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Littérature scientifique sur le sujet « Analysis of conversations (AC) »

Auteur : Grafiati

Publié le 10 mars 2023

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Articles de revues sur le sujet "Analysis of conversations (AC)"

Suamuang, Wuttiporn, Surachai Suksakulchai et Elizabeth Murphy. « Factors affecting assignment completion in higher education ». Journal of Applied Research in Higher Education 12, n^o 5 (23 mars 2020) : 1251–64. http://dx.doi.org/10.1108/jarhe-12-2019-0309.

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PurposeThe purpose of this paper is to simultaneously investigate a variety of factors related to assignment completion (AC) (i.e. task orientation, cooperation, teacher feedback, time management and time spent on AC).Design/methodology/approachThe study relied on a self-report survey to assess students' perceptions in relation to six variables. Participants included 1,106 undergraduate students from six public Thai universities. Analysis involved structural equation modeling.FindingsThis study provided new results related to task orientation as the strongest predictor of AC and time management. Cooperation and feedback improved AC with time management as an intervening variable. Time management and feedback did not predict time spent on AC.Research limitations/implicationsFuture studies might explore the potential range of assignments that, for example, count for a higher portion of the grade versus those that are less or unimportant in terms of the course. Future studies might also look at the role of group assignments in relation to completion. Semi-structured interviews or observations might provide insights into how students manage their time and why task orientation has the most effect on AC. Future research might investigate more specifically at what point time management does or does not affect completion. In general, given the growth of online learning and contexts in which students may be increasingly called on to complete assignments independently, factors such as those investigated in this study will require more attention in varying countries and contexts, generically and for individual subjects.Practical implicationsInstructional designers and instructors can promote task orientation through reliance on strategic scaffolding. For designing a task-oriented environment, instructors need to offer challenging assignments. Instructors should also assign work that encourages motivation, effort and achievement. To ensure that cooperative learning positively affects time management, instructors and designers can allot specific in-class time for completion of tasks, reliance on flipped classroom activities and student conversations regarding time restrictions and time-management skills. Instructors can be supported to help them provide appropriate types of feedback, as well as ideas for implementing the feedback in practice.Originality/valueLittle research has been conducted on AC in higher education. Those studies that have been conducted have focused on the elementary and secondary levels. Furthermore, studies have not always taken into account the complex relationships between different factors that can potentially influence AC.

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Whitworth, Anne. « Application of Conversation Analysis (CA) to the Management of Aphasia ». Travaux neuchâtelois de linguistique, n^o 38-39 (1 octobre 2003) : 63–76. http://dx.doi.org/10.26034/tranel.2003.2583.

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L’étude de la conversation entre un patient aphasique et la personne qui prend soin de lui est de plus en plus utilisée pour identifier les troubles de la communication d’une part, et pour motiver une intervention dans le domaine de l’aphasie, d’autre part. Tous les cliniciens sont préoccupés au premier plan par le fait de porter l’impact fonctionnel de la thérapie de l’aphasie à son maximum et de mesurer cet impact d’une manière significative et valide, deux objectifs qui peuvent être réalisés grâce à l’analyse de la conversation. Cet article est centré sur la méthodologie de l’Analyse Conversationnelle (AC), une approche basée sur des données visant à décrire un comportement conversationnel observable et qui cherche des preuves évidentes de réussites ou de pannes dans les séquences de conversation qui ont lieu entre deux partenaires. Une discussion du rôle de l’AC dans l’intervention et la mesure de l’efficacité de la thérapie suivra la présentation des outils et des résultats issus de l’évaluation.

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Lent, John A. « Conversations with Actress Devika Rani Roerich and Painter Svetoslav Roerich (1980) ». Asian Cinema 21, n^o 1 (1 mars 2010) : 3–38. http://dx.doi.org/10.1386/ac.21.1.3_1.

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Berridge, Clara, Yuanjin Zhou, Julie Robillard, Nora Mattek, Sarah Gothard et Jeffrey Kaye. « Comfort and Data Sharing With Artificial Companion Robots Among an Online Cohort ». Innovation in Aging 5, Supplement_1 (1 décembre 2021) : 265. http://dx.doi.org/10.1093/geroni/igab046.1025.

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Abstract Results from a June 2020 survey on comfort with two forms of artificial companion (AC) robots in normal compared with pandemic times will be presented. 1,082 adults age 21-92 (mean 64) completed the online survey for a response rate of 45%. Significantly greater comfort is reported with small AC robots relative to larger human-shaped robots in both normal and pandemic times. In bivariate and adjusted models, younger age and male gender were most commonly associated with greater comfort with AC robots. Most participants (68.7%) did not think an AC robot would make them feel less lonely. About half (52.8 %) of the participants reported that they probably or definitely would want their facial expressions to be read, while a minority (15.0%) were at least somewhat comfortable with AC robots recording their conversations. The most common person participants wanted these data types shared with is themselves, a spouse/partner, and medical provider.

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Fajardo Castañeda, José Alberto. « 'What makes a teacher' : identity and classroom talk ». Cuadernos de Lingüística Hispánica, n^o 22 (2 décembre 2013) : 127. http://dx.doi.org/10.19053/0121053x.2159.

