To see the other types of publications on this topic, follow the link: Companions.
Dissertations / Theses on the topic 'Companions'
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 'Companions.'
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
Endenburg, Nienke. "Animals as companions : demographic, motivational and ethical aspects of companion animal ownership /." Amsterdam : Thesis publ, 1991. http://catalogue.bnf.fr/ark:/12148/cb35608320g.
Full text
2
Kleinehagenbrock, Marcus. "Interaktive Verhaltenssteuerung für robot companions." [S.l. : s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=975113534.
Full text
3
Steele, Paul Raymond. "Ultracool companions to white dwarfs." Thesis, University of Leicester, 2010. http://hdl.handle.net/2381/8270.
Full textAbstract:
In this thesis I present a new near-infrared photometric search for unresolved ultracool companions and debris disks to white dwarfs in UKIDSS DR5. 24 DA white dwarfs were found with multiple excesses indicative of a low mass companion, with 7 of these having a predicted mass in the range associated with brown dwarfs. The results of this survey show that the unresolved brown dwarf companion fraction to DA white dwarfs is 0.5 ≤ fWD+BD ≤ 1.8 ± 0.7%. I also calculate the unresolved L-dwarf companion fraction to be 0.5 ≤ fWD+dL ≤ 1.5 ± 0.6%, which is much higher than the previous estimate of Farihi, Becklin & Zuckerman (2005). However, the results are consistent with previous estimates of the brown dwarf companion fraction to main sequence stars. I analyse the near-infrared spectra of eleven known DA white dwarf + M-dwarf binaries, and compare the spectral types assigned using optical photometry against those assigned using near-infrared spectra. I search for evidence that the known short period systems once existed in a common envelope phase. No such evidence was found. I also present the spectroscopic analysis of two particularly interesting binaries; PG 1234+ 482 and PHL 5038. PG 1234+482 is the hottest and youngest DA white dwarf with a cool companion on the stellar-substellar borderline. I discuss the possibility that the companion is a brown dwarf, and the possibility that the secondary is the source of contamination by heavy metals in the white dwarf's atmosphere. PHL 5038 was identified to have a near-infrared excess in UKIDSS, and the spectroscopic analysis in this thesis confirms that the secondary in this system can be resolved at a projected orbital separation of 55AU, and is a brown dwarf with spectral type L8-L9. This is only the second such pair found (over 20 years later) after GD165AB. The secondary in this system has the potential to be used as a benchmark brown dwarf for testing substellar atmospheric models.
4
Day-Jones, A. C. "Searching for brown dwarf companions." Thesis, University of Hertfordshire, 2009. http://hdl.handle.net/2299/3475.
Full textAbstract:
In this thesis I present the search for ultracool dwarf companions to main sequence stars, subgiants and white dwarfs. The ultracool dwarfs identified here are benchmark objects, with known ages and distances. The online data archives, the two micron all sky survey (2MASS) and SuperCOSMOS were searched for ultracool companions to white dwarfs, where one M9 1 companion to a DA white dwarf is spectroscopically confirmed as the widest separated system of its kind known to date. The age of the M9 1 is constrained to a minium age of 1.94Gyrs, based on the estimated age of the white dwarf from a spectroscopically derived Teff and log g and an initial-final mass relation. This search was extended using the next generation surveys, the sloan digital sky survey (SDSS) and the UK infrared deep sky survey (UKIDSS), where potential white dwarf + ultracool dwarf binary systems from this search are presented. A handful of these candidate systems were followed-up with second epoch near infrared (NIR) imaging. A new white dwarf with a spectroscopic M4 companion and a possible wide tertiary ultracool component is here confirmed. Also undertaken was a pilot imaging survey in the NIR, to search for ultracool companions to subgiants in the southern hemisphere using the Anglo-Australian telescope. The candidates from that search, as well as the subsequent follow-up of systems through second epoch NIR/optical imaging and methane imaging are presented. No systems are confirmed from the current data but a number of good candidates remain to be followed-up and look encouraging. A search for widely separated ultracool objects selected from 2MASS as companions to Hipparcos main-sequence stars was also undertaken. 16 candidate systems were revealed, five of which had been previously identified and two new L0 2 companions are here confirmed, as companions to the F5V spectroscopic system HD120005 and the M dwarf GD 605. The properties of HD120005C were calculated using the DUSTY and COND models from the Lyon group, and the age of the systems were inferred from the primary members. For GD 605B no age constraint could be placed due to the lack of information available about the primary, but HD120005C has an estimated age of 2-4Gyr. In the final part of this thesis I investigate correlations with NIR broadband colours (J - H, H - K and J - K) with respect to properties, Teff , log g and [Fe/H] for the benchmark ultracool dwarfs, both confirmed from the searches undertaken in this work and those available from the literature. This resulted in an observed correlation with NIR colour and Teff, which is presented here. I find no correlation however with NIR colours and log g or [Fe/H], due in part to a lack of suitable benchmarks. I show that despite the current lack of good benchmark objects, this work has the potential to allow UCD properties to be measured from observable characteristics, and suggest that expanding this study should reveal many more benchmarks where true correlation between properties and observables can be better investigated.
