEG video compression when sending video over T1 line, whereas for 56K bit Internet connection, we can use one of the more...sent over the communication line. The ultimate goal is to send the immersive environment over the 56K bps Internet. Since we need to send audio and

Online health communication about human genetics: perceptions and preferences of internet users.

PubMed

Bernhardt, Jay M; McClain, Jacqueline; Parrott, Roxanne L

2004-12-01

Unprecedented advancements in human genetics research necessitate keeping the public abreast of new information, applications, and implications and the Internet represents an important method of communicating with the public. Our research used cross-sectional self-report survey data collected from a diverse convenience sample of 780 Internet users in two states. Multivariate regression analysis explored the relationships between experiences, perceptions, and preferences for online health and genetics communication. Online health information seeking was associated with previous genetic information seeking, comfort with online genetic communication, perceived risk for genetic abnormality, being female, and having more education. Comfort with online genetics communication was associated with a preference for online genetic information, previous online health and off-line genetics information seeking, having a healthy lifestyle, believing in the positive impact of human genetics research, and being female. Perceiving online health information to be accurate was associated with preferring the Internet for genetics communication, being older, less educated, and perceiving Internet use as anonymous. Preferring online genetics communication to other communication channels was associated with perceiving online health information as accurate, being comfortable receiving online genetics information, having lower intrinsic religiosity, and being male. The implications of findings for Web-based health message design are discussed.

Teaching communication with ethnic minority patients: ten recommendations.

PubMed

Seeleman, Conny; Selleger, Veronica; Essink-Bot, Marie-Louise; Bonke, Benno

2011-01-01

Culturally competent communication is indispensable for medical practice in an ethnically diverse society. This article offers recommendations to teach such communication skills based on the experiences of members of a Dutch NMVO Special Interest Group on 'Diversity'. A questionnaire with three open-ended questions on recommendations for training in culturally competent communication was sent to all members (n = 35). Returned questionnaires (n = 23) were analysed qualitatively with a thematic coding framework based on educational themes emerging from the data. All students need to be educated in culturally competent communication. Teachers should stimulate awareness of personal biases and an open attitude. Teach the three core communication skills, listening, exploring and checking, and offer practice with a professional interpreter. Knowledge content should focus on mechanisms relevant to various ethnic groups. Offer students a variety of experiences in a safe environment. All involved should be aware that stereotyping is a pitfall. Training in communication skills for consultation with ethnic minority patients cannot be separated from teaching issues of awareness and knowledge. The shared views on the content of these communication trainings are in line with general patient-centred approaches. The development of proper training in this field demands specific efforts of those involved.

Telemetry Options for LDB Payloads

NASA Technical Reports Server (NTRS)

Stilwell, Bryan D.; Field, Christopher J.

2016-01-01

The Columbia Scientific Balloon Facility provides Telemetry and Command systems necessary for balloon operations and science support. There are various Line-Of-Sight (LOS) and Over-The-Horizon (OTH) systems and interfaces that provide communications to and from a science payload. This presentation will discuss the current data throughput options available and future capabilities that may be incorporated in the LDB Support Instrumentation Package (SIP) such as doubling the TDRSS data rate. We will also explore some new technologies that could potentially expand the data throughput of OTH communications.

Asymmetric information capacities of reciprocal pairs of quantum channels

NASA Astrophysics Data System (ADS)

Rosati, Matteo; Giovannetti, Vittorio

2018-05-01

Reciprocal pairs of quantum channels are defined as completely positive transformations which admit a rigid, distance-preserving, yet not completely positive transformation that allows one to reproduce the outcome of one from the corresponding outcome of the other. From a classical perspective these transmission lines should exhibit the same communication efficiency. This is no longer the case in the quantum setting: explicit asymmetric behaviors are reported studying the classical communication capacities of reciprocal pairs of depolarizing and Weyl-covariant channels.

Monitoring arrangement for vented nuclear fuel elements

DOEpatents

Campana, Robert J.

1981-01-01

In a nuclear fuel reactor core, fuel elements are arranged in a closely packed hexagonal configuration, each fuel element having diametrically opposed vents permitting 180.degree. rotation of the fuel elements to counteract bowing. A grid plate engages the fuel elements and forms passages for communicating sets of three, four or six individual vents with respective monitor lines in order to communicate vented radioactive gases from the fuel elements to suitable monitor means in a manner readily permitting detection of leakage in individual fuel elements.