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AbstractThe purpose of this study was to gain a closer understanding of how teachers’ identities are coconstructed and shaped through their interactions. The Conversation Analysis (CA) approach was used to collect and analyze naturally-occurring spoken interaction. An experienced foreign language teacher was video-recorded while she was teaching English to a mixed-intermediate adult class in a monolingual Spanish setting. A two-hour lesson was transcribed in detail followingthe transcription system adapted from van Lier (1988b) and Johnson (1995). Three extracts of classroom conversation were analyzed at a micro-level of interpretation in an emic-empirical perspective in terms of the IRF/E cycle (Initiation-Response-Feedback/Evaluation), turn-takingand repair. Results showed that the interactional flow of the lesson was constructed and maintained through asymmetric and empowered relations. The teacher seemed to determine, control and regulate most of the social actions that took place in the classroom, most of which were also entirely designed on a goal-oriented basis. The structure and implications of such an embedded institutional interaction might contribute to raising teacher awareness towards the effect of such apedagogically restricted foreign language learning atmosphere.Key words: Identity, classroom talk and interaction, conversation analysis.ResumenEste estudio tuvo como propósito lograr comprender de una forma más cercana cómo las identidades de los docentes se co-construyen y moldean a través de sus interacciones. La metodología del Análisis de la Conversación (AC) fue usada para recoger y analizar la interacciónoral que ocurre de forma espontánea y natural. Una experimentada docente de lengua extranjera fue filmada mientras enseñaba Inglés intermedio a un grupo mixto de adultos en un contexto monolingüe Español. Una sesión de dos horas de clase fue totalmente transcrita siguiendo el sistema de transcripción adaptado de van Lier (1988b) y Johnson (1995). Se analizaron tres fragmentos de conversaciones en el salón de clase a un micro-nivel de interpretación desde una perspectiva émico- empírica en relación con el ciclo IRR/E (iniciación-RespuestaRetroalimentación/Evaluación), manejo de turnos y reparación. Los resultados revelaron que el flujo de la conversación se construyó y mantuvo mediante relaciones empoderadas y asimétricas. El maestro aparece como la persona que determina, controla y regula la mayoría de las acciones que tomaron lugar en el salón de clase, las cuales al parecer fueron totalmente diseñadas sobre la base de los objetivos pedagógicos propuestos. La estructura e implicaciones de esta incrustada interacción institucional podría contribuir para despertar la conciencia de los docentes sobre el efecto de tal atmósfera pedagógica restrictiva de aprendizaje de la lengua extranjera.Palabras clave: identidad, conversación en el salón de clase e interacción, Análisis de la Conversación.

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Ni, Hui Jun. « AC-DC-AC Frequency Control System Simulation Analysis ». Applied Mechanics and Materials 536-537 (avril 2014) : 1110–13. http://dx.doi.org/10.4028/www.scientific.net/amm.536-537.1110.

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Asynchronous motor various start models was analyzed through Mat-lab programming. With analysis on AC-DC-AC inverter startup simulation model, the results show inverter startup has advantages of startup time shortened, good stability, and quick convergence.

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Vaclavek, Pavel, Petr Blaha et Ivo Herman. « AC Drive Observability Analysis ». IEEE Transactions on Industrial Electronics 60, n^o 8 (août 2013) : 3047–59. http://dx.doi.org/10.1109/tie.2012.2203775.

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Daly, John A., David J. Weber, Anita L. Vangelisti, Madeline Maxwell et Heather Neel. « Concurrent cognitions during conversations : Protocol analysis as a means of exploring conversations ». Discourse Processes 12, n^o 2 (avril 1989) : 227–44. http://dx.doi.org/10.1080/01638538909544727.

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Georgiev, G. V., et D. D. Georgiev. « SEMANTIC ANALYSIS OF ENGINEERING DESIGN CONVERSATIONS ». Proceedings of the Design Society : DESIGN Conference 1 (mai 2020) : 1265–74. http://dx.doi.org/10.1017/dsd.2020.294.

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AbstractTo objectively and quantitatively study transcribed protocols of design conversations, we apply a semantic analysis approach based on dynamic semantic networks of nouns. We examined the applicability of the approach focused on a dynamic evaluation of the design problem solving process in engineering design educational settings. Using a case of real-world case, we show that the approach is able to determine the time dynamics of semantic factors such as level of abstraction, polysemy, information content, and quantify convergence/divergence in engineering design conversations.

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Kasman, Kasman. « PERAN SEMANTIK PREDIKAT PADA VERBA BERVALENSI SATU, DUA, DAN TIGA DALAM BAHASA SAMAWA DIALEK SUMBAWA BESAR/THE SEMANTIC ROLES OF THE PREDICATES ON VERB ONE, TWO, AND THREE SUMBAWA LANGUAGES IN THE SUMBAWA BESAR DIALECT ». Aksara 32, n^o 2 (3 janvier 2021) : 287–98. http://dx.doi.org/10.29255/aksara.v32i2.445.287-298.

