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Literatura científica selecionada sobre o tema "Communications"

Autor: Grafiati

Publicado: 4 de junho de 2021

Última modificação: 30 de julho de 2024

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Artigos de revistas sobre o assunto "Communications"

Mitchell, Don C. "Communications on Communication". Contemporary Psychology: A Journal of Reviews 33, n.º 1 (janeiro de 1988): 75–76. http://dx.doi.org/10.1037/025318.

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Larasati, Ayu, e Puji Lestari. "CLIENT SERVICE COMMUNICATION’S AUDIT THROUGH DIGITAL COMMUNICATION AT INDONESIA COMMUNICATIONS". Indonesian Journal of Communication Studies 15, n.º 2 (31 de dezembro de 2022): 129. http://dx.doi.org/10.31315/ijcs.v15i2.8277.

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During the COVID-19 pandemic, the Indonesian government implemented policies which required people to work, pray, and study from home or a Work From Home (WFH). Such policies are also carried out by ID COMM to serve clients. Thus, this unprecedented phenomenon changed its communication system. This communication audit research is being conducted, to evaluate the flow of communication that occurs to serving clients in ID COMM. The data that was used for this study is taken from interviews and observation through qualitative methods and literature review. As an agency, ID COMM uses transactional communication Tubbs model. ID COMM encountered some problems while doing its job, such as lack of personal touch and less flexibility when presenting both briefs and work. As a result of that effect on revision frequency. Sometimes, another problem that is encountered by ID COMM, the connection is not that good and also the clients just didn’t understand what PR needs for strategy. However, the client is satisfied with the performance of ID COMM in general.

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Torikai, Tsutomu. "Satellite application technology on communications; Data communication via communications satellite." Journal of the Institute of Television Engineers of Japan 43, n.º 9 (1989): 913–15. http://dx.doi.org/10.3169/itej1978.43.913.

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Tyshchenko, Svitlana. "Ethics if Business Communication in the Management if Mass Communications". Modern Economics 28, n.º 1 (20 de agosto de 2021): 147–52. http://dx.doi.org/10.31521/modecon.v28(2021)-21.

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Abstract. Introduction. At the current stage of development of economics, education, science and technology, the role of communication in interpersonal and business interaction of people is of particular importance, and therefore the urgency of training future professionals in the new environment is growing. There is a need to conduct research and reveal the essence of the concept of mass communication management. It should be noted that communication is seen as a complex multifaceted process of establishing and developing contacts between people, which generates the needs of joint activities and which includes the exchange of information, development of a common strategy of interaction of perception and understanding of another person. Purpose. The aim of the article is to generalize scientific ideas about the theoretical aspects of business communication ethics in mass communication management. Results. In order to form the methodological foundations of the new paradigm of mass communication management, there is a need to analyze the basic categories of communication. Research shows that there are different approaches to defining the categories of “interaction”, “communication” and their role in the management of mass communication. As a result of the research the main features of business communication, its types and forms are singled out. It is determined that communication is a complex process that consists of interdependent aspects, where one of the most important is the ethics of business communication. All information processes in society, we can refer to the term “social communication”. Thus “business communication” is defined as communication which purpose is the organization and optimization of industrial, scientific, commercial or other activity where interests of business, instead of concrete interlocutors come first. Conclusions. It is obvious that the importance of communication in business at the present stage of development of society is constantly growing. This process is explained by the fact that the interaction of communicators in the process of communication inevitably implies their certain mood, moral readiness to participate in the communication process. Such readiness often (and always in the process of business communication) acquires a conscious, volitional character, although sometimes it appears as something deeper, as a kind of subconscious entity. The importance of communication in management is explained by the achievement of the goal both in the organizational process of the enterprise and in the effective exchange of information. We are convinced that business development is possible with the introduction of effective communications as the main tool of the manager.

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Murano, Kazuo. "Future Image Communication. Communication Services. Multimedia Communications Services." Journal of the Institute of Television Engineers of Japan 47, n.º 3 (1993): 290–92. http://dx.doi.org/10.3169/itej1978.47.290.