5
Koegel, Mary. "Never Alone: A "Look" At Imaginal Companions." TopSCHOLAR®, 2007. http://digitalcommons.wku.edu/theses/429.
Full textAbstract:
American culture tends to consider imaginary friends (or imaginal companions, as I refer to them) as a folk belief belonging in the realm of childhood. If an adult believes in imaginal companions, they are potentially subject to the social stigma of psychological labeling. The mass media reflects this perception of reality and influences social interactions regarding experiences and beliefs in imaginal companions. Fear of this social stigma limits folk group size, which potentially creates an issue with informant group size. I gathered my informants from a group of friends, whom I interviewed over a one-year period. Although there is a danger of overgeneralizing when dealing with a small informant group, I reached many useful conclusions pertaining to the belief in imaginal companions as a "hidden tradition" expressed through narratives in small groups. Social relationships clearly exist between imaginal companions and believers of imaginal companions. The formation of a dyadic folk group begins with the initial appearance of the imaginal companion and communication with the believer. The believer perceives their imaginal companion or companions by manipulating the influence of the culture and society around them. However, there are other folk groups to consider in relation to this phenomenon as well. Through storytelling in safe environments, folk groups of varying sizes emerge, ranging from other dyads to slightly larger groups. Although a believer may create these groups through cautious social interaction, they may also be born into a safe environment such as a family of believers. These groups tend to revolve around storytelling. Investigations of these social interactions, as expressed in narrative form, suggest American cultural influences on personal perceptions of reality.
6
Ashcroft, Catherine. "Imaginary companions : phenomenology and the child's response." Thesis, University of Southampton, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.268650.
Full text
7
Hester, Cassie. "Elevating the Everyday: Designed Objects as Companions." VCU Scholars Compass, 2012. http://scholarscompass.vcu.edu/etd/2794.
Full textAbstract:
From fleeting interactions to long affairs, our relationships with things are diverse and complex. Like people, designed objects and environments are close companions in our lives. The way we understand and engage with artifacts is parallel to the way we interpret and interact with each other. A constant source of comfort and delight, frustration and anxiety, their personalities inform our everyday dialogues and experiences. Designed artifacts assume engaging and pleasurable personalities when they transcend materials, challenge perceptions, and garner active, reflective interactions. Through the investigation of familiar materials such as concrete, crayons, paper, sequins, and thread in unfamiliar formats and contexts, I am creating objects that are playful in construction and interaction. By imbuing objects with friendly and intriguing personalities, everyday interactions and experiences with these objects are elevated, as users invest in pleasurable forays and relationships.
8
Bloom, Emily. "The impact of imaginary companions on social development." Lynchburg, Va. : Liberty University, 2008. http://digitalcommons.liberty.edu.
Full text
9
Solanki, Nikesh. "Uniform companions for expansions of large differential fields." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/uniform-companions-for-expansions-of-large-differential-fields(a565a0d0-24b5-40a6-a414-5ead1631bc8d).html.
Full text
10
Pallanca, Cristina <1985>. "Cosmic-Lab: Optical companions to binary Millisecond Pulsars." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amsdottorato.unibo.it/6218/1/pallanca_cristina_tesi.pdf.
Full textAbstract:
Millisecond Pulsars (MSPs) are fast rotating, highly magnetized neutron stars. According to the "canonical recycling scenario", MSPs form in binary systems containing a neutron star which is spun up through mass accretion from the evolving companion. Therefore, the final stage consists of a binary made of a MSP and the core of the deeply peeled companion. In the last years, however an increasing number of systems deviating from these expectations has been discovered, thus strongly indicating that our understanding of MSPs is far to be complete.
The identification of the optical companions to binary MSPs is crucial to constrain the formation and evolution of these objects. In dense environments such as Globular Clusters (GCs), it also allows us to get insights on the cluster internal dynamics.
By using deep photometric data, acquired both from space and ground-based telescopes, we identified 5 new companions to MSPs. Three of them being located in GCs and two in the Galactic Field. The three new identifications in GCs increased by 50% the number of such objects known before this Thesis. They all are non-degenerate stars, at odds with the expectations of the "canonical recycling scenario". These results therefore suggest either that transitory phases should also be taken into account, or that dynamical processes, as exchange interactions, play a crucial role in the evolution of MSPs.
We also performed a spectroscopic follow-up of the companion to PSRJ1740-5340A in the GC NGC 6397, confirming that it is a deeply peeled star descending from a ~0.8Msun progenitor. This nicely confirms the theoretical expectations about the formation and evolution of MSPs.