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Abstrak Penelitian terhadap peran semantik bahasa Samawa masih belum banyak dilakukan. Untuk mendukung pengembangan dan pelestarian bahasa Samawa, penelitian-penelitian deskriptif seperti ini tetap perlu dilakukan. Penelitian ini difokuskan pada peran verba bervalensi satu, dua, dan tiga dalam bahasa Samawa dialek Sumbawa Besar dan bertujuan untuk mendeskripsikan peran semantik verba bervalensi tersebut. Teori yang digunakan dalam penelitian ini adalah teori sintaksis struktural. Data dikumpulkan dengan metode cakap dan metode simak. Data yang terkumpul kemudian dianalisis menggunakan me- tode padan intralingual. Hasil dari analisis data menunjukkan bahwa verba bervalensi satu melibatkan argumen-argumen yang secara semantik mencermainkan verba proses, tindakan, dan verba keadaan. Adapun verba bervalensi dua melibatkan argumen-argumen yang secara semantik merefleksikan verba tindakan, seperti pada sangode (mengecilkan), samasak (memasak), dan pina (membuat). Secara sintaksis verba-verba tindakan itu membutuhkan kehadiran dua argumen kalimat sekaligus. Sementara itu, verba bervalensi tiga yang secara semantik merefleksikan makna benefaktif membutuhkan kehadiran tiga argu-men kalimat sekaligus. Kata kunci: semantik, sintaksis, subjek, predikat, argumen Abstract Research on semantic roles in Samawa language has not been comprehensively done. To support the ef- forts of fostering and developing Samawa language, descriptive studies like this study are always needed. This study is focused on the role of verb valency one, two, and three in Samawa language, especially in Sumbawa Besar Dialect and aimed to describe their semantic roles. The theory used in this study is syntax structural theory. The data were collected using two methods realized by observing and listening to the conversation. The collected data were then analyzed using comparative method. Results of data analysis indicated that syntactically one-valence verbs require argument which semantically re ies process, ac- tion, and constant meaning. While two-valence verb requires arguments which semantically re ies action, such as verbs Sangode (to make something smaller), Samasak (to cook), and Pina (to make). These kind of verbs syntactically require two sentence arguments. While three-valence verb which semantically shows benefective meaning needs the presence of three sentence arguments. Keywords: Semantic, syntactic, subject, predicate, argument

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Thèses sur le sujet "Analysis of conversations (AC)"

VERGINE, ILARIA. « (Inter)azioni Comunicative e Identità in Ambienti di Realtà Mista : Una Proposta Metodologica ». Doctoral thesis, Università Cattolica del Sacro Cuore, 2021. http://hdl.handle.net/10280/107360.

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L’avanzamento delle tecnologie digitali ha permesso ai soggetti di interagire in ambienti diversi da quelli fisici causando cambiamenti nelle modalità di comunicazione. Il dispositivo Microsoft HoloLens (MHL) ha introdotto la possibilità di sperimentare un nuovo ambiente chiamato pure mixed reality. Questo lavoro consiste in una proposta metodologica interdisciplinare per studiare la comunicazione sincrona e il farsi dell’identità in essa quando viene utilizzato MHL. Per rispettare la complessità ontologica del fenomeno, ho combinato due prospettive: multimodality e social psychology of cyberplaces. L’adozione di queste prospettive ha permesso di ritagliare all’interno del fenomeno studiato un oggetto di ricerca definibile come (inter)azione comunicativa. Per studiarlo, ho elaborato una proposta metodologica che combina due metodi qualitativi: multimodal (inter)action analysis (MIA; dalla multimodality) e analysis of conversations (AC; dalla social psychology of cyberplaces). Per esaminare il farsi dell’identità nell’(inter)azione comunicativa, ho arricchito la proposta metodologica con l’intersubjectivity model, una proposta di modello teorico derivato da: MIA identity framework dalla multimodality e modello dell’intersoggettività enunciativa dalla social psychology of cyberplaces. L’intera linea argomentativa del lavoro è stata supportata da esempi di analisi utilizzando un corpus di 16 (inter)azioni comunicative diadiche videoregistrate. Ogni diade era composta da un soggetto che utilizzava MHL e uno che utilizzava un pc.
Advances in digital-based technologies have allowed subjects to interact in environments other than physical ones causing changes in communication modalities. Microsoft HoloLens (MHL) introduced the possibility of experiencing a new digital environment: pure mixed reality. This work consists of an interdisciplinary methodological proposal to study synchronous communication and the making of identity in it when MHL is used. To respect the phenomenon’s ontological complexity, I combined two perspectives in this work: multimodality and social psychology of cyberplaces. The adoption of these perspectives reduced the phenomenon in a research object called communicative (inter)action. To study it, I elaborated a methodological proposal that combines two qualitative methods: multimodal (inter)action analysis (MIA; from multimodality) and analysis of conversations (AC; from social psychology of cyberplaces). To examine the making of identity in communicative (inter)action, I enriched the methodological proposal with a theoretical model proposal. The theoretical model proposal is a model that I called intersubjectivity model derived from: MIA framework on multimodal identity from multimodality and utterance intersubjectivity model from social psychology of cyberplaces. The line of argument was supported by analysis examples using a corpus of 16 videotaped dyadic communicative (inter)actions. Each dyad had one subject using MHL and another using a pc.

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Santos, Muñoz Arantxa. « Conversación digital : copresencia y disponibilidad : Estudio pragmático del preámbulo de reuniones multipartitas por videoconferencia ». Doctoral thesis, Uppsala universitet, Romanska språk, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:du-23172.