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Vemou, Konstantina, e Maria Karyda. "Requirements for private communications over public spheres". Information & Computer Security 28, n.º 1 (11 de novembro de 2019): 68–96. http://dx.doi.org/10.1108/ics-01-2019-0002.

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Purpose In the Web 2.0 era, users massively communicate through social networking services (SNS), often under false expectations that their communications and personal data are private. This paper aims to analyze privacy requirements of personal communications over a public medium. Design/methodology/approach This paper systematically analyzes SNS services as communication models and considers privacy as an attribute of users’ communication. A privacy threat analysis for each communication model is performed, based on misuse scenarios, to elicit privacy requirements per communication type. Findings This paper identifies all communication attributes and privacy threats and provides a comprehensive list of privacy requirements concerning all stakeholders: platform providers, users and third parties. Originality/value Elicitation of privacy requirements focuses on the protection of both the communication’s message and metadata and takes into account the public–private character of the medium (SNS platform). The paper proposes a model of SNS functionality as communication patterns, along with a method to analyze privacy threats. Moreover, a comprehensive set of privacy requirements for SNS designers, third parties and users involved in SNS is identified, including voluntary sharing of personal data, the role of the SNS platforms and the various types of communications instantiating in SNS.

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Imre, S. "Quantum communications: explained for communication engineers". IEEE Communications Magazine 51, n.º 8 (agosto de 2013): 28–35. http://dx.doi.org/10.1109/mcom.2013.6576335.

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MOTAI, AKIO. "Multimedia Mobile Communication System. Multimedia Mobile Communications." Journal of the Institute of Electrical Engineers of Japan 116, n.º 7 (1996): 401–3. http://dx.doi.org/10.1541/ieejjournal.116.401.

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Hey, Maya. "Fermenting Communications: Fermentation Praxis as Interspecies Communication". Public 30, n.º 59 (1 de junho de 2019): 149–57. http://dx.doi.org/10.1386/public.30.59.149_1.

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Hey, Maya. "Fermenting Communications: Fermentation Praxis as Interspecies Communication". Public 31, n.º 59 (1 de junho de 2019): 149–57. http://dx.doi.org/10.1386/public.31.59.149_1.

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Microbes are in, on, and around us at all times, yet we cannot easily communicate with them. How do we (continue to) live with microbial life in ways that allow for our mutual thriving? Using a performative lens, this paper analyzes the material practices of fermentation as a way of connecting with different scales of life. It attempts to challenge conventional understandings of communications (e.g. encoding/decoding models put forth by Stuart Hall) by examining the layered manner in which fermentation engages with matter and meaning. The material practices of fermentation require embodied knowledge to work with microbial life, and the discursive considerations of fermentation challenge anthropocentric thought. Thus, materially and discursively, fermentation functions as a continual form of engagement. Thought of as a form of communication, fermentation helps us to consider some of the invisible relations we have with microbes and connect with micro-species we often take for granted.

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Teses / dissertações sobre o assunto "Communications"

Kodikara, Patabandi C. K. "Multimedia communications over 3G wireless communication systems". Thesis, University of Surrey, 2004. http://epubs.surrey.ac.uk/844270/.

