Dissertations / Theses on the topic 'Communication Boards'
To see the other types of publications on this topic, follow the link: Communication Boards.
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 dissertations / theses for your research on the topic 'Communication Boards.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
1
Macke, Robin A. (Robin Ann). "Preservice Teacher Attitudes towards Nonvocal Individuals using High Technology Augmentative Communication Devices versus Low Technology Communication Boards." Thesis, University of North Texas, 1992. https://digital.library.unt.edu/ark:/67531/metadc277750/.
Full textAbstract:
The attitudes of preservice teachers towards individuals who are nonvocal and using either a high technology augmentative communication (HAC) device or a low technology communication board were investigated. A rating scale was devised, consisting of three sub-scales. The three sub-scales measured preservice teachers' estimates of intelligence, academic potential, and social acceptance in the regular education setting. Reliability and validity were established through a pilot study. Preservice teachers viewed videotapes of children using either high technology or low technology augmentative communication devices and subsequently completed the rating scale based on the videotapes. Results indicated that preservice teachers perceived the same child as having greater academic and social acceptance potential when using high technology augmentative communication.
2
Vargas, Leah E. "The Ideology of the Federal Policy and Institutional Review Boards and its Effects on Research." Scholarly Commons, 2013. https://scholarlycommons.pacific.edu/uop_etds/208.
Full textAbstract:
The Federal Policy for the protection of human subjects in research is built on a positivist ideology which effects Institutional Review Boards (IRB) and the research it reviews. An ideological criticism of the regulations through a positivist and postmodernist perspective reveals its initial purpose for biomedical research and its negative effects on research not discussed during its development. Such effects are a shift in focus on regulation over ethics in IRBs, extended oversight of regulations, revisions in research design and objectives, and self-regulation through the punishment of noncompliance.
3
Nässla, Hans. "Intra-Family Information Flow and Prospects for Communication Systems." Licentiate thesis, Linköping University, Department of Computer and Information Science, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-5672.
Full textAbstract:
Today, information and communication technology is not only for professional use, but also for private tasks. In this thesis, the use of such technology for managing family information flow is investigated. Busy family life today, with school, work and leisure activites, makes coordination and synchronisation a burden. In what way cell-phones and Internet provides a support for those tasks is investigated, together with proposals for future technology.
The problem with coordination and synchronisation were found to be managed by a bulletin board placed at a central point at home. Besides the bulletin board, we found that calendars, shopping lists, and to-do lists are important. The families we investigated in field studies were all intensive users of both Internet and cell-phones.
Since the bulletin board played such an important role in the family life, we equipped families with cameras to be able to track what happened at those places with help of photo diaries. The field studies revealed that each family had their own unconscious procedure to manage the flow of notes on the bulletin board.
With technology, new problem will emerge. We investigated how notes on typical family bulletin boards may be visualised on a computer screen, and compared click-expand, zoom-pan and bifocal interfaces. The click-expand interface was substantially faster for browsing, and also easier to use.
An advantage of information and communication technology is that it may provide possibilities for multiple interfaces to information, and not only different terminals but also from different places. At home, a digital refrigerator door or a mobile web tablet; at work or at school, a conventional computer; when on the move, a cell-phone or a PDA. System architecture for these possibilities is presented.
Report code: LiU-TEK-LIC-2004:39.
4
Phelps-Hillen, Johanna. "Institutional Review Boards and Writing Studies Research: A Justice-Oriented Study." Scholar Commons, 2017. http://scholarcommons.usf.edu/etd/6742.
Full textAbstract:
In this multi-method dissertation project I conduct policy analysis and utilize results from a discipline-wide survey (n=258) to examine the intersection of Writing Studies researchers’ disciplinary affiliation, research context, and personal disposition in relation to the local implementation of federal policy regarding human subjects research. I elaborate on the context of this project, discussing the September 2015 release of the Notice of Proposed Rulemaking (NPRM) to revise and update the Common Rule, 45.CFR Part 46, and the Conference on College Composition and Communication’s formal comment in response to the proposed rule’s provisions. I discuss the process of designing and implementing the survey used to establish a disciplinary representation of Writing Studies researchers’ perceptions of, and experiences with, IRBs. The results of this survey (Chapter 4) indicate how Writing Studies researchers presently interface with the process of local policy implementation. In Chapter 5, data from the survey are set against the Final Rule (released January 19, 2017) to provide a new taxonomy for Writing Studies researchers regarding how to interface with IRBs. Finally, the major theoretical contribution is articulated in Chapter Six: a call for human subjects researchers in Writing Studies to consider IRBs as justice-oriented, rather than positivist, in design and purpose. I argue increasingly reciprocal relationships between IRBs and Writing Studies researchers will help ensure Writing Studies research is not overly influenced by IRB review, nor that Writing Studies researchers are unwilling or unable to interface with IRBs to build more ethical and robust research agendas.
5
Riley, Sarah E. "Expressions of Concern and Social Support about Reproductive Care for Young Women on an Online Message Board." UKnowledge, 2013. http://uknowledge.uky.edu/comm_etds/19.
Full textAbstract:
The experience of a pelvic exam or Pap smear is something that, while necessary to maintain reproductive health, can be fraught with difficulty for women. Ouj, Igberase, Exe, and Ejikeme (2011) note that “[m]ost women feel a level of discomfort or pain and for some it is embarrassing, dehumanizing, degrading and associated with fear, anxiety and apprehension” (p. 637). However, little recent research has focused on the specific communication surrounding reproductive care for young women. The Internet is a common place for young people to seek health information, understand their own health risks, and seek social support from others. The current study utilizes information gleaned from the archives of an internet message board and sexual education website to examine the way that young women communicate about reproductive health care, risk, and social support with experts and peers in the online community. Results indicate that young women request, seek, and receive several different types of social support in the online community. Further, themes illuminate the complex nature of women’s concerns about potential risk and reproductive care.
6
Tangpijaikul, Montri. "The Thai university student's fine-tuning of discourse in academic essays and electronic bulletin boards performance and competence /." Phd thesis, Australia : Macquarie University, 2009. http://hdl.handle.net/1959.14/73139.
Full textAbstract:
Thesis (DAppLing)--Macquarie University, Faculty of Human Sciences, Dept. of Linguistics, 2009.Bibliography: p. 208-233.
Introduction -- Conceptual frameworks: language competence and the acquisition of modality -- Generic frameworks: speech, writing and electronic communication -- Linguistic frameworks: modality and related concepts -- Research design and methodologies -- FTDs in the ACAD and BB corpora -- Learner's use of FTDs in discoursal context and their individual repertoires -- Conclusions and implications.
While natural interaction is one of the important components that lead to successful language learning (Vygotsky 1978, 1986), communication in classroom practice in Thailand is mostly teacher-centered and not genuinely interactive. Online group communication is different because it allows learners to exercise interpersonal communicative skills through interaction and meaning negotiation, as in reciprocal speech situations. At the same time it gives learners time to think and produce language without having to face the kind of pressure they feel in face-to-face classroom discussion. The language learner's competence is thus likely to be enhanced by opportunities to communicate online, and to be more visible there than in academic contexts, although there is a dearth of experimental research to show this. One way of investigating the pedagogical potential of bulletin board discussions is to focus on the interpersonal linguistic devices used in textual interactions (Biber 1988). -- The purpose of this research is to find out whether students communicating online in bulletin board writing will exercise their repertoires of linguistic fine-tuning devices (hedges, modals, and intensifiers) more extensively than when writing academic essays. This was expected because hedges, modals and intensifiers are likely to be found in interactive discussions (Holmes 1983), while academic tasks do not create such an environment. Though hedges and modal devices are also found in academic genres (Salager-Meyer 1994, Hyland 1998), those used tend to be academic in function rather than communicative. -- In order to compare the frequency and variety of the fine-tuning devices used by learners in the two mediums, data was gathered from 39 Thai students of English at Kasetsart University, from (1) their discussions in online bulletin boards and (2) their academic essays. Tasks were assigned on parallel topics in three text types (narrative, explanatory, argumentative) for both mediums. The amount of writing was normalized to create comparable text lengths. Measures used in the quantitative analysis included tallying of the types and tokens of the experimental linguistic items, with the help of the AntConc 2007 computer concordancer. Samples of written texts from the two mediums were also analyzed qualitatively and compared in terms of their discourse structure (stages, moves and speech acts), to see which functional segments support or prompt particular types of pragmatic devices. -- The findings confirm that in electronic bulletin boards the students exercise their repertoires of fine-tuning devices more frequently, and use a greater variety of pragmatic functions than in academic essays. This is probably because online discussion fosters interactions that are more typical of speech (Crystal 2006), and its structure allows for a series of interpersonal moves which have no place in academic tasks. Text-type also emerged as a significant factor: writing argumentative texts prompted greater use of modals and intensifiers than the narrative and explanatory ones. Thus students' communicative competence showed itself most fully in the argumentative online assignments, and was not so evident in academic and expository essays. Frequent use of modal and intensifying elements was also found to correlate with the students' English proficiency grades, and how regularly they wrote online. This incidentally shows the importance of exposure to L2 in language acquisition, and that lower-proficiency learners need more opportunities to exercise their L2 resources in interactive discourse, in order to develop competence in using them. -- These research findings support Long's (1996) 'Interaction Hypothesis', that learners learn best in situations that cater for interaction; and Swain's (1985) 'Output Hypothesis', that learners need the chance to exercise their language naturally in a variety of contexts -through academic tasks as well as social interactions, which are equally important for language education. Extended performance opportunities undoubtedly feed back into the learner's communicative competence.