11
Pallanca, Cristina <1985>. "Cosmic-Lab: Optical companions to binary Millisecond Pulsars." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amsdottorato.unibo.it/6218/.
Full textAbstract:
Millisecond Pulsars (MSPs) are fast rotating, highly magnetized neutron stars. According to the "canonical recycling scenario", MSPs form in binary systems containing a neutron star which is spun up through mass accretion from the evolving companion. Therefore, the final stage consists of a binary made of a MSP and the core of the deeply peeled companion. In the last years, however an increasing number of systems deviating from these expectations has been discovered, thus strongly indicating that our understanding of MSPs is far to be complete.
The identification of the optical companions to binary MSPs is crucial to constrain the formation and evolution of these objects. In dense environments such as Globular Clusters (GCs), it also allows us to get insights on the cluster internal dynamics.
By using deep photometric data, acquired both from space and ground-based telescopes, we identified 5 new companions to MSPs. Three of them being located in GCs and two in the Galactic Field. The three new identifications in GCs increased by 50% the number of such objects known before this Thesis. They all are non-degenerate stars, at odds with the expectations of the "canonical recycling scenario". These results therefore suggest either that transitory phases should also be taken into account, or that dynamical processes, as exchange interactions, play a crucial role in the evolution of MSPs.
We also performed a spectroscopic follow-up of the companion to PSRJ1740-5340A in the GC NGC 6397, confirming that it is a deeply peeled star descending from a ~0.8Msun progenitor. This nicely confirms the theoretical expectations about the formation and evolution of MSPs.
12
Allemo, Erik. "Mobile Phones as Technological Companions : Users' Perspectives and Experiences." Thesis, Uppsala University, Department of Information Technology, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-111150.
Full textAbstract:
The applicability of the term technological companion on mobile phones has been investigated with focus group sessions with mobile phone users in Uppsala, Sweden. A definition of a companion with features like, friendliness, long time proximity, information handling was conceived. With the help of this definition the applicability was then tried with the help of data gathered during the focus group sessions. The study shows that users rarely turn off their phones and that the phones accompany them almost everywhere. The phones are mostly used for communication between people, but also to access information, play music and to take photographs. The users would not want to live their lives without their phones but some of them agree that mobile phones and constantly being within reach can increase the feelings of stress. The users do not agree that they have a relationship to their mobile phones, other than that it is a useful tool for getting things done. Thus it is concluded that the users do not think of their mobile phones in terms of technological companions. Given that mobile phones do share a lot of the features that are thought to be necessary for a companionship it is suggested that mobile phones are likely to be a suitable platform for implementing a technological companion.
13
Chowanda, Andry. "Towards emotional and socially realistic game companions with personality." Thesis, University of Nottingham, 2018. http://eprints.nottingham.ac.uk/53498/.
Full textAbstract:
This thesis presents a fully integrated and modular framework for social and emotional game companion that focuses on realistic social interaction between the player and Non-Player Characters (NPCs) in a game environment. Moreover, this thesis proposes integrated computational models for a formulation of action selection rules based on the game companion's personality, the relation between player and game companion and the perceived (non-)verbal actions to enhance the NPC's believability and the player's interaction in a game context. The rules were derived from data collections of both human-human and human-machine interactions. This thesis argues that NPC with such capability will accommodate a new experience when playing games. To illustrates the effectiveness of the proposed framework and computational models, the author implemented the framework and computational models into two game scenarios: The Smile Game where a human player who abides in the real world played with an ECA who inhabits a virtual world. The second scenario was The Skyrim Game, where an avatar represented the human player, who played with a virtual NPC in a virtual world. With a total of 117 participants in 217 interactions with the system, the results show that the players evidently perceived the NPCs' personality in accordance with the one set to them. The NPCs' ability to display emotions appropriately also provides the feeling of immersion in games to the players. Moreover, the ability to forge relationships naturally with the game companions gives the sentimental feeling towards the game companions. The main contribution of the work presented to the field of Intelligence Virtual Agents specifically in the domain of computer games, in this thesis is A fully integrated and modular framework for social-affect-aware game design complete with the computational models for social interaction with game companions. Several games have been built in several scenarios with simple social interactions between players and the game companions using the framework and computational models proposed to explore the opportunities of the framework and models. Finally, this thesis also presents some scenarios for data collections to construct interaction rules for game companions.
14
Ignace, Richard, Mark Giroux, and Donald Luttermoser. "Radio Emission from Substellar Companions of Evolved Cool Stars." Digital Commons @ East Tennessee State University, 2010. https://dc.etsu.edu/etsu-works/6262.