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This thesis addresses the transmission of video over third generation radio access networks. The first part of the thesis investigates the capabilities of Universal Terrestrial Radio Access Networks (UTRAN) in terms of the provision of multimedia communications. The error performance and traffic requirements of real-time video transmission over circuit switched and packet switched connections are examined. The effect of network parameter settings upon video performances is evaluated, and optimum radio bearer configurations for the transmission of video are derived. A method of estimating received video quality after transmission over error prone environments is developed. The quality estimation is based on a distortion model, which accurately models the overall distortion seen in decoder frame reconstruction. This includes quantisation distortion, concealment distortion, and error propagation. Based on the developed performance model, optimum MTU (Maximum Transfer Unit) size for efficient wireless video communications over a packet switched access network is derived. The second part of the thesis investigates quality enhancement techniques for multimedia traffic transmitted over wireless channels. Quality enhancement is achieved at three levels of the transmission process: link level, application level and system level. Link level quality enhancement techniques are designed to optimise the allocation of link level parameter values according to the media characteristics. A novel Unequal Error Protection scheme and a novel Unequal Power Allocation scheme are designed to exploit the inherent diversity in the subjective importance of different sections of compressed media. The algorithms are developed and analysed for transmission of video over 3G wireless systems. The effectiveness of these algorithms is demonstrated through the results of simulated transmission over a UMTS channel. Application level quality enhancement techniques are designed to explore the time-varying nature of the wireless channel. A number of link adaptation schemes are proposed for real time video communication and real-time video streaming over 3G wireless systems. These algorithms are designed to enhance the perceptual video quality, and the system utilisation. This is achieved by adapting the allocated radio network parameters and the source parameters, according to a feedback channel condition. Simulation results show a significant performance improvement compared to non-adaptive schemes. Finally, system level adaptation techniques are designed for efficient radio resource allocation in multi-user scenarios. Two adaptive resource allocation schemes are proposed and analysed for real-time video communications in a UMTS system. The proposed algorithms are shown to provide improved performances in terms of average received video quality and user satisfaction. Key words: Wireless Communication, Multimedia communication. Video Transmission.

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Bezuidenhout, Quintus. "Satellite communications strategy selection for optimal LEO satellite communication". Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/71930.

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Thesis (MScEng)--Stellenbosch University, 2012.
ENGLISH ABSTRACT: A low earth orbit satellite system can be useful in numerous communication applications where physical connections are not possible. Communication time available from any point on earth to the satellite is less than one hour per day. This one hour is fragmented into smaller time slots due to the satellite orbiting. This is not much time to transfer data and there is even less time available to transfer data when there are other external factors affecting the system. It is thus crucial to optimise the satellite communications link so that more data can be transferred per orbit. The goal of this thesis is to improve the performance of a low earth orbit satellite communication channel by varying certain parameters of the system, such as the protocol used, modulation scheme, packet size, transmission power etc. and then to observe how these parameters influence the system. The protocols that were chosen to be implemented are CSMA-CA, CSMA-CA with DSSS technology and Round-Robin Polling. A simulator for each protocol was designed with the Opnet platform, so that specific parameters could be changed and the results observed, in order to optimise the communications link between the satellite and ground stations. The results showed that there is no particular configuration of modulation scheme, packet size, transmission power etc. presenting the best overall solution for LEO satellite communications. It must be considered what the specific LEO satellite application would be used for and the characteristics required by that specific application. A suitable configuration must subsequently be chosen from the set of configurations available to satisfy most of the application requirements.
AFRIKAANSE OPSOMMING: ’n Satelliet met ’n lae wentelbaan kan gebruik word in verskeie kommunikasie toepassings waar fisiese verbindinge nie noodwendig moontlik is nie. Die kommunikasietyd van enige punt van aarde af na die satelliet, is minder as een uur per dag. Hierdie tyd word nog verder verklein omdat die satelliet besig is om, om die aarde te wentel. ’n Uur is glad nie baie tyd om data oor te dra nie en in realiteit is daar nog minder tyd beskikbaar as daar eksterne faktore op die sisteem inwerk. Dus is dit baie belangrik om die satelliet kommunikasiekanaal te optimiseer sodat soveel moontlik data as moontlik oorgedra kan word per omwenteling. Die doel van hierdie tesis is om die deurset van die kommunikasiekanaal van n lae wentelbaan satelliet te optimiseer, deur verskeie parameters te verander soos, protokol wat gebruik word, modulasie skema, pakkie grootte, transmissiekrag ens. en dan waar te neem hoe dit die sisteem beïnvloed. Die protokolle wat geïmplementeer is, is CSMA-CA, CSMA-CA met DSSS tegnologie en Round-Robin Polling. ’n Simulator vir elke protokol was ontwerp in die Opnet simulasie platform, sodat die spesifieke parameters verander kon word om die resultate te bestudeer met die doel om die kommunikasiekanaal tussen die satelliet en grond stasies optimaal te benut. Die resultate het bewys dat daar geen spesifieke konfigurasie van modulasie skema, pakkie grootte, transmissiekrag ens. is wat die algehele beste oplossing is nie. Die spesifieke applikasie waarvoor die lae wentelbaan satelliet gaan gebruik word moet geanaliseer word sowel as die spesifieke karakteristieke van daai applikasie. Daarvolgens moet n unieke konfigurasie opgestel word wat meeste van die applikasie se behoeftes bevredig.