Mode of access: World Wide Web.
xi, 389 p. ill
7
Cresci, David John. "On-wafer characterization of ground vias in multilayer FR-4 printed circuit boards at RF/microwave frequencies." Thesis, Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/15806.
Full text
8
Sulaiman, Mubarak S. A. "The evaluation of academic electronic bulletin boards for communication and training : HCI factors in the UK and Saudi Arabia." Thesis, Loughborough University, 1994. https://dspace.lboro.ac.uk/2134/22202.
Full textAbstract:
Electronic networks services have become essential tools for the academic community. One of the services provided has been academic electronic bulletin boards (EBBs), and the use of EBBs has increased dramatically during the last decade. One question concerns the possible application of EBBs as a means both for communication and for remote training. A series of experiments were conducted during 1991, 1992, and 1993 with the aim of examining the use of EBBs for these purposes. The first experiment was carried out to investigate whether users experience problems in using EBBs. The next extended this to see how students evaluated EBBs for communication and training purposes. The main focus of the work was BUBL. After this second experiment, modifications were made to the BUBL data and a further experiment was carried out. A different group of students looked at the modified material, and also compared it with US data using different software. The fourth experiment compared the usability of a menu-based interface (dBase III +) and a hypertext interface (HyperCard) from a student's viewpoint. It was followed by an investigation of icons to find out how well different icons could be recognised and the possibility of using them for language-independent instructions. Finally, the characteristics and problems of GULFNET users were examined. The evaluation has demonstrated the general acceptability of EBBs and their likely value for training purposes. This leads to a discussion of how an EBB might best be developed for use in communication and training on GULFNET.
9
Lai, Siu-ming Theresa. "Electronic communication and its contribution to students' writing development a case study of a group of ESL engineering students in Hong Kong /." Click to view the E-thesis via HKUTO, 2001. http://sunzi.lib.hku.hk/hkuto/record/B31944814.
Full text
10
Warren, Douglas J. "A Critical Study of Communications in Land Use Hearings." PDXScholar, 1988. https://pdxscholar.library.pdx.edu/open_access_etds/1349.
Full textAbstract:
This study addresses a major theoretical issue posed in the literature: can alienation in modern urban society be conceptualized in terms of the communicative competence of speakers taking part in social interaction. Specifically, this study explores the relationship between communicative competence and two observable indications of success in land use hearings: 1) ability to influence the final decision of the Variance Committee and 2) expression of feelings of dissatisfaction with the hearings process, as expressed by the participants. On a broader scale, the study tests Jurgen Habermas's classification of speech acts and the notion that public hearings are a free and open process for integrating public opinion into land use decisions. Twenty-five hearings before the Variance Committee of the City of Portland were observed in order to record the types of speech acts used by four different groups in the hearings - the protestors, the applicants, the planning staff and the committee members. Following the hearings the applicant and a protestor were interviewed to ask information about their perceptions of the hearings process. In addition, all the Variance Committee members (15) and twenty-five professional planning staff were interviewed. Altogether 98 interviews were conducted. Analysis of Variance demonstrates that there is a significant difference in the use of the four types of speech acts by the four groups. Tabular analysis shows that the applicants are more comfortable with the hearings process than the protestors. However, both groups are relatively well satisfied with the hearings process, even after controlling for the final decision. Multiple linear regression demonstrates that the decision of the hearing is strongly associated with the speech acts received by the applicants and protestors. Furthermore, a large portion of those acts and their direction can be attributed to the committee Chairman. Based on these two findings (direction of the committee's attention and the Chairman's influence), a case analysis of 14 (out of twenty-five) crucial cases were examined to determine the interactive process used in reaching the final decision. Crucial case analysis revealed that the committee follows an identical ritual review process, led by the Chairman, in all those cases where the final decision corresponds to the staff recommendation. In those cases where the staff recommendation is reversed, the ritual review process is interrupted by one of three types of unexpected errors, committed by the testifiers, which shift the communicative attention of the committee to the opposing testifiers. These findings suggest the hearing process does not provide free and open access to opportunities to influence the decision in Variance hearings. Although some feelings of placation occur on the part of applicants and protestors, the final decisions are heavily predisposed by the professional staff recommendation. This predisposition is not overcome by compelling rational discourse, but only if a "fatal error" is committee by one group of testifiers.
11
Oaks, D'Arcy John. "The effect of coordination and common ground in online discussion a comparison of interactive processes in chat vs electronic bulletin boards /." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1174490042.
Full text
12
Lai, Siu-ming Theresa, and 黎小明. "Electronic communication and its contribution to students' writing development: a case study of a group of ESLengineering students in Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2001. http://hub.hku.hk/bib/B31944814.
Full text
13
Frisk, Irina. "A Linguistic Analysis of Peer-review Critique in Four Modes of Computer-mediated Communication." Doctoral thesis, Mittuniversitetet, Avdelningen för humaniora, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-26741.
Full textAbstract:
Abstract The present work is a quantitative and qualitative analysis of pragmatic strategies for delivering critique, and types of politeness, used by undergraduate L2 students of English at different stages of peer-review discussion. The material examined consists of four corpora of authentic conversations between students, the main purpose of which was to give feedback on each other’s contributions during an English A-level course, at Mid-Sweden University. The conversations explored were carried out electronically, and represent four different online environments, or modes of computer-mediated communication (CMC). The material from the two asynchronous modes of CMC is comprised of L2 students’ written discussion board messages and spoken posts recorded using online software. The two synchronous environments under investigation are text-based and voice-based chat. Taking Brown and Levinson’s (1987) framework of politeness as a point of departure, the present study uses a combination of corpus and conversation analytical methods. The basic unit of analysis has been defined as the shortest message of peer-review critique that constitutes a thematic unit: these have been examined in terms of their content and politeness features associated with them, and analyzed in terms of the pragmatic strategy and type of politeness adopted. The types of pragmatic strategies or message organization patterns at different stages, i.e. initial versus subsequent feedback, of the peer-review discussion have also been analyzed. The results of the study show that the pragmatic strategies aimed at praise and agreement prevail in the corpus data produced by predominantly native speakers of Swedish. Even though the pragmatic strategies used for disagreement and negative evaluation are rich in propositional content, their occurrences and distribution vary across the four modes of CMC examined. These results seem to have wider implications in the context of online L2 learning activities, providing insights about the language of peer-review critique in a Swedish academic setting. Keywords: computer-mediated communication (CMC), Conversation Analysis (CA), conversation management, discussion boards, feedback category, mode of CMC, peer-review discussion, politeness theory, pragmatic strategy, speech act of critique, text-based chat, type of politeness, voice-based chat, VoiceThread
14
El, Raouf Abd Jasmin, and Fredrik Nyqvist. "Debug Board Communication Interface." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-108219.