Full textAbstract:
A number of substellar companions to evolved cool stars have now been reported. Cool giants are distinct from their progenitor main-sequence low-mass stars in a number of ways. First, the mass loss rates of cool giant stars are orders of magnitude greater than for the late-type main-sequence stars. Secondly, on the cool side of the Linsky–Haisch ‘dividing line’, K and M giant stars are not X-ray sources, although they do show evidence for chromospheres. As a result, cool star winds are largely neutral for those spectral types, suggesting that planetary or brown dwarf magnetospheres will not be effective in standing off the stellar wind. In this case, one expects the formation of a bow shock morphology at the companion, deep inside its magnetosphere. We explore radio emissions from substellar companions to giant stars using (a) the radiometric Bode's law and (b) a model for a bow shock morphology. Stars that are X-ray emitters likely have fully ionized winds, and the radio emission can be at the milli-Jansky level in favourable conditions. Non-coronal giant stars produce only micro-Jansky level emissions when adjusted for low-level ionizations. If the largely neutral flow penetrates the magnetosphere, a bow shock results that can be strong enough to ionize hydrogen. The incoherent cyclotron emission is sub-micro-Jansky. However, the long wavelength radio emission of Solar system objects is dominated by the cyclotron maser instability (CMI) mechanism. Our study leads to the following two observational prospects. First, for coronal giant stars that have ionized winds, application of the radiometic Bode's law indicates that long wavelength emission from substellar companions to giant stars may be detectable or nearly detectable with existing facilities. Secondly, for the non-coronal giant stars that have neutral winds, the resultant bow shock may act as a ‘feeder’ of electrons that is well embedded in the companion's magnetosphere. Incoherent cyclotron emissions are far too faint to be detectable, even with next generation facilities; however, much brighter flux densities may be achievable when CMI is considered.
15
Oppenheimer, Ben R. Kulkarni S. R. "Direct detection of brown dwarf companions of nearby stars /." Diss., Pasadena, Calif. : California Institute of Technology, 1999. http://resolver.caltech.edu/CaltechETD:etd-09122006-131150.
Full text
16
Apai, Dániel. "Exploring the environment of young stars disks, companions and clusters /." [S.l. : s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=971655243.
Full text
17
Antoniadis, Ioannis [Verfasser]. "Multi-wavelength studies of pulsars and their companions / Ioannis Antoniadis." Bonn : Universitäts- und Landesbibliothek Bonn, 2013. http://d-nb.info/1045276693/34.
Full text
18
Lasch, Carolyn. "Personality and Creativity Correlates in Adults with Childhood Imaginary Companions." Scholarship @ Claremont, 2015. http://scholarship.claremont.edu/scripps_theses/669.
Full textAbstract:
A few studies have demonstrated differences in various personality attributes and creative abilities in children with imaginary companions. This study examined how recalled childhood engagement with an imaginary companion correlates with adult personality and creativity measures. It was hypothesized that creation of childhood imaginary companions would be positively correlated with adult creativity, but that this relationship would be mediated by certain personality attributes such as openness to experiences and extraversion. Other details of the imaginary companion experiences were also investigated. Two hundred and forty-six participants were recruited online to answer questions related to their personality and creativity, as well as any remembered imaginary companion experiences. Results indicated that the presence of a childhood imaginary companion was related to an individual’s openness to experience, but that the roles an imaginary companion played for its creator related to adult personality attributes more. These results suggest that further analyses of different roles and types of imaginary companions can help further explore why certain types of imaginary companions are created, and how their presence may impact developmental processes that influence their creators’ personality and creativity in adulthood.
19
Ali, Muhammad. "Contribution to decisional human-robot interaction: towards collaborative robot companions." Phd thesis, INSA de Toulouse, 2012. http://tel.archives-ouvertes.fr/tel-00719684.
Full textAbstract:
L'interaction homme-robot arrive dans une phase intéressante ou la relation entre un homme et un robot est envisage comme 'un partenariat plutôt que comme une simple relation maitre-esclave. Pour que cela devienne une réalité, le robot a besoin de comprendre le comportement humain. Il ne lui suffit pas de réagir de manière appropriée, il lui faut également être socialement proactif. Pour que ce comportement puis être mise en pratique le roboticien doit s'inspirer de la littérature déjà riche en sciences sociocognitives chez l'homme. Dans ce travail, nous allons identifier les éléments clés d'une telle interaction dans le contexte d'une tâche commune, avec un accent particulier sur la façon dont l'homme doit collaborer pour réaliser avec succès une action commune. Nous allons montrer l'application de ces éléments au cas un système robotique afin d'enrichir les interactions sociales homme-robot pour la prise de décision. A cet égard, une contribution a la gestion du but de haut niveau de robot et le comportement proactif est montre. La description d'un modèle décisionnel d'collaboration pour une tâche collaboratif avec l'humain est donnée. Ainsi, l'étude de l'interaction homme robot montre l'intéret de bien choisir le moment d'une action de communication lors des activités conjointes avec l'humain.