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The present thesis explores how interaction is initiated in multi-party meetings in Adobe Connect, 7.0, with a particular focus on how co-presence and mutual availability are established through the preambles of 18 meetings held in Spanish without a moderator. Taking Conversation Analysis (CA) as a methodological point of departure, this thesis comprises four different studies, each of them analyzing a particular phenomenon within the interaction of the preambles in a multimodal environment that allows simultaneous interaction through video, voice and text-chat. The first study (Artículo I) shows how participants solve jointly the issue of availability in a technological environment where being online is not necessarily understood as being available for communicating. The second study (Artículo II) focuses on the beginning of the audiovisual interaction; in particular on how participants check the right functioning of the audiovisual mode. The third study (Artículo III) explores silences within the interaction of the preamble. It shows that the length of gaps and lapses become a significant aspect the preambles and how they are connected to the issue of availability. Finally, the four study introduces the notion of modal alignment, an interactional phenomenon that systematically appears in the beginnings of the encounters, which seems to be used and understood as a strategy for the establishment of mutual availability and negotiation of the participation framework. As a whole, this research shows how participants, in order to establish mutual co-presence and availability, adapt to a particular technology in terms of participation management, deploying strategies and conveying successive actions which, as it is the case of the activation of their respective webcams, seem to be understood as predictable within the intricate process of establishing mutual availability before the meeting starts.

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Joty, Shafiq Rayhan. « Discourse analysis of asynchronous conversations ». Thesis, University of British Columbia, 2013. http://hdl.handle.net/2429/45674.

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A well-written text is not merely a sequence of independent and isolated sentences, but instead a sequence of structured and related sentences. It addresses a particular topic, often covering multiple subtopics, and is organized in a coherent way that enables the reader to process the information. Discourse analysis seeks to uncover such underlying structures, which can support many applications including text summarization and information extraction. This thesis focuses on building novel computational models of different discourse analysis tasks in asynchronous conversations; i.e., conversations where participants communicate with each other at different times (e.g., emails, blogs). Effective processing of these conversations can be of great strategic value for both organizations and individuals. We propose novel computational models for topic segmentation and labeling, rhetorical parsing and dialog act recognition in asynchronous conversation. Our approaches rely on two related computational methodologies: graph theory and probabilistic graphical models. The topic segmentation and labeling models find the high-level discourse structure; i.e., the global topical structure of an asynchronous conversation. Our graph-based approach extends state-of-the-art methods by integrating a fine-grained conversational structure with other conversational features. On the other hand, the rhetorical parser captures the coherence structure, a finer discourse structure, by identifying coherence relations between the discourse units within each comment of the conversation. Our parser applies an optimal parsing algorithm to probabilities inferred from a discriminative graphical model which allows us to represent the structure and the label of a discourse tree constituent jointly, and to capture the sequential and hierarchical dependencies between the constituents. Finally, the dialog act model allows us to uncover the underlying dialog structure of the conversation. We present unsupervised probabilistic graphical models that capture the sequential dependencies between the acts, and show how these models can be trained more effectively based on the fine-grained conversational structure. Together, these structures provide a deep understanding of an asynchronous conversation that can be exploited in the above-mentioned applications. For each discourse processing task, we evaluate our approach on different datasets, and show that our models consistently outperform the state-of-the-art by a wide margin. Often our results are highly correlated with human annotations.

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Yang, Bo. « "Getting to know you" conversations ». Thesis, University of Aberdeen, 2013. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=210226.

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This dissertation is about “getting to know you” conversation, a form of conversation prevalent in everyday interactions. It has been defined (Garner 2004: 181) as an interaction in which participants, usually of equal social status, make initial contact and establish friendly relations, and in which they are largely concerned with finding neutral topics through which they can establish common ground—shared experiences, opinions, interests, and the like. This doctoral research was based on extensive recordings and transcription of such conversations in English between university students (both native with native and native with non-native speakers), in a relatively naturalistic setting. The analysis was conducted in two steps. The first step was to identify and describe the recurrent patterns of the data, through well-established methods of Conversation Analysis. The second was to classify identified structures within a pragmatic framework: in other words, to label utterances and sequences according to their functional properties, and to specify their roles in building relationships between the interactants. Three major sequences were identified and discussed in detail in terms of their forms, functions and distributions in a “getting to know you” conversation. Differences in usage and pragmatic effectiveness between native and non-native speakers were also identified. The research makes a new contribution to the relatively small but growing body of work in the field of conversational pragmatics. The findings of this PhD work can, and it is hoped will be, made available for EFL classroom use in China. Drawing on the present study, a potential model is proposed for an instructional unit on sequences in GTKY conversations. The suggested approach would result in a change to the typical roles of teacher and textbooks currently occurring in Chinese education, which is outlined at the end of this dissertation.

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Leung, Ka-yan, et 梁家欣. « Topic management in Cantonese conversations ». Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2005. http://hub.hku.hk/bib/B31602939.

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Miles, Susie. « Creating conversations : an inclusive approach to the networking of knowledge about education in Southern contexts ». Thesis, University of Manchester, 2009. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:194503.

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This thesis provides a synthesis of knowledge about inclusive networking in an international context, derived from the experience of stakeholders in education in countries of the South. It is suggested that inclusive networking facilitates the telling of stories, challenges stereotypes, humanises headlines and promotes contextually relevant research. The research question: “What are the key principles for the development of an inclusive international network?” was developed as a guide to this study. Using a process of autoethnographic analysis, I identified my tacit knowledge of inclusive networking through a continual analysis and cross-referencing of the ten publications presented here, and a wider search of the literature. This thesis is presented as a narrative in three parts. In the first part I trace my motivation for becoming involved in international networking as a strategy to address global inequality, review the literature on networking most relevant to this thesis, and identify some of the barriers to publishing faced by education stakeholders in the South. In the second part, a case study of the Enabling Education Network (EENET) is presented and a wide range of networking dilemmas identified, related to the way information is collected and shared across diverse Southern contexts. The overarching dilemmas of northern dominance and deficit thinking are discussed in the context of oral culture and the global digital and communication divide, and the difficulties in promoting genuinely critical conversations. In the third part, it is argued that contextual detail and transparency about authorship are critical to the construction of stories and accounts if they are to be meaningfully networked across diverse contexts. However, it is suggested that investing resources in the development of documentation, reflection and analytical skills in education stakeholders is an essential part of inclusive networking, if ‘promising’ practice is to be captured from a Southern perspective. Following this, the penultimate chapter puts forward four key principles relating to the development of an inclusive international network that emerged from the analysis of publications and the wider literature: 1. sharing of information, knowledge and stories between contexts; 2. knowledge creation: through reflection, documentation and analysis; 3. balancing insider and outsider knowledge and perspectives; and 4. developing appropriate responses at community level. I conclude with some possible future directions for research, and with a personal story which encapsulates the theoretical framework of this thesis.