Full textAbstract:
The Recommended Standard-232 (RS-232) have for decades ruled in the world of computing. Peripherals such as printers have been connected to Personal Computers (PC) via RS-232 it was not only used between PC and peripherals but even for Modems. Now the era of that interface is over and a newer, faster technique has come to light. The Universal Serial Bus (USB). The USB is a Universal Bus indicating that it is able to work on any PC with any Operative System (OS). We have upgraded a debug board that is used for debugging various Device Under Test (DUT). The board now includes USB interface between the PC and board instead of RS-232. Our task is to upgrade drivers for the USB connector, program the components on the board such as the Microcontroller (MCU) so we can transfer data from PC through the debug board and out to the DUTs. When the work is done the board will be able to debug other Ericsson devices by sending different commands from the PC, these commands are sent via the Graphical User Interface (GUI) that we have developed for the debug board. We will also be able to listen and record the data coming from the DUTsI årtionden har RS-232 varit härskande i datorvärlden. Datorutrustning såsom skrivare har kopplats ihop till datorer via RS-232, gränssnittet användes inte bara for anslutning mellan dator och diverse utrustning utan även som koppling till modem. Nu är eran över for RS-232 gränssnittet och en nyare och yngre version har skapats, USB gränssnittet. USB är ett engelskt ord for universal seriell buss och i namnetsa indikerar man att den är just det universal, som kan fungera på alla datorersamt olika OS. Vi har uppgraderat ett felsöknings kort även kallat "debug" på engelska. Kortet anvands för att felsöka olika enheter som används på företaget. Kortet har numera ett USB uttag för att koppla ihop dator till kortet istället for RS-232 gränssnittet. Vi har i uppgift att bl.a. uppgradera drivrutiner för USB uttaget, programmera olika komponenter på kortet såsom MCU för att kunna överfora data från en dator via debugkortet och ut till externa enheter. När jobbet är klart så ska kortet kunna användas för att felsöka andra Ericssonenheter genom att skicka olika kommandon. Detta sker via ett Grafiskt Gränssnitt på datorn som vi har skapat för kortet. Man ska även kunna lyssna och spela in datan som kommer in från dessa externa enheter.
15
Infanger, Valori. "Speaking Out: How Women Create Meaning from the Dove Campaign for Real Beauty." BYU ScholarsArchive, 2009. https://scholarsarchive.byu.edu/etd/1988.
Full textAbstract:
The purpose of this study was to determine whether the Dove Campaign for Real Beauty could be used to effectively expand the media-narrowed definition of beauty. This study focused on the Onslaught video and corresponding message board. The sample included 119 posts written by 85 different message board users. Both a descriptive and interpretive content analysis based on reception analysis was used to deconstruct the message posters' interpretation and construction of individual beauty. The posters used the board primarily to express themselves, attach blame to the media and arrive at consensus. Overall, the users responded positively to the campaign. Twenty themes emerged from the posts, with the most prevalent attaching blame to the media for societal problems. The findings of this study suggest that Dove effectively created an online community where women could find a voice to express themselves and share experiences. More importantly, Dove initiated a public discussion that is a preliminary step in changing social norms. As such, the campaign should be viewed as having been effective.
16
Song, Hamila. "Development of a web site for Korean returning students and their parents to help their process of re-adaptation." CSUSB ScholarWorks, 2005. https://scholarworks.lib.csusb.edu/etd-project/2874.
Full textAbstract:
The purpose of this project was to develop a website to relieve Korean returnees' reverse culture shock and help their re-adaptation process. A website can be an outstanding resource for returnees in terms of accessibility because the target audiences are scattered all over the world.
17
Uddin, Saif. "PLESIOCHRONOUS INTER-BOARD NETWORK-ON-CHIP COMMUNICATION LINK." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-93801.
Full textAbstract:
High speed data communication has brought a monumental change in both the modern human experience and in the pace of technological advancements. Processing and communication of data are closely associated with each other and are accomplished normally through broadly termed processor-based systems. Traditional buses have become a bottleneck in these systems with ever increasing demands in speed and bandwidth. This is due to their inability to scale in parallel with the increasing resources, speed requirements and complexities. Network-on-Chip has offered a sustainable solution to this problem and is aimed to replace the traditional buses. This thesis presents multiple solutions to a multi-board Network-on-Chip Communication System for upgrading the data-rate several times through the links; and for eliminating a persistent breakdown of communication protocol. The thesis builds upon a 4x4 Network-on-Chip having 16 processor-nodes implemented on four interconnected plesiochronous Altera Stratix-II FPGA boards. Although the communication in on-chip network was fast and robust for obvious reasons, the Inter-board communication was incapable of high speed data transfer. It severely limited the performance of the whole Network-on-Chip and marred the advantages that it has over traditional bus-based systems. The thesis utilizes several optimizations and techniques to enable an error-prone wired-link to successfully transfer signals and clock at high speed. It also introduces a fault tolerance technique for accuracy of data transfer through the network and also reduces the logic size of the communication mechanism. It involves multi-pronged approach for the challenges posed by deteriorating clock and signal integrity towards a successful and desirable communication. A test system is also developed to investigate the problems restricting the clock rate, and to test the accuracy of the data transfer. The test system, being balanced in distribution of data, is applied to the original design as well as to the new solutions proposed.
18
Amorosi, Davide. "Analog signal generation with Raspberry Pi boards for short-range communications." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.
Find full textAbstract:
The aim of this thesis is to realise a low-cost wireless application for short range underwater communications, using ultrasonic frequencies. The project can be described in four main steps. The first one is a detailed study of the serial peripheral interface. It has been carried out in order to understand how to physically and logically connect, through SPI, the hardware involved in this work: a Raspberry Pi 3 model B and the MCP4822 digital to analog converter embedded in the ADC-DAC Pi Zero module. The second phase concerns a Simulink model created in order to reduce the complexity of the problem. It has been useful as a guideline for the development of the software. Then, the implementation step includes the full execution of the code, which processes information data and digital samples of a sine wave and converts them in their respective analog signals. Configurable parameters, as the amplitude and the frequency of the sinusoidal carrier, provide more flexibility to the system. The last testing phase consists in several measurements on the hardware to assess the reliability of the system, varying some parameters and comparing these results with the simulations, run on Simulink. The overall performance respects the low-cost nature of the Raspberry Pi: the analog signals exhibit phase noise due to the not perfect periodicity of the SPI clock but they are still reliable and clear enough for project purposes.
19
Crawford, Angela-Janine C. "A Study of Rural Nonprofit Board Communication and Collaboration." ScholarWorks, 2019. https://scholarworks.waldenu.edu/dissertations/7282.
Full textAbstract:
This case study explored the perceptions, experiences, and significant internal communication and collaboration problem(s) faced by a rural nonprofit board of directors experiencing a growth transition. Specifically, this study addressed (a) how a rural nonprofit's board members perceived their communication and collaboration skills and practices, and (b) the training needed to improve board communication and collaboration policies and practices. Ten rural area study participants shared their experiences and made recommendations for board communication and collaboration training. Exploring the perceptions, understandings, and capacities of the rural nonprofit board members revealed how specific communication and collaboration policies and practices affected their organization's success. Using the conceptual framework of board governance, data were collected from participant interviews, which were then analyzed and coded using the eclectic coding method. Four themes related to the board's communication and collaboration practices emerged indicating a need for board restructuring and changes in members passion for and commitment to their mission, communication and collaboration skills, and training activities. This study provides information to the rural board members that may enable them to improve their communication and collaboration policies and practices and offers a plan of action to be taken. The findings of this study might bring about social change by adding to the understanding of approaches to improve rural nonprofit board governance effectiveness.
20
Kim, Gicherl. "Three-dimensionally interconnected optical backplane for high performance board-to-board interconnects /." Full text (PDF) from UMI/Dissertation Abstracts International, 2000. http://wwwlib.umi.com/cr/utexas/fullcit?p3004304.
Full text
21
Chung, Lap Nin. "Applications of on-board processing satellites in mobile communications." Thesis, University of Surrey, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306258.
Full text
22
Jones, Dylan. "On-board communications for the pioneer 3-AT Robot." Thesis, Jones, Dylan (2012) On-board communications for the pioneer 3-AT Robot. Other thesis, Murdoch University, 2012. https://researchrepository.murdoch.edu.au/id/eprint/13120/.
Full textAbstract:
Originally the Pioneer Robot was purchased by Murdoch University with an on-board Linux based personal computer to facilitate teaching Software Engineering. As Murdoch’s Software Engineering program has since been abandoned, the computer has been replaced with microcontrollers to facilitate Industrial Computer Systems Engineering teachings. Given that existing industrial networking protocols often require large memory allocations and significant processing power, this thesis looks at building a protocol to connect these multiple microcontrollers that uses less processing and memory requirements. Another key requirement is the ability to report exceptional events outside routine polling undertaken by the communications master.