20
Matthews, Elisabeth Christina. "Direct imaging of planetary mass companions and circumstellar debris disks." Thesis, University of Exeter, 2018. http://hdl.handle.net/10871/34654.
Full textAbstract:
Gas giant planets at the widest separations can only be identified via high contrast imaging. Studying these planets allows us to understand the full architecture of exoplanetary systems, and to probe whether these objects are formed via a core accretion or a disk instability process. The high contrast imaging method is also unique in that stellar and planetary light are spatially separated, allowing detailed spectroscopic analysis of detected companions with a comparatively low observational cost. It has long been predicted that giant planets and circumstellar debris dust are linked, with planets such as β -Pictoris b and HD 106906 b residing in highly dusty systems. Of particular interest are those systems where the dust morphology is suggestive of the presence of planets: for example, in both the HR~8799 and HD~95086 systems one or more planets have been found in the gap between two belts of debris dust. Even the solar system is in this configuration, with the Asteroid and Kuiper belts enclosing the four gas and ice giants. In this work we carry out two surveys, where we search for planets using high contrast imaging. We survey both (a) 24 targets with the highest levels of circumstellar debris dust and (b) 20 targets with circumstellar disks, where infrared analysis suggests that the debris disk is carved into two distinct belts. For the second group of targets, the gap between the debris belts indicates the expected position of a giant planet within the system. Even further, we place constraints on the mass of the inferred planets in the system, based on the measured properties of the debris dust: the time taken to clear a gap in a debris disk is related to the mass of planets present. We can therefore calculate a minimum expected mass for planets in any particular system, based on the properties of the debris gap and the age of the system. These dynamical limits are complementary to observational limits we place on each system using high contrast imaging at the Very Large Telescope (VLT). These high contrast imaging surveys are carried out with the SPHERE instrument, a state-of-the-art high contrast imager, and we are typically sensitive to planets of a few Jupiter masses. These observational limits, along with the dynamical reasoning, allow tight constraints to be placed on the inferred planetary systems even when no planets are detected. While undertaking these surveys, we have made several new discoveries. Three of the debris disks were imaged in scattered light: two of these had never previously been resolved, while the third had been resolved with the Hubble Space Telescope at lower resolution and larger spatial scales. We detected two M-type companions to dusty targets, and a stellar binary with a moderate mass ratio. Finally, we identified a complex hierarchical quadruple stellar system, in which two of the four stars host debris disks based on their infrared excess.
21
Sarabia, Del Castillo Miguel. "User modelling for robotic companions using stochastic context-free grammars." Thesis, Imperial College London, 2015. http://hdl.handle.net/10044/1/29421.
Full textAbstract:
Creating models about others is a sophisticated human ability that robotic companions need to develop in order to have successful interactions. This thesis proposes user modelling frameworks to personalise the interaction between a robot and its user and devises novel scenarios where robotic companions may apply these user modelling techniques. We tackle the creation of user models in a hierarchical manner, using a streamlined version of the Hierarchical Attentive Multiple-Models for Execution and Recognition (HAMMER) architecture to detect low-level user actions and taking advantage of Stochastic Context-Free Grammars (SCFGs) to instantiate higher-level models which recognise uncertain and recursive sequences of low-level actions. We discuss a couple of distinct scenarios for robotic companions: a humanoid sidekick for power-wheelchair users and a companion of hospital patients. Next, we address the limitations of the previous scenarios by applying our user modelling techniques and designing two further scenarios that fully take advantage of the user model. These scenarios are: a wheelchair driving tutor which models the user abilities, and the musical collaborator which learns the preferences of its users. The methodology produced interesting results in all scenarios: users preferred the actual robot over a simulator as a wheelchair sidekick. Hospital patients rated positively their interactions with the companion independently of their age. Moreover, most users agreed that the music collaborator had become a better accompanist with our framework. Finally, we observed that users' driving performance improved when the robotic tutor instructed them to repeat a task. As our workforce ages and the care requirements in our society grow, robots will need to play a role in helping us lead better lives. This thesis shows that, through the use of SCFGs, adaptive user models may be generated which then can be used by robots to assist their users.
22
Coker, Carl. "The Frequency of Binary Companions Around KELT Planet Host Stars." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu149978799487883.
Full text
23
Ali, Muhammad. "Contributions to decisional human-robot interaction : towards collaborative robot companions." Thesis, Toulouse, INSA, 2012. http://www.theses.fr/2012ISAT0003/document.