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Klitsie, Clara. « Teacher conversations : what happens when teachers talk ». Thesis, Nelson Mandela Metropolitan University, 2014. http://hdl.handle.net/10948/d1020081.

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Teaching has a primary focus on engagement with students, but paradoxically, it can be experienced as lonely, private work, in classrooms behind closed doors, with an accompanying sense of deep disconnection from peers. When six experienced teachers sought to counteract this isolation, they formed a group which embarked on a shared journey of reflection and conversation, with the purpose of increasing selfknowledge, clarifying a sense of self as teacher, extending understanding of the selfhood of other teachers, and exposing the deeper sources of meaning underlying the vocation of teacher. This study sought to describe the information, opinions and beliefs which were exchanged among participants within the group and to describe the dynamics within the group. Furthermore, it sought to identify and describe the self-perceived impact of the experience of such a group, on the vocational vitality of each of the participants. Within an interpretivist epistemology a qualitative phenomenological research approach was adopted for the study. Data were obtained from two sources, consisting of transcripts of conversations from the meetings of a collaborative reflective group and from semi-structured individual interviews with group participants. These were analysed using an inductive approach with the aid of qualitative data analysis software: Atlas ti®. Findings from the study show that a high level of trust and a sense of safety were created through the use of guiding principles for meetings. Content chosen for reflective conversations and the general experience of meetings was perceived as providing a rare opportunity for participants to discover their selfhood as teachers. They reported that this understanding was further broadened by exposure to the selfhood of other teachers. Furthermore, members of the talk group reported that participation had resulted in a lowering of their sense of professional isolation and a renewal of vitality in their teaching. It is hoped that the findings from the study will inform an understanding of the experience of dialogue in a reflective, peer group where teachers focus on exploring together “who they are” as teachers. It provides valuable insights of the personal and professional transformations which can take place for teachers participating in conversations which focus on their inner landscape. Furthermore, the study has the potential to inform South African teacher professional development programmes with approaches which focus on teacher vocational renewal and vitality.

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Kwak, Sangshin. « Design and analysis of modern three-phase AC/AC power converters for AC drives and utility interface ». Texas A&M University, 2005. http://hdl.handle.net/1969.1/2336.

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Significant advances in modern ac/ac power converter technologies and demands of industries have reached beyond standard ac/ac power converters with voltage-source inverters fed from diode rectifiers. Power electronics converters have been matured to stages toward compact realization, increased high-power handling capability, and improving utility interface. Modern ac/ac power converter topologies with various control strategies have been introduced for the further improvements, such as matrix converters, current-fed converters, PWM rectifiers, and active power filters. In this dissertation, several new converter topologies are proposed in conjunction with developed control schemes based on the modern ac/ac converters which enhance performance and solve the drawbacks of conventional converters. In this study, a new fault-tolerant PWM strategy is first proposed for matrix converters. The added fault-tolerant scheme would strengthen the matrix converter technology for aerospace and military applications. A modulation strategy is developed to reshape output currents for continuous operation, against fault occurrence in matrix converter drives. This study designs a hybrid, high-performance ac/ac power converter for high power applications, based on a high-power load commutated inverter and a mediumpower voltage source inverter. Natural commutation of the load commutated inverter is actively controlled by the voltage source inverter. In addition, the developed hybrid system ensures sinusoidal output current/voltage waveforms and fast dynamic response in high power areas. A new topology and control scheme for a six-step current source inverter is proposed. The proposed topology utilizes a small voltage source inverter, to turn off main thyristor switches, transfer reactive load energy, and limit peak voltages across loads. The proposed topology maximizes benefits of the constituent converters: highpower handling capability of large thyristor-based current source inverters as well as fast and easy control of small voltage source inverters. This study analyzes, compares, and evaluates two topologies for unity power factor and multiple ac/ac power conversions. Theoretical analyses and comparisons of the two topologies, grounded on mathematical approaches, are presented from the standpoint of converter kVA ratings, dc-link voltage requirements, switch ratings, semiconductor losses, and reactive component sizes. Analysis, simulation, and experimental results are detailed for each proposed topology.

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Shvets, Dmitry. « Analysis of AC low-voltage energy harvesting ». Thesis, Monterey, California. Naval Postgraduate School, 2014. http://hdl.handle.net/10945/43719.