The outcome was the development of a new master-slave protocol over an RS-485 physical layer using an New Micros NMIS 5000 board and an Arduino shield built using a National Semiconductors DS75176BN integrated circuit. The protocol was implemented within a prototype system using personal computers connected by Alfatron RS-232 to RS-485 interface converters. State machine program design was used to develop the prototype protocol in the National Instruments Labview environment. Data collision issues were overcome using a scheduling approach to refine the ‘free bus’ idea for exceptional event reporting. Although the final prototype would benefit from further refinement, it is advanced enough to be implemented in a functioning network.
23
Hickey, Deitra Jamra. "Assessing the Opinions of Ohio School Board Members about HIV/AIDS Policy and Curriculum: Developing an Approach to Raise Awareness of HIV/AIDS Related Educational Issues." Connect to full text in OhioLINK ETD Center, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1245269846.
Full textAbstract:
Dissertation (Ed.D.)--University of Toledo, 2009.Typescript. "Submitted as partial fulfillment of the requirements for the Doctor of Education Degree in Educational Administration and Supervision." Bibliography: leaves 92-99.
24
Gorgén, Matilda. "The Designer’s Mixer Board : Communicating Design and Formgiving." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-301861.
Full textAbstract:
This report describes the background, methods and results of a master thesis project revolving around communication and form-giving in the product design process. Teo Enlund, former Associate Professor at KTH, who has developed a tool called the Designer’s Mixer Board, in which he draws a parallel from mixing music to discussing product design. The Designer’s Mixer Board has been used in industrial design centred courses at KTH to investigate brand platforms and ways to maintain brand coherency when introducing new product concepts to an existing brand. The purpose behind this thesis was to investigate how designers and their clients communicate on product design and if the designer’s mixer board can be a useful tool to facilitate and/or deepen the conversation. This covers conversations on formgiving between designers as well as conversations between designers and their clients. Additionally, this thesis aims to provide insights into what communicative methods and tools are used by industrial designers when designing products for a client and how the designers communicate with their clients throughout that process. Different methods and tools were used to investigate the questions posed in the purpose of this thesis, a literature study and an interview study were conducted to gather insight into what tools, methods were being used and previous work had been published in the field of design communication. In addition, a series of workshops were conducted to investigate the designer’s mixer board’s potential as a collaborative communication tool. The literature study and the interview study showed that articulated discussions on formgiving between designers and clients is rare. Designers communicate formgiving fluently amongst themselves due to similar expertise and work methods. However, it is the design outcome that is in focus not articulated discussion. The interviewees did not see the designer’s mixer board as a suitable tool for designer-client interaction but for collaborative work between designers. Based on the findings from the workshops the designer’s mixer board was deemed to have potential as a tool for deepened conversations on design and formgiving. The workshops did however not evaluate designer-client interactions.Denna rapport beskriver arbetet bakom samt resultatet av ett examensarbete som kretsar kring kommunikation och formgivning i produktdesignprocessen. Teo Enlund, tidigare lektor vid KTH, utvecklade i utbildningssyfte ett verktyg som heter designerns mixerbord genom vilket han drar en parallell från att mixa musik till att diskutera produktdesign. Designerns mixerbord har använts i designcentrerade kurser på KTH för att undersöka varumärkesplattformar och designuttryck vid introduktion av nya produktkoncept för befintliga varumärken. Syftet med detta examensarbete var att undersöka hur designers och deras kunder kommunicerar kring produktdesign och om designerns mixerbord kan användas som ett verktyg för att underlätta och/eller fördjupa konversationer om formgivning. Detta inkluderar samtal om formgivning mellan designers såväl som samtal mellan designers och deras kunder. Dessutom syftar detta examensarbete att undersöka vilka kommunikativa metoder och verktyg som används av industridesigners när de utformar produkter för en klient och hur designers kommunicerar internt samt med sina kunder under hela processen. Olika metoder och verktyg användes för att undersöka frågorna i syftet med detta examensarbete. En litteraturstudie och en intervjustudie genomfördes för att ta reda på vilka verktyg och metoder som används och undersöka tidigare utgivna publikationer inom designkommunikation. Dessutom genomfördes en serie workshops för att undersöka designerns mixerbrädes potential som ett gemensamt kommunikationsverktyg. I litteraturstudien och intervjustudien framkom att artikulerade diskussioner om formgivning mellan designers och kunder är sällsynta, medan designers kommunicerar form och design flytande med varandra på grund av liknande expertis och arbetsmetoder. Det är emellertid designresultatet som är i fokus och behovet för artikulerade diskussioner ansågs vara litet. Intervjupersonerna såg inte designerns mixerbräda som ett lämpligt verktyg för interaktion mellan designer och klient, men eventuellt som ett internt verktyg för designers. Baserat på resultaten från workshoparna ansågs designerns mixerbräda ha potential som ett verktyg för fördjupade samtal om design och formgivning. Workshoparna utvärderade emellertid inte interaktioner mellan designer och klienter.
25
Kwan, Ching Chung. "Digital signal processing techniques for on-board processing satellites." Thesis, University of Surrey, 1990. http://epubs.surrey.ac.uk/754893/.
Full textAbstract:
In on-board processing satellite systems in which FDMA/SCPC access schemes are employed. transmultiplexers are required for the frequency demultiplexing of the SCPC signals. Digital techniques for the implementation of the transmultiplexer for such application were examined in this project. The signal processing in the transmultiplexer operations involved many parameters which could be optimized in order to reduce the hardware complexity whilst satisfying the level of performance required of the system. An approach for the assessment of the relationship between the various parameters and the system performance was devised. which allowed hardware requirement of practical system specifications to be estimated. For systems involving signals of different bandwidths a more flexible implementation of the trans multiplexer is required and two computationally efficient methods. the DFT convolution and analysis/synthesis filter bank. were investigated. These methods gave greater flexibility to the input frequency plan of the transmultiplexer. at the expense of increased computational requirements. Filters were then designed to exploit specific properties of the flexible transmultiplexer methods. resulting in considerable improvement in their efficiencies. Hardware implementation of the flexible transmultiplexer was considered and an efficient multi-processor architecture in combination with parallel processing software algorithms for the signal processing operations were designed. Finally. an experimental model of the payload for a land-mobile satellite system proposal. T -SAT. was constructed using general-purpose digital signal processors and the merits of the on-board processing architecture was demonstrated.
26
Chen, Jian. "Polymer waveguide based optical interconnects for high-speed on-board communications." Thesis, University of Cambridge, 2016. https://www.repository.cam.ac.uk/handle/1810/261555.
Full textAbstract:
This dissertation presents a study of multimode polymer waveguide technology for use in board-level communication links for future data centres and supercomputers. The motivation for this work comes from the severe interconnection bandwidth challenges faced by the conventional electrical interconnections technology and the potential performance advantages of optical interconnections. This thesis presents the work to address the bandwidth bottleneck by developing high-bandwidth multimode polymer waveguides. The use of multimode waveguides provides relaxed alignment tolerances enabling low-cost assembly tools. Siloxane polymer materials developed by Dow Corning Corporation are chosen to form the waveguides in this work due to their favourable optical properties (optical losses as low as 0.03 dB/cm and the ability to withstand temperatures in excess of 350 °C) that allow the waveguides to be directly integrated on printed circuits boards (PCBs) using conventional manufacturing processes. Useful design rules for the use of the multimode polymer waveguides are theoretically derived while the bandwidth-length products are investigated under various launch conditions. Frequency-domain measurements and ultra-short pulse measurements are then carried out to investigate the bandwidth performance of the polymer waveguides under different launch conditions and with lateral misalignments. The instrument-limited frequency-domain measurements show that these waveguides exhibit bandwidth-length products (BLPs) of at least 35 GHz×m, while the pulse broadening measurements reveal the actual BLPs to be in excess of 70 GHz×m under a 50 μm multimode-fibre (MMF) launch and 100 GHz×m for a restricted launch across a wide range of input offsets (>±10 μm). This shows the potential for data transmission rates of 100 Gb/s and beyond over a single waveguide channel. A theoretical model is developed using the measured refractive index profile and good agreement with the above experimental results is found. The effects of graded refractive index profiles on the performance of waveguide components (bends, crossings) are also investigated, demonstrating that appropriate refractive index engineering can provide enhanced waveguide loss performance while exhibiting adequate bandwidth. Waveguide bends with excess loss below 1 dB for a radius >6 mm, crossings with loss less than 0.02 dB/crossing while exhibiting adequate link bandwidth (>47 GHz×m) can be achieved for a MMF launch. On this basis, advanced modulation formats are investigated across the board-level waveguide links for further increasing the on-board data rates. Record NRZ-based 40 Gb/s and 56 Gb/s PAM-4 based data transmission over a 1 m long multimode polymer spiral waveguide are theoretically and experimentally demonstrated.