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Murphy, Melvin Murphy. "Internal Strategies for Assessing Organizational Communication Channel Effectiveness". ScholarWorks, 2017. https://scholarworks.waldenu.edu/dissertations/3406.

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Evolving communication technology, the increased volume of information needed by businesses, and the intensified competitive environment have made internal company communication more critical to business success. The purpose of this multiple case study was to explore strategies used by managers and leaders of 3 law firms in the Commonwealth of Virginia for assessing the effectiveness of their organization's internal communication channels. The participating firms were recognized by their peers as being exceptionally well-managed. Data from interviews and company documents were analyzed through the conceptual lens of the channel expansion theory and the use of software coding to identify patterns and themes. Three important themes emerged: informal assessment strategies, indirect assessment strategies, and efficient versus timely assessments. The first theme suggested the effectiveness of an informal assessment strategy, depending on the size and complexity of the organization. The second theme reflected the effectiveness of an indirect assessment for organizations that lack the resources to support a more direct and specific assessment process. The third theme reflected the participants' perceptions of informal and indirect assessments may be more efficient, the feedback from the assessments are often less timely. Managers may consider these themes in formulating communication policies. The findings of this case study may have implications for positive social and economic change. Small professional service firms, such as legal firms, provide important services to individuals, families, and businesses in their community.

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Radford, Benjamin. "Misinformation in eating disorder communications| Implications for science communication policy". Thesis, State University of New York at Buffalo, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=1546959.

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Though eating disorders are a serious public health threat, misinformation about these potentially deadly diseases is widespread. This study examines eating disorder information from a wide variety of sources including medical journals, news reports, and popular social activist authors. Examples of misinformation were identified, and three aspects of eating disorders (prevalence, mortality, and etiology) were chosen as key indicators of scientific illiteracy about those illnesses. A case study approach was then adopted to trace examples of misinformation to their original sources whenever possible. A dozen examples include best-selling books, national eating disorder information clearinghouses; the news media; documentary feature films; and a PBS television Nova documentary program. The results provide an overview of the ways in which valid information becomes flawed, including poor journalism, lack of fact-checking, plagiarism, and typographical errors. Less obvious—and perhaps even more important—much of the misinformation results from scientific research being co-opted to promote specific sociopolitical agendas. These results highlight a significant gap in science communication between researchers, the medical community, and the public regarding these diseases, and recommendations to address the problem are offered.

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Rajapakshalage, D. (Dhanushka). "Infrastructure based communication architecture to facilitate autonomous driving and communications". Master's thesis, University of Oulu, 2019. http://jultika.oulu.fi/Record/nbnfioulu-201909242926.

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Abstract. The traditional autonomous vehicle (AV) architecture places a heavy burden on graphics processing units of the vehicle due to heavy signal processing requirements. Ultimately this results in performance degradation in AVs. This is mainly due to advanced sensors, which enable the vision for AVs, like Light Detection and Ranging (LiDAR), radars and cameras. In most of the AV models accepted by many leading automobile companies, LiDAR plays a significant role. It generates a high definition (HD) point cloud of the surroundings to obtain a precise map. AV makes decisions based on that by processing Terabyte (Tb) scale data within the AV. Still, vehicle-mounted LiDARs are not capable of providing information beyond a human driver’s vision. To provide a solution for the above-mentioned drawbacks of the traditional AVs, we propose an infrastructure based communication architecture to facilitate autonomous driving and communications. A set of coordinated LiDAR modules with integrated transceivers, which are mounted at an elevation with a bird’s eye view, can provide a much larger field of vision (FoV). Decisions are taken from a centralized body. We prove the technical feasibility of the system from sensing and communication point of view. The proposed architecture can play a supportive role with traditional AV architectures and it can be applied to many cases such as to automate harbours and factory floors. In the second part of the thesis, we address a resource allocation problem with ultra-reliable and low latency communication (URLLC) for a factory floor. We have analytically proven the capability of the proposed system to establish a reliable (packet error probability less than 10^(-5)) and low latency (less than 1 ms transmission delay) links with sufficient throughput (kilobit scale) using a convex optimization problem. Latency, throughput and reliability variations are studied under the short packet transmission of the proposed system.