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Piezoelectricity is a material property that generates an electric charge proportional to the mechanical stress placed on the material. This phenomenon was first discovered by the Curie brothers in 1880. This material property gives the ability to turn vibrations into an electrical waveform, but power electronics is necessary to harness this low-level energy. AC power is often produced at the power plant level in modern society; however, low voltage AC power is widely available in vibrational form. The U.S. Navy may be able to utilize piezoelectric technology to harness wasted vibrational energy. Some of these applications include inserting a piezoelectric harvester in shoes to supply small amounts of power to cell phones or utilizing motion energy to provide power to iPod chargers. The power electronics that provides full bridge rectification and step down conversion, which achieves AC-DC power harvesting, is discussed. Also discussed is a breakdown of possible applications for such a device as well as the benefits of turning AC power into DC. A Linear Technology LTC-3588-1 integrated circuit was simulated in software and demonstrated in hardware. The hardware experiment showed that the software accurately predicted the performance of the chip.

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Bergstedt, Edwin, Johan Földhazy et Alexander Lundstjälk. « Vibration Analysis on AC Electric Arc Furnace ». Thesis, KTH, Materialvetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-173354.

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A computerized Fast Fourier Transform system has been used to analyse vibration measurements sampled from a 100-ton electric arc furnace. It has been the hypothesis that patterns in the vibration data would correlate to specific events in the electric arc furnace during the melting process. The theory was that the vibration patterns would be most powerful in multiples of 50 Hz, as the electric arcs operate with a frequency of 50 Hz. It was concluded that the multiples of 50 Hz were dominant. Investigation was made regarding how the amount of scrap affects the amplitude in the vibrations after a defined amount of energy input. It was confirmed that the intensity of the vibrations decreased with increasing mass and basket volume. Another discovery was the M-shaped pattern at the beginning of the melting process. This pattern was statistically analysed. It was found that 71 % of the 41 charges showed an M-shaped correlation. The appearance of this M-shape was analysed regarding power usage, and steel-type. It was concluded that the steel type affected the appearance of the M-shape. The occurrence of flat-bath was also investigated. The theory was that the vibration data would be fairly constant with the occurrence of flat-bath. It was discovered that the vibration data experienced a somewhat constant behaviour towards the end of the melting process in approximately 57 % of the 41 charges. Difficulties were encountered regarding detection of patterns, and correlating them to specific conditions, due to the many parameters that affect the vibration measurements from charge to charge. It was concluded that vibration analysis are unlikely to be used as an absolute way to foresee every event in the electric arc furnace during each charge. But can rather serve as a statistical tool, upon which decisions of how the melting process should be conducted could be based on.

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Livres sur le sujet "Analysis of conversations (AC)"

Rahmani-Andebili, Mehdi. AC Electrical Circuit Analysis. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-60986-3.

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Arrillaga, J. AC-DC power systems analysis. London, UK : The Institution of Electrical Engineers, 1998.

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Wes, Johnstone, dir. DC/AC principles : Analysis and troubleshooting. St. Paul : West Pub., 1992.

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N, Hopkins Dwight, et Davaney Sheila Greeve, dir. Changing conversations : Religious reflection & cultural analysis. New York : Routledge, 1996.

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DC/AC : The basics. Columbus : Merrill Pub. Co., 1989.

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Critical conversations for dummies. Hoboken, N.J : John Wiley & Sons, 2013.

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Kopparapu, Sunil Kumar. Non-Linguistic Analysis of Call Center Conversations. Cham : Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-00897-4.

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Chakravarthy, N. Manu. Conversations and cultural reflections. Delhi : B.R. Pub. Corp. in collaboration with N.M.K.R.V. College, Bangalore, 1999.

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Aḥmad, Sayyid Muk̲h̲tār. High performance AC drives : Modelling analysis and control. London : Springer Verlag, 2010.

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George C. Marshall Space Flight Center., dir. Equivalent circuit models for AC impedance data analysis. [Marshall Space Flight Center, Ala.] : National Aeronautics and Space Administration, George C. Marshall Space Flight Center, 1990.

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Chapitres de livres sur le sujet "Analysis of conversations (AC)"

Mohindru, Pooja, et Pankaj Mohindru. « AC Analysis ». Dans Electronic Circuit Analysis using LTspice XVII Simulator, 145–74. Boca Raton : CRC Press, 2021. http://dx.doi.org/10.1201/9781003199489-6-6.

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Hamedi-Hagh, Sotoudeh. « AC Analysis ». Dans Computational Electronic Circuits, 195–336. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-75568-3_4.

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Salam, Md Abdus, et Quazi Mehbubar Rahman. « AC Circuit Analysis ». Dans Fundamentals of Electrical Circuit Analysis, 281–320. Singapore : Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-8624-3_7.

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Salam, Md Abdus, et Quazi Mehbubar Rahman. « AC Power Analysis ». Dans Fundamentals of Electrical Circuit Analysis, 321–50. Singapore : Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-8624-3_8.

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May, Colin. « AC Theory ». Dans Passive Circuit Analysis with LTspice®, 215–60. Cham : Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-38304-6_6.

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James Paul, Gee. « Perspectives, frameworks, and conversations ». Dans Introducing Discourse Analysis, 148–67. New York, NY : Routledge, 2018. : Routledge, 2017. http://dx.doi.org/10.4324/9781315098692-9.

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Pointon, A. J., et H. M. Howarth. « Mesh or loop analysis and nodal analysis ». Dans AC and DC Network Theory, 48–62. Dordrecht : Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3142-1_5.

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Rahmani-Andebili, Mehdi. « Problems : Sinusoidal Steady-State Analysis ». Dans AC Electrical Circuit Analysis, 1–36. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-60986-3_1.