27
Pelosi, Anna M. "Intercultural communication in the refugee determination hearing." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=27480.
Full textAbstract:
Through interviews, observation of refugee hearings, the analysis of negative decisions rendered by the Immigration and Refugee Board (IRB), and the application of communication, and social work theories, as well as discourse analysis, this study explores the effects of intercultural communication on the outcome of the refugee determination hearing. It is argued that a gap exists between the principle of cultural receptiveness at the IRB, and that which occurs in the hearing. This paradox is testimony to the difficulties of applying the international definition of a Convention Refugee to a socially and culturally-constructed refugee determination process. The political, social, and cultural context in which the IRB functions, the Board's institutional culture, which mirrors the social discourse on refugees, and the way individuals ascribe meaning to information in a culturally-defined manner, all have an impact on the outcome of the hearing, and in turn on refugee protection in Canada.
28
Cinarelli, Davide <1983>. "Innovative architecture of on-board and on-ground radio systems for space communication." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amsdottorato.unibo.it/4820/.
Full textAbstract:
The radio communication system is one of the most critical system of the overall satellite platform: it often represents the only way of communication, between a spacecraft and the Ground Segment or among a constellation of satellites.
This thesis focuses on specific innovative architectures for on-board and on-ground radio systems. In particular, this work is an integral part of a space program started in 2004 at the University of Bologna, Forlì campus, which led to the completion of the microsatellite ALMASat-1, successfully launched on-board the VEGA maiden flight. The success of this program led to the development of a second microsatellite, named ALMASat-EO, a three-axis stabilized microsatellite able to capture images of the Earth surface. Therefore, the first objective of this study was focused on the investigation of an innovative, efficient and low cost architecture for on-board radio communication systems. The TT&C system and the high data rate transmitter for images downlink design and realization are thoroughly described in this work, together with the development of the embedded hardware and the adopted antenna systems. Moreover, considering the increasing interest in the development of constellations of microsatellite, in particular those flying in close formations, a careful analysis has been carried out for the development of innovative communication protocols for inter-satellite links.
Furthermore, in order to investigate the system aspects of space communications, a study has been carried out at ESOC having as objective the design, implementation and test of two experimental devices for the enhancement of the ESA GS. Thus, a significant portion of this thesis is dedicated to the description of the results of a method for improving the phase stability of GS radio frequency equipments by means of real-time phase compensation and a new way to perform two antennas arraying tracking using already existing ESA tracking stations facilities.
29
Yim, Wan Hung. "All-digital multicarrier demodulators for on-board processing satellites in mobile communication systems." Thesis, University of Surrey, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.290415.
Full text
30
McGarry, Donald L. "The Electronic Bulletin Board as a Means of Professional Communication Among Physics Teachers." NSUWorks, 1994. http://nsuworks.nova.edu/gscis_etd/716.
Full textAbstract:
Teachers of secondary school physics are often physically isolated from their peers; that is, they do not have as much contact with their physics colleagues as they desire. One reason for this physical isolation is the relatively small population of students enrolled in high school physics courses resulting in small numbers of physics teachers per school. Another is that many physics teachers are teaching physics only part time.
One method of communication among teachers has the potential to improve professional communication among physics teachers. This is the computer operated electronic bulletin board system (BBS). Bulletin board systems and variants have been studied for more than ten years. At least one is being operated primarily for physics teachers.
This study was designed to determine the effectiveness of a BBS as a means of professional communication among physics teachers. Effectiveness was determined by surveying physics teachers in three categories: (1) those who are using a BBS to communicate, (2) those who are members of a physics teachers association, and (3) those who have neither of these formal means of communication available to them. School data (population, graduation requirements, number of physics classes and teachers, etc.) and personal data (years teaching physics, teaching assignment, certification, professional affiliations, etc.) were gathered from all three groups. The experimental group using the BBS was asked to supply additional information about the use of the BBS itself.
Data were gathered using a questionnaire. The BBS users were compared to the other groups to determine whether they are representative of the physics teacher population and whether their desires for additional professional communication are similar to that of the physics teacher population. Survey responses by BBS users about the BBS itself were then used to determine the effectiveness of the BBS as a means of professional communication. Statistically significant differences among the three groups were found and are discussed. Comparisons were also made between the three groups and the population of physics teachers in the United States as presented in an American Institute of Physics report. Of greatest importance, differences exist among the three groups when tested for professional contact with physics colleagues. No differences were found among the three groups when desire for additional professional contact was tested. Survey results for the group of BBS users showed that they were experienced computer users who expressed no unusual difficulties with the mechanics of connecting to the BBS. Many did express difficulties with the BBS as a means of professional communication.
Two important problems discussed are difficulty in using all system options and the small number of active participants using the BBS. BBS users expressed confidence in the system's potential as a professional communications system, but were less enthusiastic about it had served their needs. Overall, the problems experienced by BBS users were not offset sufficiently by the benefits to make the system as effective a means of professional communication as it could be. The potential of the electronic bulletin board system as a means of communication among physics teachers did not live up to its perceived potential for the group of users studied.
31
Nieweglowski, Krzysztof, Tobias Tiedje, David Schöniger, Ronny Henker, Frank Ellinger, and Karlheinz Bock. "Electro-optical integration for VCSEL-based board-level optical chip-to-chip communication." SPIE, 2017. https://tud.qucosa.de/id/qucosa%3A35150.
Full textAbstract:
This paper discusses the technology development for integration of parallel optical interconnects on board-level, including the active and passive optical components as well as the electrical integrated circuitry. The inter-chip link is based on planar polymeric optical multimode waveguides with integrated out-of-plane coupling optics and optical transceiver subassemblies based on glass interposer. Integration of polymeric waveguides on flexible substrates will be shown since the realization of an overlay optical substrate enhances the yield and testability of the final hybrid electrooptical printed circuit board (EOPCB). Realized on-board waveguides feature low insertion loss (minimum attenuation coefficient of below 0.1 dB/cm). For short planar waveguides (Lwaveguide = 9 cm) error free transmission (BER < 10-12) up to 30 Gbit/s was achieved. The development of glass interposer passive optical coupling structures for VCSEL-based short-distance links will be described.
32
Dong, Lihua. "Design of a PCI communication system between an FPGA board and a PC /." Diss., Digital Dissertations Database. Restricted to UC campuses, 2004. http://uclibs.org/PID/11984.
Full text
33
Bansal, Mayur. "DIGITAL CONTROL BOARD FOR PHASED ARRAY ANTENNA BEAM STEERING IN ADAPTIVE COMMUNICATION APPLICATIONS." DigitalCommons@CalPoly, 2013. https://digitalcommons.calpoly.edu/theses/1113.
Full textAbstract:
The application of adaptive communication techniques for mobile communications has attracted considerable interest in the last decade. One example of these techniques is spatial filtering through planar antenna array beam forming.
This thesis describes the development of a digital system that adaptively controls a phased array antenna. The radiating structure of the phased antenna array is tetrahedral-shaped and contains four antenna elements on each of its three faces. The overall system comprises of a digital control board with an external computer interface, an RF control board, and the phased antenna array. The RF controls the main lobe direction on the phased array antenna. This thesis describes the design and implementation of the digital control board.
The digital control board`s primary responsibilities are implementing inter- faces between the external computer and the RF board, which results in two operational modes: the MATLAB graphical user interface (GUI) mode and the adaptive receive mode. The GUI mode allows users to input parameters that provide interactive control of the phased antenna array by interfacing with an external computer and the RF control board. The adaptive receive mode im- plements an algorithm for an adaptive receive station. This algorithm uses a 58-point scanning technique that locates the maximum receive power direction.
Test results show that the digital control board successfully manages the RF board control voltage with an nominal error of less than 1%, which subsequently allows for precise control of the antenna`s active face. Additionally, testing of the GUI demonstrated the successful interactive application of various system control parameters.
34
Bui, Tien Hy. "Performance evaluation of multimedia satellite communications systems using on-board packet switches." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0014/MQ39978.pdf.