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Gregersen, Svein Erik Søndervik. "Underwater Communications : An OFDM-system for Underwater Communications". Thesis, Norwegian University of Science and Technology, Department of Electronics and Telecommunications, 2007. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-8735.

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In the fall 2006 NTNU (The Norwegian University and Science and Technology) initiated a strategic project in cooperations with SINTEF where the aim is to gain more knowledge about underwater acoustic communications. This study is a part of this project and focuses on a system for underwater communication. A orthogonal frequency division multiplexing (OFDM) system using differential quadrature phase shift keying (DQPSK) has been defined and implemented in MATLAB. The system has been characterized through thorough simulations and testing. Initial measurements has also been carried out in order to test the developed system on a real underwater acoustic channel and the results have been analysed.

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Wong, Chi Chong. "Personal communications". Thesis, Massachusetts Institute of Technology, 1991. http://hdl.handle.net/1721.1/70862.

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Lichtman, Marc Louis. "Antifragile Communications". Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/72267.

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Jamming is an ongoing threat that plagues wireless communications in contested areas. Unfortunately, jamming complexity and sophistication will continue to increase over time. The traditional approach to addressing the jamming threat is to harden radios, such that they sacrifice communications performance for more advanced jamming protection. To provide an escape from this trend, we investigate the previously unexplored area of jammer exploitation. This dissertation develops the concept of antifragile communications, defined as the capability for a communications system to improve in performance due to a system stressor or harsh condition. Antifragility refers to systems that increase in capability, resilience, or robustness as a result of disorder (e.g., chaos, uncertainty, stress). An antifragile system is fundamentally different from one that is resilient (i.e., able to recover from failure) and robust (i.e., able to resist failure). We apply the concept of antifragility to wireless communications through several novel strategies that all involve exploiting a communications jammer. These strategies can provide an increase in throughput, efficiency, connectivity, or covertness, as a result of the jamming attack itself. Through analysis and simulation, we show that an antifragile gain is possible under a wide array of electronic warfare scenarios. Throughout this dissertation we provide guidelines for realizing these antifragile waveforms. Other major contributions of this dissertation include the development of a communications jamming taxonomy, feasibility study of reactive jamming in a SATCOM-type scenario, and a reinforcement learning-based reactive jamming mitigation strategy, for times when an antifragile approach is not practical. Most of the jammer exploitation strategies described in this dissertation fall under the category of jammer piggybacking, meaning the communications system turns the jammer into an unwitting relay. We study this jammer piggybacking approach under a variety of reactive jamming behaviors, with emphasis on the sense-and-transmit type. One piggybacking approach involves transmitting using a specialized FSK waveform, tailored to exploit a jammer that channelizes a block of spectrum and selectively jams active subchannels. To aid in analysis, we introduce a generalized model for reactive jamming, applicable to both repeater-based and sensing-based jamming behaviors. Despite being limited to electronic warfare scenarios, we hope that this work can pave the way for further research into antifragile communications.
Ph. D.

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Дядечко, Алла Миколаївна, Алла Николаевна Дядечко, Alla Mykolaivna Diadechko e A. N. Zholudeva. "Marketing communications". Thesis, Видавництво СумДУ, 2010. http://essuir.sumdu.edu.ua/handle/123456789/18327.