Full textAbstract:
L'interaction homme-robot arrive dans une phase intéressante ou la relation entre un homme et un robot est envisage comme 'un partenariat plutôt que comme une simple relation maitre-esclave. Pour que cela devienne une réalité, le robot a besoin de comprendre le comportement humain. Il ne lui suffit pas de réagir de manière appropriée, il lui faut également être socialement proactif. Pour que ce comportement puis être mise en pratique le roboticien doit s'inspirer de la littérature déjà riche en sciences sociocognitives chez l'homme. Dans ce travail, nous allons identifier les éléments clés d'une telle interaction dans le contexte d'une tâche commune, avec un accent particulier sur la façon dont l'homme doit collaborer pour réaliser avec succès une action commune. Nous allons montrer l'application de ces éléments au cas un système robotique afin d'enrichir les interactions sociales homme-robot pour la prise de décision. A cet égard, une contribution a la gestion du but de haut niveau de robot et le comportement proactif est montre. La description d'un modèle décisionnel d'collaboration pour une tâche collaboratif avec l'humain est donnée. Ainsi, l'étude de l'interaction homme robot montre l'intéret de bien choisir le moment d'une action de communication lors des activités conjointes avec l'humainHuman Robot Interaction is entering into the interesting phase where the relationship with a robot is envisioned more as one of companionship with the human partner than a mere master-slave relationship. For this to become a reality, the robot needs to understand human behavior and not only react appropriately but also be socially proactive. A Companion Robot will also need to collaborate with the human in his daily life and will require a reasoning mechanism to manage thecollaboration and also handle the uncertainty in the human intention to engage and collaborate. In this work, we will identify key elements of such interaction in the context of a collaborative activity, with special focus on how humans successfully collaborate to achieve a joint action. We will show application of these elements in a robotic system to enrich its social human robot interaction aspect of decision making. In this respect, we provide a contribution to managing robot high-level goals and proactive behavior and a description of a coactivity decision model for collaborative human robot task. Also, a HRI user study demonstrates the importance of timing a verbal communication in a proactive human robot joint action
24
Jabali, Fuad. "A study of the Companions of the Prophet : geographical distribution and political alignments." Thesis, McGill University, 1999. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=36022.
Full textAbstract:
This dissertation deals with two aspects of the history of the Companions of the Prophet: the pattern of their geographical distribution and their political alignments---taking as its test case the Battle of S&dotbelow;iffin. Based on biographical dictionaries of the Companions written by selected Traditionists (i.e., Ibn Sa`d, Ibn `Abd al-Barr, Ibn al-Athir, al-Dhahabi and Ibn H&dotbelow;ajar), and on the Traditionist definition of what constitutes a Companion, an attempt will be made to identify on the one hand the Companions who settled in Iraq, Syria and Egypt, and on the other those Companions whose loyalties during the Battle of S&dotbelow;iffin are known. Based on an analysis of the background of the Companions appearing in each of these groups and on a comparison between the two, it is argued that religious ideals played a significant role both in the Companions' movements after the death of the Prophet and in their behavior during the Battle of S&dotbelow;iffin.
25
Mogas-Soldevila, Laia. "New design companions opening up the process through self-made computation." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/82271.
Full textAbstract:
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Architecture, 2013.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 73-75).
This thesis is about man and machine roles in the early conception of designs where it investigates computational methods that support creativity and surprise. It discusses the relationship between human and digital medium in the enterprise of Computer-Aided Design', and Self-Made Computation to empower the designer as driver of digital processes taking the computer as an active collaborator, or a sharp apprentice, rather than a master. In a design process tool personalization enables precise feedback between human and medium. In the field of architecture, every project is unique, and there are as many design workflows as designers. However current off-the-shelf design software has an inflexible built-in structure targeting general problem-solving that can interfere with non-standard design needs. Today, those with programming agility look for customized processes that assist early problem-finding instead of converging solutions. Contributing to alleviate software frustrations, smaller tailor-made applications prove to be precisely tailored, viable and enriching companions in certain moments of the project development. Previous work on the impact of standardized software for design has focused on the figure of the designer as a tool-user, this thesis addresses the question from the vision of the designer as a tool-maker. It investigates how self-made software can become a design companion for computational thinking - observed here as a new mindset that shifts design workflows, rather than a technique. The research compares and diagrams designer-toolmaker work where self-made applets where produced, as well as the structures in the work of rule-maker artisans. The main contributions are a comparative study of three models of computer-aided design, their history and technical review, their influence in design workflows and a graphical framework to better compare them. Critical analysis reveals a common structure to tailor a creative and explorative design workflow. Its advantages and limitations are exposed to guide designers into alternative computational methods for design processes. Keywords: design workflow; computation; applets; self-made tools; diagrams; design process; feedback; computers; computer-assisted-design
by Laia Mogas-Soldevila.
S.M.
26
Sugarman, Sophie. "An investigation into parents' attitudes to their children having imaginary companions." Thesis, University College London (University of London), 2013. http://discovery.ucl.ac.uk/10017997/.