Full text
35
Clavio, Galen. "Uses and gratifications of Internet collegiate sport message board users." [Bloomington, Ind.] : Indiana University, 2008. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3319833.
Full textAbstract:
Thesis (Ph.D.)--Indiana University, School of Health, Physical Education and Recreation, 2008.Title from home page (viewed on May 13, 2009). Source: Dissertation Abstracts International, Volume: 69-08, Section: A, page: 2922. Adviser: Paul M. Pedersen.
36
Lahti, Carl Andrew. "The design of the radio frequency (RF) subsystem printed circuit boards for the Petite Amateur Navy Satellite (PANSAT)." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1997. http://handle.dtic.mil/100.2/ADA333403.
Full textAbstract:
Thesis (M.S. in Electrical Engineering and Electrical Engineer) Naval Postgraduate School, June 1997.Thesis advisors, Randy L. Borchardt, Rudlof Panholzer. Includes bibliographical references (p. 99). Also available online.
37
Barnard, Michael T. "Data Transfer System for Host Computer and FPGA Communication." University of Dayton / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1448287709.
Full text
38
Ahmad, Jamil. "All digital OQPSK demodulation for an on-board processing multicarrier demodulator." Thesis, University of Surrey, 1992. http://epubs.surrey.ac.uk/843678/.
Full textAbstract:
New payload concepts of low cost earth stations for future mobile satellite communications can only be realised by using dedicated on-board processing satellites. The satellite uplink and downlink are optimised by the use of FDMA/SCPC for uplink and TDM on the down link. This scheme allows mobile transmitters to transmit a narrow band, low power signal, resulting in smaller dishes and HPAs with lower output power. On the uplink, there are hundreds of FDM channels to be demodulated on-board. The most promising approach is the use of all-digital multicarrier demodulators (MCDs), where analogue and digital hardware are efficiently shared amongst the channels and digital signal processing is used at an early stage to take advantage of VLSI technology. A MCD consists of a channeliser for separation of FDM channels followed by individual demodulators for each channel. The major research areas in MCD's are efficient implementation of channelisers and the optimal demodulation algorithms for the demodulator. This thesis is focused on the demodulator part of an MCD using OQPSK modulation which haye received attention recently due to its spectral advantages in non-linear mobile satellite channels. Most of the research carried out on the OQPSK modulation has been addressed to its spectral performance under satellite channel non-linearities, but little attention has been paid to efficient receiver designs. The most important requirements of the demodulator in a mobile environment is fast acquisition with minimum overhead. This over-head includes long preambles in data frames to aid the acquisition of the carrier and the symbol timing recovery loops. In this thesis, research on preambleless all-digital demodulators for OQPSK has been carried out. The performance of the most suitable OQPSK synchronisation algorithms have been evaluated using extensive computer simulations. These algorithms have been selected after a comprehensive survey of digital synchronisation techniques. It is shown how these algorithms are related to the maximum likelihood (ML) principle and these algorithms are classified according to their technique of parameter extraction from the likelihood function. The synchronisation problems associated with OQPSK are pointed out with possible solutions. On the basis of the performance results of individual synchronisers, various demodulation algorithms for OQPSK have been developed for fixed, mobile and deep space applications. The DSP implementation of the all- digital OQPSK demodulator developed for the MCD for mobile applications is described in detail and its performance compared with simulation results.
39
Wong, Chun Wai. "Device technology and baseband switch for the advanced on-board processing satellites." Thesis, University of Surrey, 1988. http://epubs.surrey.ac.uk/843454/.
Full textAbstract:
This thesis examines a new market for satellite communication serving small fixed-station business systems. This market requires transmission between a large number of smaller and cheaper earth terminals. The traffic requirements for satellite business services in Europe by the year 2000 have been reviewed. An advanced regenerative on-board processing business satellite with 13 spot-beams for the European coverage was then proposed to meet the expected traffic growth. This satellite system is designed to meet the needs of the user rather than, as traditionally, the user fitting in with the satellite. SCPC/FDMA and R-TDMA (reservation-TDMA) multiple access schemes were found to be most suitable for the proposed system serving many small users whose traffic was mixed voice, data and video. The architecture of the satellite payload has been studied and two main functional blocks, transmultiplexer and baseband switch were identified. The use of the transmultiplexer is to transform the EDM channels into TDM and the baseband switch is to provide full connectivity between all the stations so that the revolutionary idea of having a "switchboard in the sky" can be realised. The development work for the baseband switch is reported in detail in this thesis together with a comparison of different architectures for the baseband switch. A proof-of-concept model for the baseband switch was designed, built and tested. From the test results, the feasibility of implementing the baseband switch using the chosen architecture was proved. Another main area studied in this thesis was device technology. The present and future capability of bipolar, CMOS and GaAs technology has been investigated concentrating mainly on digital devices and semi-custom technology. Since the satellite is operating in an hostile environment, it has been necessary to study the effects of radiation on semiconductor devices. The outcome of these studies indicate that it is very promising to launch such advanced satellite payloads in the late 1990's.
40
Baig, Adeel Computer Science & Engineering Faculty of Engineering UNSW. "Improving throughput and fairness of on-board mobile networks." Awarded by:University of New South Wales. School of Computer Science & Engineering, 2007. http://handle.unsw.edu.au/1959.4/28247.
Full textAbstract:
The Internet Engineering Task Force (IETF) has recently released network mobility standards that allow deployment of TCP/IP networks onboard a vehicle and maintain permanent network connectivity to the Internet via a vehicular mobile router. This recent development opens up new opportunities for providing efficient mobile computing for users on the move, especially for commuters traveling on public transports. Moreover, central and coordinated management of mobility in a single router, rather than by each user device individually, has numerous advantages. In this architecture, however, it becomes challenging to guarantee network performance due to the mobility of the network and inherently vulnerable nature of wireless links. In this thesis, a detailed performance study of onboard networks is conducted. It has been shown that disruptions in the mobile router connectivity can significantly degrade network throughput. Moreover, factors such as the limited wireless bandwidth of the access link, variations in the bandwidth due to technology switching, and the communication diversity of onboard users all contribute to the problem of unfair sharing of wireless bandwidth. By leveraging the fact that all onboard communications go through the mobile router, performance enhancing solutions are proposed that can be deployed in the mobile router to transparently address the throughput and fairness problems. In this architecture, when the route is known in advance and repetitive (e.g. for public transport or a regularly commuting private vehicle), a certain degree of prediction of impending link disruptions is possible. An anticipatory state freezing mechanism is proposed that relies on the prediction of link disruptions to freeze and unfreeze the state machine of TCP, the widely used transport protocol in the Internet. Simulation study shows that TCP throughput has a non-linear relationship with the prediction accuracy. As prediction accuracy increases, throughput problem diminishes quickly. An adaptive mobile router based fairness control mechanism is proposed to address the unfair sharing of wireless bandwidth in highly dynamic scenarios. The fairness is controlled by dynamically estimating the round-trip-times of all onboard TCP connections and transparently adjusting the protocol control parameters at the router. The thesis also discusses implementation issues for the proposed solutions.
41
Barberi, Pamela M. "Reducing the Surgical Patient's Family Member's Anxiety Using an Electronic Patient Tracking Board." ScholarWorks, 2015. https://scholarworks.waldenu.edu/dissertations/1876.
Full textAbstract:
Family members of surgical patients experience anxiety due to lack of consistent communication during the surgical process. Attending to the needs of the surgical patient's family members is an important factor easily forgotten in a busy clinical arena. The purpose of this project was to decrease the surgical patient's family member's anxiety by providing family members with timely and consistent information regarding the patient's progress through surgery. The theoretical foundation used was general systems theory showing that a change in one part of a system leads to change in the whole system with the use of improved communication and feedback. The key question asked was whether an electronic information system could provide additional information in conjunction with personal interaction to reduce the family member's anxiety. The project design was a prospective, randomized, posttest design in a single-center study using the State-Trait Anxiety Inventory Survey for Adults (STAI). The sample size was 80 surgical patients' family members. Results using the Wilcoxon-Rank-Sum test indicated that the addition of an electronic information display was unable to reduce STAI scores. The medians for the State portion of the survey were .823 across all categories for both the control and intervention groups. The medians for the Trait portion of the survey for both the control and intervention groups were .118 with p >05. Although the data suggests retaining the null hypothesis, a significant social change was the staff's heightened awareness of the surgical patient's family's vulnerability and the need for communication during the perioperative phase.