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Marketing communications is defined by actions a firm takes to communicate with end-users, consumers and external parties. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/18327

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Vantine, Karin. "Communications sourcebook /". Online version of thesis, 1992. http://hdl.handle.net/1850/11867.

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Livros sobre o assunto "Communications"

Systems, Communications/Information, ed. Communication systems acquisitions: Communications systems & services. Boston, MA (200 Portland St., Boston 02114): Yankee Group, 1988.

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1919-1981, Mucchielli Roger, ed. Communication et réseaux de communications: Séminaire. 7^a ed. Paris: Entreprise moderne d'édition, 1988.

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Police, Illinois State. Communications: Communications equipment technician. Springfield, Ill: ISP Central Printing Section, 2008.

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Police, Illinois State. Communications: Communications equipment technician. Springfield, Ill: ISP Central Printing Section, 2003.

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Kerrod, Robin. Communications. New York: Marshall Cavendish, 1994.

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Egan, Manus. Communications. London: Macmillan Education UK, 1986. http://dx.doi.org/10.1007/978-1-349-07816-5.

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Root, Betty. Communications. London: Harper Collins, 1991.

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Ian, Graham. Communications. Austin, Tex: Steck-Vaughn Library, 1991.

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Paul, Hayes, Pelowich Nadia, Rowden Rick e Bennett Scott, eds. Communications. Milwaukee: Penworthy Pub. Co., 1987.

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Books, Time-Life, ed. Communications. Alexandria, Va: Time-Life Books, 1990.

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Capítulos de livros sobre o assunto "Communications"

Stelling, Oliver. "Communication vs. Communications". In CommunicAsian, 20–31. London: Routledge, 2023. http://dx.doi.org/10.4324/9781003385622-3.

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Westphal, L. C. "Communications". In Sourcebook of Control Systems Engineering, 139–57. Boston, MA: Springer US, 1995. http://dx.doi.org/10.1007/978-1-4615-1805-1_7.

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Westphal, Louis C. "Communications". In Handbook of Control Systems Engineering, 129–46. Boston, MA: Springer US, 2001. http://dx.doi.org/10.1007/978-1-4615-1533-3_7.

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Paul, Aidan. "Communications". In Flemings, 99–107. London: Macmillan Education UK, 1989. http://dx.doi.org/10.1007/978-1-349-10985-2_10.

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Noll, Roger G. "Communications". In The World of Economics, 87–98. London: Palgrave Macmillan UK, 1991. http://dx.doi.org/10.1007/978-1-349-21315-3_13.

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Hargitay, Stephen, e Timothy Dixon. "Communications". In Software Selection for Surveyors, 92. London: Palgrave Macmillan UK, 1991. http://dx.doi.org/10.1007/978-1-349-21696-3_17.

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Mason, S. "Communications". In Work Out Social and Economic History GCSE, 186–221. London: Macmillan Education UK, 1988. http://dx.doi.org/10.1007/978-1-349-10295-2_10.

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Florman, Larry D. "Communications". In The Portable Medical Mentor, 25–29. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-09852-4_6.

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McGinnis, Kevin. "Communications". In Emergency Medical Services, 113–22. Chichester, UK: John Wiley & Sons, Ltd, 2015. http://dx.doi.org/10.1002/9781118990810.ch85.

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Taha, Walid M., Abd-Elhamid M. Taha e Johan Thunberg. "Communications". In Cyber-Physical Systems: A Model-Based Approach, 129–44. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-36071-9_8.

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Trabalhos de conferências sobre o assunto "Communications"

Williams, Dean S. "Do Your Communications Measure Up?" In NCSL International Workshop & Symposium. NCSL International, 2012. http://dx.doi.org/10.51843/wsproceedings.2012.19.