Full textAbstract:
Imaginary companions (ICs) are a relatively common feature of childhood, yet the views of parents regarding their children's creation of and engagement with ICs are relatively unexplored. This study explored the attitudes of parents towards ICs and the factors that relate to variation in views. This study is comprised of two phases. Phase 1 examined the views of mothers and fathers of primary school aged children using a self-completion questionnaire. 228 mothers and 31 fathers participated. Of these 259 parents, 63 had a child with a current or previous IC and 196 had a child without an IC. Phase 2 further examined the views of 12 mothers who had all experienced the phenomenon with their children, using semi-structured interviews. Results indicated that in general, parents held mainly positive or neutral views of ICs. They perceived there to be both advantages and disadvantages for their child, they had some concerns, and would be most inclined to ignore the behaviour. Context was found to also relate to the views of parents, and they would be more inclined to join in with the pretence in private than in public. Experience of ICs was associated with the views of parents, and parents with experience of ICs consistently reported more positive views for all attitudes measured. Child age was also found to impact on the views of parents, who were all less accepting of their children's ICs with increasing child age. It was hypothesised that parents' views may therefore play a part in older children keeping their ICs a secret from others. Furthermore, religious affiliation was also found to result in some variation in parent views. Mothers interviewed all expressed positive views of their children's IC, identifying a number of developmental benefits afforded to the child and identifying their experience to have been positive, thus positively shaping their views of ICs. Their positive views were however found to be conditional upon a number of factors, including the age of the child, the IC being used appropriately, and there being no negative social impact. Whilst the mothers had few concerns for young children with ICs, their concern was found to grow with increasing child age and the prospect of the IC not disappearing after middle childhood. The implications of the study for educational psychology, education and childcare professionals are discussed.
27
Stevens, Daniel Joseph. "Discovery and Characterization of Hot Stars and their Cool, Transiting Companions." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1531147521265881.
Full text
28
Barnes, Jason Wayne. "Characterizing transiting extrasolar giant planets: On companions, rings, and love handles." Diss., The University of Arizona, 2004. http://hdl.handle.net/10150/290019.
Full textAbstract:
For my Ph.D. research I investigated the prospects for characterizing transiting extrasolar giant planets from their transit lightcurves. Hubble Space Telescope photometry of transiting planet HD209458b revealed that the planet has no moons. Here, I show that tidal orbital evolution of moons limits their lifetimes, and hence that no moons larger than Amalthea in size should survive around HD209458b, consistent with observations. I then calculate the detectability and scientific potential of planetary rings and oblateness. Oblateness will prove difficult to reliably detect, even with the Hubble Space Telescope. However, large Saturn-like ring systems should be easy to find around transiting extrasolar giant planets if such rings exist.
29
Grether, Daniel Andrew Physics Faculty of Science UNSW. "Statistical analyses of extrasolar planets and other close companions to nearby stars." Awarded by:University of New South Wales. School of Physics, 2006. http://handle.unsw.edu.au/1959.4/29182.
Full textAbstract:
We analyse the properties of extrasolar planets, other close companions and their hosts. We start by identifying a sample of the detected extrasolar planets that is minimally affected by the selection effects of the Doppler detection method. With a simple analysis we quantify trends in the surface density of this sample in the Msini-period plane. A modest extrapolation of these trends puts Jupiter in the most densely occupied region of this parameter space, thus suggesting that Jupiter is a typical massive planet rather than an outlier. We then examine what fraction of Sun-like (~ FGK) stars have planets. We find that at least ~25% of stars possess planets when we limit our analysis to stars that have been monitored the longest and whose low surface activity allow the most precise radial velocity measurements. The true fraction of stars with planets may be as large as ~100%. We construct a sample of nearby Sun-like stars with close companions (period < 5 years). By using the same sample to extract the relative numbers of stellar, brown dwarf and planetary companions, we verify the existence of a very dry brown dwarf desert and describe it quantitatively. Approximately 16% of Sun-like stars have close companions more massive than Jupiter: 11% +- 3% are stellar, <1% are brown dwarf and 5% +- 2% are giant planets. A comparison with the initial mass function of individual stars and free-floating brown dwarfs, suggests either a different spectrum of gravitational fragmentation in the formation environment or post-formation migratory processes disinclined to leave brown dwarfs in close orbits. Finally we examine the relationship between the frequency of close companions and the metallicity of their Sun-like hosts. We confirm and quantify a ~4 sigma positive correlation between host metallicity and planetary companions. In contrast we find a ~2 sigma anti-correlation between host metallicity and the presence of a stellar companion. Upon dividing our sample into FG and K sub-samples, we find a negligible anti-correlation in the FG sub-sample and a ~3 sigma anti-correlation in the K sub-sample. A kinematic analysis suggests that this anti-correlation is produced by a combination of low-metallicity, high-binarity thick disk stars and higher-metallicity, lower-binarity thin disk stars.