42
Danesfahani, Gholam Reza. "A study in optimising a multicarrier demultiplexer demodulator (MCDD) for on-board processing (OBP) satellites." Thesis, University of Surrey, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309262.
Full text
43
Cretin, Sébastien. "La transmission des savoirs du skateboard à l'épreuve des nouvelles technologies et l'information et de la communication." Besançon, 2007. http://www.theses.fr/2007BESA1019.
Full textAbstract:
Notre étude sur la transmission des savoirs du skateboard révèle la place des échanges de proximité entre les skateurs au regard des messages hérités des médias. L’interaction locale entre ceux qui savent et ceux qui désirent apprendre, et notamment entre les experts et les débutants, sur des espaces dédiés ou réappropriés, doit cohabiter avec ces savoirs planétaires que les médias diffusent. Ce « cosmopolitisme banal » vécu à différents niveaux et intensité selon les skateurs, exprime le caractère surmoderne de ces pratiques, et invite à dépasser le « nationalisme méthodologique », par l’étude approfondie des NTIC et de leurs usages. Ainsi, notre méthodologie basée sur des techniques polymorphes (entretiens semi directifs, entretiens de skateurs commentant des vidéos, études ethnographiques, analyses de vidéos, sites Internet, magazines spécialisés) met en exergue chez les skateurs de Besançon et de Thise une dualité d’apprentissage. Ceux-ci profitent d’une part, des interactions au niveau local en s’organisant socialement en binôme, en groupe ; et d’autre part, utilisent les différents didacticiels présents sur les magazines, vidéos et sites Internet de skateboard, ou détournent de leur usage premier ces supports pour acquérir des techniques, valeurs et références culturelles. Ces pratiques rendues possibles par l’usage des nouvelles technologies nous mettent face à un paradoxe : afin d’obtenir les techniques et valeurs afférentes au skateboard, et notamment l’esprit rebelle, qui est encore à ce jour le « principe supérieur commun » de cette activité, les skateurs entrent dans un conformisme relatif en adoptant une démarche consumériste par l’utilisation des NTICOur study concerning the transmission of skateboard knowledge reveals the role of close contacts between skaters as concerns messages received from the media. Local interaction between those who know and those who want to learn, notably between experts and beginners in places that are designed for that purpose or that are used in that way, must co-exist with the planetary messages that are broadcast by the media. This “ordinary cosmopolitism” is experienced at various levels and intensities by different skaters and expresses the “neo-modern” character of such practices; it represents an invitation to go beyond “methodological nationalism” through an in-depth study of new information and communication technologies and their uses. Our methodology is thus founded on polymorphic techniques (semi-directed interviews, interviews with skaters commenting on videos, ethnographic studies, video analysis, Internet sites, specialized magazines) and brings to light a dual learning process for skaters in Besançon and Thise: firstly, these skaters take advantage of local interactions and organize themselves in pairs or groups; secondly, they use various educational software programmes available in skateboard magazines, videos and Internet sites; or modify such media for their own use in the acquisition of techniques and values associated with skateboarding. This is notably true as concerns the rebel spirit, which is today the “shared superior principle” of this activity: skaters thus act in relative conformity through the adoption of a consumerist approach through their use of new information and communication technologies
44
Qureshi, Bilal Ahmad. "The effect of online discussion board communications on Korean university EFL learners' writing development." Thesis, Queen's University Belfast, 2017. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.728399.
Full textAbstract:
This study specifically examines Korean EFL writing learners’ attitude towards the use of online discussion boards for their writing development. The secondary purpose of this study is to validate the existing studies conducted on the usefulness of information technologies for EFL classrooms in general and EFL writing classes in particular. The effectiveness of online discussion board communication for Korean EFL learners' writing development is also examined. Data collected from students' pre- and post module questionnaire (n-203), their essay writing samples for analyzing their writing development, and interview. The data analysis result indicated that there is a positive relationship between students' writing skills improvement and online discussion boards. A mixed method approach was applied with survey, text analysis, and interview used for triangulation. The study was conducted over a period of one academic semester (15 weeks). A positive perception towards the use of online discussion boards for their writing courses was noted. Following the findings given above, a few recommendations are made; (a) An online interface (e.g. online discussion board) might be introduced as an essential component of all EFL classes which could benefit learners not only to provide pedagogical support through feedback to their peers but also they can form a social community for interacting with each other in or outside of the classroom, (b) As most EFL learner have access to some sort of digital device (e.g. smartphone, tablet PC, computers, etc); they might not be considered as a distractor for their learning rather they can be used as a potential resource to enhance their learning by utilizing these devices for exploiting, connecting, and interacting with the members of EFL community, (c) Teachers might encourage learners to participate more in online discussion board communication in order to promote communicative language teaching (CLT)
45
Hoare, Jonathan Giles. "Imperialism & 'alternative' film culture : the Empire Marketing Board film unit : 1926-1933." Thesis, Kingston University, 2010. http://eprints.kingston.ac.uk/21827/.
Full textAbstract:
This thesis explores the early years of the British documentary movement as it formed within the Empire Marketing Board between 1926 and 1933. I begin by offering new insights into this formation by focusing on key institutions that have been under-researched in existing literature. The movement started with government money and resources, in a position formalised by the EMB's use of the Imperial Institute, a Victorian institution with an established history of public education, exhibition and research. Within this official institutional framework the EMB's filmmakers enjoyed an extraordinary level of creative freedom. They were simultaneously embedded within the'alternative' film culture that had developed from the independent screenings of the London Film Society (1925-1939). The Society offered coverage of the art and history of film for the first time in Britain, alongside showcasing a wealth of contemporaneous experimental and avant-Barde fiction and non-fiction work. Drawing on a variety of primary archival sources (some of which have not been previously explored) in the first three chapters I examine how the EMB's film unit developed in a relationship between the Board, the Imperial Institute and the Film Society. This position defined the work they produced, and the style and the content of their films for the EMB. The filmmakers were part of an Imperial discourse that aimed to promote Britain and the British Empire, however they were also engaging with, and contributing to, an international movement of filmmakers and intellectuals who were using documentary film to look closely at contemporary society from new perspectives. The fourth and fifth chapters offer fresh insights into filmmaking at the EMB, with a personal study based on new research into the life and work of Basil Wright. Although he was a central figure at the EMB, his role has remained under-researched. The material I present here offers a new account of the early formation of the documentary movement at the EMB and the original resources that the Board and its filmmakers drew upon.
46
Johansson, Lina. "Interaktionen mellan lärare och elever med smart-board som medierande artefakt : En kvalitativ studie om lärandet vid problemlösningssituationer i matematik." Thesis, Högskolan i Skövde, Institutionen för kommunikation och information, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-8300.
Full textAbstract:
Skolans styrdokument ställer krav på att lärare och elever ska använda digitala medier i undervisningen och digital kompetens ses som en nyckelkomponent för ett livslångt lärande. Syftet är att analysera interaktionen mellan lärare och elever under problemlösningssituationer i matematikundervisningen med smart-board som medierande artefakt. Studien har ett sociokulturellt perspektiv. Empirin är insamlad genom video-observationer och studien är öppen och kvalitativ. Empirin består av fyra filmade och transkriberade sekvenser som innefattar fyra olika elever och hur de arbetar med problemlösning med smart-boarden som medierande artefakt. Empirin är analyserad utifrån EMA-modellen, som bygger på idéer från John Deweys pragmatiska filosofi. Resultatet visar att interaktionen styrs av läraren eftersom att det är läraren som styr över talutrymmet, men även vilka elever som ska vara delaktiga i interaktionen. Interaktionens fokus är ett sökande efter rätt svar. Det lärande som möjliggörs i de filmade situationerna är att finna lämpliga strategier för att lösa problemet.The school's governing documents require teachers and students to use digital media in education and digital literacy is seen as a key component of lifelong learning. The aim is to analyze the interaction between teachers and students in problem-solving situations in mathematics education with smart-board as mediating artifact. The study has a socio-cultural perspective. The empirical data is collected through video observation and the study is open and qualitative. The empirical data consists of four filmed and transcribed sequences involving four different students and how they work with problem solving with smart-board as a mediating artifact. The empirical data is analyzed by the EMA model, based on the ideas of John Dewey's pragmatic philosophy. The result shows that the interaction is controlled by the teacher because the teacher has control over the linguistic space, but he also choose which students who are getting involved in the interaction. Interaction focus is the search for the right answer. The learning that is made possible in filming situations is to find appropriate strategies to solve the problem
47
Björklund, Filip, and Niklas Landin. "Board and Chip Diversity in Deep Learning Side-Channel Attacks : On ATtiny85 Implementations Featuring Encryption and Communication." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-300766.