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While we sometimes agonize over the accuracy of a value five places to the right of the decimal point (after all that is what metrologists do), we sometimes don't put as much thought into how we communicate important information and ideas related to the business of metrology. Whether it's presenting the findings of our research, requesting funding for a new project or new equipment, or obtaining buy-in from stakeholders for a change in how we conduct business, the measure of effectiveness of our communications should be paramount. It doesn't matter how good an idea or how solid the data, if it can't be effectively communicated its potential influence is diminished if not entirely negated. Let's be honest, many of us in this industry are brilliant in our own way, but fear we lack the skills and personality to be great communicators (not many Ronald Reagan's among us). Our technical backgrounds also make us suspicious of those flashy promoter types that always have something to sell, and we certainly don’t want to be seen as one of those. The truth is effective communication doesn't have to be slick or flashy, but it does have to have some key elements if it is going to be effective. While an outgoing personality can certainly help when it comes to making a presentation, that alone is not enough to ensure the right message was communicated effectively. So how do we improve our communications? By what measure should we evaluated our message? Many of the underlying elements of effective communication apply to both written and oral presentations, but for the purpose of this paper we will focus on oral communications and presentations. This paper will provide a blueprint for more effective communication, including:  The single most important question to ask yourself before preparing any communication  The essential elements every effective communication should include  The proven best method to communicate any message  The six hurdles that must be addressed when communicating change  The key to making better PowerPoint presentations

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Deng, Qiuzhuo, Lu Zhang, Hongqi Zhang, Zuomin Yang, Xiaodan Pang, Vjačeslavs Bobrovs, Sergei Popov et al. "Quantum Noise Secured Terahertz Communications". In Optical Fiber Communication Conference. Washington, D.C.: Optica Publishing Group, 2023. http://dx.doi.org/10.1364/ofc.2023.w2a.33.

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The quantum noise based terahertz signal encryption scheme is proposed, a 16 Gbits-1 secure terahertz communication system at 300 GHz with the optical communication realms is demonstrated, taking a significant step toward high-security wireless communications.

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Zhdanova, Svetlana Nikolaevna. "INTERCULTURAL COMMUNICATIONS AS A SCIENTIFIC AND PROFESSIONAL PHENOMENON". In Сollection of articles. Publishing house Sreda, 2019. http://dx.doi.org/10.31483/r-53723.

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In the course of a theoretical analysis, the concepts of “communication” and “intercultural communication” are clarified, the relevance of intercultural professional and scientific - pedagogical communications in an information society, expanding the scale of intercultural interaction of teachers, is revealed. The necessity of the development of intercultural communicative competence of the teacher as a result of the development of intercultural communications in professional - pedagogical activity is substantiated.

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Hacker, G. "Homodyne Detection for Optical Space Communications". In Coherent Laser Radar. Washington, D.C.: Optica Publishing Group, 1987. http://dx.doi.org/10.1364/clr.1987.thb1.

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Optical communication systems offer significant advantages over conventional microwave communications. They have the potential to provide high rate data links between satellites. Moving on to the optical frequency regime provides increased antenna gain with small congestion occuring in microwave communications. These properties and the high privacy due to the high directivity and small beam width make optical communications systems an ideal candidate for future intersatellite/interorbit data links.

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Araki, K., M. Toyoda, M. Shikatani, Y. Arimoto e T. Aruga. "Development of an experimental space laser-communications system". In OSA Annual Meeting. Washington, D.C.: Optica Publishing Group, 1993. http://dx.doi.org/10.1364/oam.1993.fl.4.

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In order to develop basic technologies in the area of space laser communications, Communications Research Laboratory (CRL) has been engaged in development of an experimental laser communication payload for the Engineering Test Satellite VI (ETS-VI) and a ground optical system.

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Karlsson, Goobar e Björk. "Quantum Optics in Communications". In The European Conference on Lasers and Electro-Optics. Washington, D.C.: Optica Publishing Group, 1996. http://dx.doi.org/10.1364/cleo_europe.1996.cthp1.

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Over the last decade, there has been several demonstrations of applications of quantum optics for optical communication. Examples include low noise ”squeezed” light, low noise amplification and detection, and secure communications - quantum cryptography using Heisenberg’s uncertainty principle as the garantuee for the detection of unwanted eavesdroppers.