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Rahmani-Andebili, Mehdi. « Solutions of Problems : Sinusoidal Steady-State Analysis ». Dans AC Electrical Circuit Analysis, 37–149. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-60986-3_2.

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Rahmani-Andebili, Mehdi. « Problems : Sinusoidal Steady-State Analysis of Circuits Including Transformers and Magnetically Coupled Inductors ». Dans AC Electrical Circuit Analysis, 151–70. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-60986-3_3.

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Actes de conférences sur le sujet "Analysis of conversations (AC)"

Mishne, Gilad, David Carmel, Ron Hoory, Alexey Roytman et Aya Soffer. « Automatic analysis of call-center conversations ». Dans the 14th ACM international conference. New York, New York, USA : ACM Press, 2005. http://dx.doi.org/10.1145/1099554.1099684.

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Gumilang, Lutfi, et Mr Juanda. « Interpretation of Meme Conversations Using Multimodality Analysis ». Dans International Conference on Language Phenomena in Multimodal Communication (KLUA 2018). Paris, France : Atlantis Press, 2018. http://dx.doi.org/10.2991/klua-18.2018.20.

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Gainaru, Ana, Stefan Daniel Dumitrescu et Stefan Trausan-Matu. « Toolkit for automatic analysis of chat conversations ». Dans 2010 8th International Conference on Communications (COMM). IEEE, 2010. http://dx.doi.org/10.1109/iccomm.2010.5509066.

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Iordache, Cristiana-Paula, et Ștefan Trăușan-Matu. « Analysis and prediction of politeness in conversations ». Dans RoCHI - International Conference on Human-Computer Interaction. MATRIX ROM, 2021. http://dx.doi.org/10.37789/rochi.2021.1.1.4.

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Bonin, Francesca, Carl Vogel et Nick Campbell. « Social sequence analysis : temporal sequences in interactional conversations ». Dans 2014 5th IEEE Conference on Cognitive Infocommunications (CogInfoCom). IEEE, 2014. http://dx.doi.org/10.1109/coginfocom.2014.7020488.

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Holstrup, Alexander, Lasse Starklit et Andrea Burattin. « Analysis of Information-Seeking Conversations with Process Mining ». Dans 2020 International Joint Conference on Neural Networks (IJCNN). IEEE, 2020. http://dx.doi.org/10.1109/ijcnn48605.2020.9207187.

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Motahari-Nezhad, H., R. Saint-Paul, B. Benatallah, F. Casati, J. Ponge et F. Toumani. « ServiceMosaic : Interactive Analysis and Manipulation of Service Conversations ». Dans 2007 IEEE 23rd International Conference on Data Engineering. IEEE, 2007. http://dx.doi.org/10.1109/icde.2007.369051.

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Gonzales, Laura. « An Analysis of Twitter Conversations at Academic Conferences ». Dans SIGDOC '14 : The 32nd ACM International Conference on the Design of Communication. New York, NY, USA : ACM, 2014. http://dx.doi.org/10.1145/2666216.2666219.

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Nita, Liviu-Andrei, Stefan Trausan-Matu et Traian Rebedea. « Analysis of convergence and divergence in chat conversations ». Dans RoCHI - International Conference on Human-Computer Interaction. MATRIX ROM, 2020. http://dx.doi.org/10.37789/rochi.2020.1.1.17.

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Oktarina, Diana Rizki, et Nuria Haristiani. « Analysis of Multilingual Community Conversations on Online Media ». Dans 4th International Conference on Language, Literature, Culture, and Education (ICOLLITE 2020). Paris, France : Atlantis Press, 2020. http://dx.doi.org/10.2991/assehr.k.201215.028.

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Rapports d'organisations sur le sujet "Analysis of conversations (AC)"

Hicks, Jacky, Berni Smith, Anna Downs et Benedetta Musillo. Conversations on Gender and Tax. Institute of Development Studies, juin 2022. http://dx.doi.org/10.19088/k4d.2022.064.

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By being ‘gender aware’, tax policy, tax administration and tax research have the potential to both reduce discrimination and promote women’s economic empowerment, and benefit the wider inclusive economic growth and development process. Civil society organisations (CSOs) play an important role in all aspects of taxation and gender, from improving transparency and accountability of government decisions on tax policy, and engaging with governments and oversight institutions on taxation and gender, to educating female taxpayers and monitoring services that revenue authorities and ministries of finance provide. Specialised CSOs could carry out gendered analysis of taxation and its impacts in parallel to gendered analysis of budgeting.

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Coffrin, Carleton James. Relaxations of AC Minimal Load-Shedding for Severe Contingency Analysis. Office of Scientific and Technical Information (OSTI), avril 2018. http://dx.doi.org/10.2172/1434429.

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Gillespie, Rebecca, et Stephanie Friend. Trends in Twitter conversations about food during 2019-20. Food Standards Agency, mars 2022. http://dx.doi.org/10.46756/sci.fsa.lbs663.

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As part of our responsibilities, we work to understand the continuing evolution of the food landscape to identify opportunities to improve standards of food safety and/or authenticity. To do this, we use science and evidence to tackle the challenges of today, to identify and address emerging risks, and to ensure the UK food safety regulation framework is modern, agile and represents consumer interests. One way we build our understanding of consumer interests and concerns is through social media analysis, which permits real time monitoring of key issues relating to food safety and other consumer concerns.