Full textAbstract:
Hardware security is an increasingly relevant topic because more and more systems and products are equipped with embedded microcontrollers. One type of threat against hardware security is attacks against encryption implementations in embedded hardware. The purpose of such attacks might be to extract the secret encryption key used to encrypt secret information that is being processed in the hardware. One type of such an attack that has gained more attention lately is side-channel attacks using deep learning algorithms. These attacks exploit the information that leaks from a chip in the form of the power the chip is consuming during encryption. In order to execute a side-channel attack assisted by deep learning, large amounts of data are needed for the neural network to train on. The data typically consists of several hundreds of thousands of power traces that have been captured from the profiling device. When the network has finished training, only a few power traces are required from a similar device to extract the key byte that has been used during encryption. In this project, the 8-bit microcontroller ATtiny85 was used as the victim device. AES-ECB 128 was used as the encryption algorithm. The goal of the project was to test how differences between boards and ATtiny85 chips affect the performance of side-channel attacks with deep learning. In the experiments, six different boards were used, where three of them had identical designs, and three of the boards had different designs. The data gathering was performed by measuring power consumption with an oscilloscope connected to a PC. The results showed that the similarity between the boards that were used for profiling and the boards that were attacked was the most important aspect for the attack to succeed with as few power traces as possible. If the board that was attacked was represented as a part of the training dataset, improved attack performance could be observed. If the training used data from several identical boards, no obvious improvement in attack performance could be seen. The results also showed that there are noticeable differences between identical ATtiny85 chips. These differences were obvious because the best attacks were the ones where the attacked chip was part of the training data set. There are several directions for future work, including how feasible these attacks are in real life scenarios and how to create efficient countermeasures.Hårdvarusäkerhet blir mer aktuellt allt eftersom fler och fler system och produkter utrustas med mikrokontrollers. En typ av hot mot hårdvarusäkerhet är attacker mot krypteringsimplementationer i inbyggd hårdvara. Sådana attacker kan ha som syfte att försöka ta fram den krypteringsnyckel som används för att kryptera hemlig information som hanteras i hårdvaran. En sådan typ av attack, som undersökts mycket under senare år, är sidokanalsattacker där djupinlärningsalgoritmer används. Dessa attacker utnyttjar den information som läcker från ett chip genom den ström som chippet förbrukar. För att kunna utföra en sidokanalsattack med hjälp av djupinlärning krävs stora mängder data för att träna det neurala nätverket som utgör djupinlärningen. Datan består vanligtvis av flera hundra tusen strömförbrukningsspår tagna från chippet som är tänkt att attackeras. Denna data märks upp med vilken nyckel och text som använts vid krypteringen, eftersom metoden som används är övervakad inlärning. När nätverket är färdigtränat krävs bara ett fåtal strömförbrukningsspår från ett liknande chip för att ta reda på vilken nyckel som används i krypteringen. I detta projekt användes ATtiny85, en 8-bitars mikrokontroller, som det utsatta chippet för attacken. 128 bitars AES-ECB användes som krypteringsalgoritm. Målet med projektet var att testa hur olikheter mellan olika kretskort och olika identiska ATtiny85-chip påverkar resultaten av sidokanalsattacker med djupinlärning. I testerna användes sex olika kretskort, där tre stycken var likadana varandra, och tre stycken var olika varandra. Datainsamlingen skedde genom att mäta strömförbrukningen med ett oscilloskop kopplat till en dator. Resultaten visade att likheten mellan de kretskort som användes för att samla in data och kretskortet som attackeras är den viktigaste faktorn för att attacken ska lyckas med hjälp av så få insamlade strömförbrukningsspår som möjligt. Om det kretskort som attackeras är representerat som en del av träningsdatamängden ses också förbättrade effekter i attackresultaten. Om träningen sker på flera identiska kretskort kunde ingen tydlig förbättring av attackerna observeras. Resultaten visade också att det finns skillnader mellan olika identiska ATtiny85-chip. Dessa skillnader visar sig i att en attack lyckas bäst om det attackerade chippet ingick i träningsdatamängden. Framtida studier kan bland annat undersöka hur effektiva dessa attacker är i en realistisk miljö samt om det är möjligt att skapa effektiva motåtgärder.
48
Stojanac, Sanja, Helena Nguyen, and Daniella Baubec. "Women on the Corporate Board in Sweden." Thesis, Jönköping University, JIBS, Business Administration, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-13077.
Full textAbstract:
Women are often predominated in so-called "women´s jobs" including nursing, teaching and administration while jobs such as manager, board of director and financier are dominated by men. Hence, the corporate board has been male-dominated. However, in recent decades the number of women entering the boardroom has increased. Women are aware of their opportunites in terms of managerial jobs. Nevertheless, Sweden has one of the highest levels of gender equality in the world. Women with business experience and education are steadily moving upp the corporate ladder. The importance of female directors´ contributions on the corporate board has been recognized. The purpose of this thesis is to investigate how women contribute on the corporate board in Sweden. The focus of the study lies on the perspectives of female and male directors. The study was conducted with the use of a qualitative method. It provided us with an understanding of the subject based on respondents´ experience. In order tol fulfill the purpose, eight semi-structured interviews were conducted with male and female directors on the corporate board in Sweden. The empirical data was analyzed by the process of qualitative data analysis (QDA). We have increased the knowledge of female directors´ contributions on the corporate board in Sweden. Female directors do not posses a profound understanding of female customers. There is a strong link between female representatives and enhanced board communication. Furthermore, there is no relation between female directors and companies´ involvement in charitable activities. There is no difference in the way female and male directors monitor the board.
49
Lohmeyer, Whitney Quinne. "Space radiation environment impacts on high power amplifiers and solar cells on-board geostationary communications satellites." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/98682.
Full textAbstract:
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, 2015.Cataloged from PDF version of thesis.
Includes bibliographical references (pages 273-292).
Communications satellite operators maintain archives of component telemetry to monitor system function. Operators generally do not typically use the telemetry data for scientific analysis of the space radiation environment effects on component anomalies or performance. We partnered with four geostationary (GEO) operators, acquired >1 million hours of telemetry, and combined these data with space weather observations to investigate relationships between space weather and hardware performance. We focused on the effects of space weather on two component types: solar cells and high power amplifiers. For solar cells, by augmenting >20 years of GEO telemetry with separate GEO space weather measurements, we calculated both on-orbit degradation of Si and GaAs solar cells in an annual average sense, and also quantified the degradation of cells during severe solar proton events (SPEs) of 10 MeV protons > 10,000 pfu. A functional relationship between the amount of degradation and proton fluence is also considered. We used the calculated degradation to evaluate several combinations of space weather environment models with solar cell degradation models and found that predicted performance is within 1% of the observed degradation. These models had not previously been validated using multiple on-orbit GEO datasets. We did not find a model pairing that consistently outperformed the others over all of the datasets. For high power amplifiers, through the use of statistical analysis, simulations, and electron beam experiments we conducted a root-cause analysis of solid state power amplifier (SSPA) anomalies on-board eight GEO satellites. From the statistical analysis, we identified that the occurrence of anomalies was not random with respect to the space weather environment, but that there appeared to be a relationship to high-energy electron fluence for periods of time between 10 - 21 days before the anomalies. From the simulations and electron beam lab tests, we demonstrated that internal charging occurs in the amplifier chain, potentially identifying a cause for the observed anomalies. We substantiated an approach toward understanding space weather effects on space components by obtaining and using long-duration archives of standard commercial telemetry for scientific analysis. The analysis of large telemetry data sets of similar components over long periods of time improves our ability to assess the role of different types of space weather events in causing anomalies and helps to validate models. The findings in this work that relate deep dielectric charging to component anomalies and solar proton events to solar cell degradation make use of only a small fraction of the potentially available commercial geostationary satellite telemetry. Expansion of this work would provide additional insights on the role of space weather to the science community and to the satellite design and operator community.
by Whitney Quinne Lohmeyer.
Ph. D.
50
Hsu, Carolyn P. "Interactions between physical and virtual space : the influence of game environments on graphic design problem solving /." Online version of thesis, 2007. http://hdl.handle.net/1850/4843.
Full text