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Vinnikov, A. A. "Multi-antenna systems for wireless communications". In Modern Problems of Telecommunications - 2024. Siberian State University of Telecommunications and Information Systems, 2024. http://dx.doi.org/10.55648/spt-2024-1-237.

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The article discusses multi-antenna systems for wireless communications (MIMO), which play a key role in modern data transmission technologies. These systems use multiple antennas to simultaneously transmit and receive data, increasing communication capacity and reliability

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Takahashi, Takashi, Naoko Yoshimura, Akira Akaishi, Norihiko Katayama, Morio Toyoshima, Naoto Kadowaki, Shojiro Ishibashi, Tatsuya Fukuda e Hiroshi Yoshida. "The Tele-Operation Experiment of the Hybrid Remotely Operated Vehicle Using Satellite Link". In ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/omae2015-41645.

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Communication via satellite is the only method for communicating between the ocean and land. However, present commercial satellites cannot provide sufficient bandwidth to transmit the requisite volume of data. The National Institute of Information and Communications Technology (NICT) and the Japan Agency for Marine-Earth Science and Technology (JAMSTEC) conducted broadband satellite communication experiments with the Wideband Inter-Networking engineering test and Demonstration Satellite (WINDS). Using WINDS, the tele-operation of a hybrid remotely operated vehicle (HROV), Otohime, was also carried out successfully.

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Little, Thomas D. C., Ashish Agarwal, Jimmy Chau, Matt Figueroa, Aaron Ganick, Johnathan Lobo, Travis Rich e Peter Schimitsch. "Directional communication system for short-range vehicular communications". In 2010 IEEE Vehicular Networking Conference (IEEE VNC). IEEE, 2010. http://dx.doi.org/10.1109/vnc.2010.5698230.

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Wei Li, Mingfeng Li e Yanyan Hao. "A high reliable satellite communication for emergency communications". In IET International Conference on Communication Technology and Application (ICCTA 2011). IET, 2011. http://dx.doi.org/10.1049/cp.2011.0781.

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Relatórios de organizações sobre o assunto "Communications"

Galassi, Mark C. DIORAMA Communications. Office of Scientific and Technical Information (OSTI), maio de 2016. http://dx.doi.org/10.2172/1253557.

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Reid, D. Crisis communications. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1994. http://dx.doi.org/10.4095/193905.

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Tailor, Sanjay. Wireless Communications. Fort Belvoir, VA: Defense Technical Information Center, junho de 1996. http://dx.doi.org/10.21236/ada310023.

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Mahadevan, L., David Walt e George M. Whitesides. Chemical Communications. Fort Belvoir, VA: Defense Technical Information Center, abril de 2012. http://dx.doi.org/10.21236/ada577781.

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Omenetto, Fiorenzo G., e David L. Kaplan. Chemical Communications. Fort Belvoir, VA: Defense Technical Information Center, outubro de 2012. http://dx.doi.org/10.21236/ada577840.

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Preckshot, G. G. Data communications. Office of Scientific and Technical Information (OSTI), agosto de 1993. http://dx.doi.org/10.2172/10178199.

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SECRETARY OF THE AIR FORCE WASHINGTON DC. Communications and Information: Communications Security (COMSEC) User Requirements. Fort Belvoir, VA: Defense Technical Information Center, novembro de 1997. http://dx.doi.org/10.21236/ada404977.

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Bohl, Dwight. Communications and Information. Communications Security: Protected Distribution Systems (PDS). Fort Belvoir, VA: Defense Technical Information Center, dezembro de 2000. http://dx.doi.org/10.21236/ada404837.

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SECRETARY OF THE AIR FORCE WASHINGTON DC. Communications and Information: Compendium of Communications and Information Terminology. Fort Belvoir, VA: Defense Technical Information Center, fevereiro de 2002. http://dx.doi.org/10.21236/ada404985.

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Waltjen, K., C. Romero, S. Azevedo, F. Dowla, A. Spiridon, D. Benzel e P. Haugen. Ultra-wideband Communications. Office of Scientific and Technical Information (OSTI), fevereiro de 2004. http://dx.doi.org/10.2172/15013960.

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