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Reese, Samantha, Stephen Frank, Brian Ball et Vagelis Vossos. Cost Analysis Framework for Comparing AC and DC Design Alternatives for Building Electrical Distribution Systems. Office of Scientific and Technical Information (OSTI), mai 2021. http://dx.doi.org/10.2172/1785958.

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James, David, Dennis Raunig et Sean Cunningham. Causal Analysis of the Inadvertent Contact with an Uncontrolled Electrical Hazardous Energy Source (120 Volts AC). Office of Scientific and Technical Information (OSTI), octobre 2014. http://dx.doi.org/10.2172/1164844.

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Klosek, Katherine. Controlled Digital Lending. Association of Research Libraries, juin 2022. http://dx.doi.org/10.29242/report.controlleddigitallending2022.

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This paper discusses ARL’s position on controlled digital lending of library materials and lays out considerations that may support research libraries in crafting their use case and preparing for a fair-use analysis. The paper also reflects a discussion of digital-lending practices, concerns, and opportunities held by the ARL Advocacy and Public Policy Committee and guests during the October 2021 Fall Association Meeting. That discussion, and subsequent conversations around an earlier version of this paper, informed ARL’s position on digital lending.

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Miller, James, Anthony Latino, Chandana Konidala et Raymond Patenaude. Army R-22 refrigerant phase-out strategy. Engineer Research and Development Center (U.S.), mars 2021. http://dx.doi.org/10.21079/11681/40039.

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R-22 (also known as HCFC-22) is one of the most widely used refrigerants in U.S. Army air-conditioning and refrigeration (AC&R) systems since the phase-out of R-12 refrigerant in 1995. The need to phase out R-22 is attributed to its global warming potential and high ozone-depleting capability. The U.S. Army has tens of thousands of aging AC&R systems that will remain dependent on R-22, or one of the recently developed substitutes for R-22, until they reach the end of their operational life. This project conducted a survey to understand the current R-22 usage and types of R-22 AC&R equipment that are in use across U.S. Army Installation Management Command (IMCOM) installations. This study describes several methods to remove or retrofit R-22 from typical AC&R equipment and implementation strategies to meet the stated goal of eliminating R-22 from IMCOM installations. The scope of this project included the review of BUILDER SMS data for IMCOM installations, which included data on 13,000 pieces of comfort cooling equipment for 31 installations. The report also provides an analysis of several R-22 alternatives and their physical properties and compatibility. Mission critical tactical cooling that uses R-22 refrigerant was not within the scope of this project.

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Samji, Salimah, et Mansi Kapoor. Funda Wande through the Lens of PDIA : Showcasing a Flexible and Iterative Learning Approach to Improving Educational Outcomes. Research on Improving Systems of Education (RISE), janvier 2022. http://dx.doi.org/10.35489/bsg-rise-ri_2022/036.

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Funda Wande has adopted a ‘learning by doing’ strategy that is similar to the Problem Driven Iterative Adaptation (PDIA) approach to solving complex problems. PDIA is a high-impact process of innovation that helps organisations develop the capability to solve complex problems while they are solving such problems. It is a step-by-step framework that helps break down problems into their root causes, identify entry points, search for possible solutions, take action, reflect upon what is learned, adapt, and then act again. Its dynamic process and tight feedback loops enable teams to find and fit solutions to the local context. This case provides a narrative of the Funda Wande story with boxes illustrating how PDIA principles and tools like problem construction, deconstruction, entry point analysis, iteration, and building authorisation would have been applied in practice. The sources of this case include a literature review of education in South Africa, related research documents, and conversations with staff at Funda Wande.

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Warin, Thierry. The World Health Organization in a Post-COVID-19 Era : An Exploration of Public Engagement on Twitter. CIRANO, juin 2022. http://dx.doi.org/10.54932/ehuh4224.

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This article analyses the conversations on Twitter related to the World Health Organization (WHO). We collect the text of the discussions as well as the metadata associated with each tweet. Our dataset is exhaustive as it includes all the tweets produced by WHO. Likes, retweets, and replies capture the level of engagement. The goal is to quantify the balance of likes, retweets, and replies, also known as “ratios”, and study their dynamics as proxy for the collective engagement in response to WHO’s communications. Our results demonstrate a higher engagement of the public receiving the information pushed by WHO. This engagement translates into a more balanced reaction with still a more likely favorable opinion vis-à-vis WHO, but with also more challenges. This protocol based on quantitative measures to serve as a proxy to the legitimacy concept seems to hold its promises. In particular, we also perform a simple sentiment analysis to check the robustness of our conclusions.

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López-Valverde, Nansi, Antonio López-Valverde, Ana Suarez, Bruno Macedo de Sousa et Juan Manuel Aragoneses. Association of gastric infection and periodontal disease through Helicobacter pylori as a common denominator : A systematic review and meta-analysi. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, octobre 2021. http://dx.doi.org/10.37766/inplasy2021.10.0097.

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Review question / Objective: Is gastric helicobacter pylori infection related to periodontal diseases? Condition being studied: Therefore, the aim of this systematic review and meta-analysis was to identify and analyze clinical studies to determine the direct correlation between Helicobacter Pylori gastric infection andPeriodontal Disease. Study designs to be included: Clinical studies that provided data on Helicobacter Pylori infection in both the stomach and oral cavity, confirmed by polymerase chain reaction (PCR), rapid urease test (RUT) or enzyme-linked immunosorbent assay (ELISA). Clinical studies that associated PD with Helicobacter Pylori. The diagnosis of PD was confirmed ac-cording to the diagnostic criteria in periodontology.

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