30
Walters, Michael L. "The design space for robot appearance and behaviour for social robot companions." Thesis, University of Hertfordshire, 2008. http://hdl.handle.net/2299/1806.
Full textAbstract:
To facilitate necessary task-based interactions and to avoid annoying or upsetting people a domestic robot will have to exhibit appropriate non-verbal social behaviour. Most current robots have the ability to sense and control for the distance of people and objects in their vicinity. An understanding of human robot proxemic and associated non-verbal social behaviour is crucial for humans to accept robots as domestic or servants. Therefore, this thesis addressed the following hypothesis: Attributes of robot appearance, behaviour, task context and situation will affect the distances that people will find comfortable between themselves and a robot. Initial exploratory Human-Robot Interaction (HRI) experiments replicated human-human studies into comfortable approach distances with a mechanoid robot in place of one of the human interactors. It was found that most human participants respected the robot's interpersonal space and there were systematic differences for participants' comfortable approach distances to robots with different voice styles. It was proposed that greater initial comfortable approach distances to the robot were due to perceived inconsistencies between the robots overall appearance and voice style. To investigate these issues further it was necessary to develop HRI experimental set-ups, a novel Video-based HRI (VHRI) trial methodology, trial data collection methods and analytical methodologies. An exploratory VHRI trial then investigated human perceptions and preferences for robot appearance and non-verbal social behaviour. The methodological approach highlighted the holistic and embodied nature of robot appearance and behaviour. Findings indicated that people tend to rate a particular behaviour less favourably when the behaviour is not consistent with the robot’s appearance. A live HRI experiment finally confirmed and extended from these previous findings that there were multiple factors which significantly affected participants preferences for robot to human approach distances. There was a significant general tendency for participants to prefer either a tall humanoid robot or a short mechanoid robot and it was suggested that this may be due to participants internal or demographic factors. Participants' preferences for robot height and appearance were both found to have significant effects on their preferences for live robot to Human comfortable approach distances, irrespective of the robot type they actually encountered. The thesis confirms for mechanoid or humanoid robots, results that have previously been found in the domain of human-computer interaction (cf. Reeves & Nass (1996)), that people seem to automatically treat interactive artefacts socially. An original empirical human-robot proxemic framework is proposed in which the experimental findings from the study can be unified in the wider context of human-robot proxemics. This is seen as a necessary first step towards the desired end goal of creating and implementing a working robot proxemic system which can allow the robot to: a) exhibit socially acceptable social spatial behaviour when interacting with humans, b) interpret and gain additional valuable insight into a range of HRI situations from the relative proxemic behaviour of humans in the immediate area. Future work concludes the thesis.
31
Justin, Daniel P. "Companions in Mission: Practicing the Virtue of Solidarity in Catholic Higher Education." Thesis, Boston College, 2015. http://hdl.handle.net/2345/bc-ir:104227.
Full textAbstract:
Thesis advisor: Jane E. ReganIn Sollicitudo Rei Socialis (1987) Pope John Paul II proposes solidarity as a social virtue for our fragmented yet interdependent world. This lens raises several important questions, but also suggests new opportunities for moral formation and the promotion of institutional charism in the context of Catholic higher education. Employing a praxis methodology, this dissertation begins by analyzing contemporary declines in social capital and the rise of atomistic individualism. The philosophical writings of Alasdair MacIntyre and Charles Taylor help us to understand the moral and spiritual roots of these sociological trends. With the context established, the dissertation next traces the development of solidarity in the Catholic social tradition and attempts to locate the virtue within a Thomistic moral framework. Closely related to both charity and justice, the vision of solidarity advanced is linked to Aristotle's notion of civic friendship, perfected in its origin (the dignity of the human person) and goal (the common good). Constructive proposal are grounded in the concept of social practices developed by MacIntyre and adapted by religious educators and practical theologians. Beyond textual analysis, this dissertation includes a national survey of 87 senior mission leaders at Catholic colleges and universities. From these findings, concrete recommendations are offered for the practices of mission leadership and service-learning
Thesis (PhD) — Boston College, 2015
Submitted to: Boston College. Graduate School of Arts and Sciences
Discipline: Religious Education and Pastoral Ministry
32
Barker, Timothy. "Collaborative learning with affective artificial study companions in a virtual learning environment." Thesis, University of Leeds, 2003. http://etheses.whiterose.ac.uk/15213/.
Full textAbstract:
This research has been carried out in conjunction with Chapeltown and Harehills Assisted Learning Computer School (CHALCS) and local schools. CHALCS is an 'out-of-hours' school in a deprived inner-city community where unemployment is high and many children are failing to meet their educational potential. As the name implies CHALCS provides students with access to computers to support their learning. CHALCS relies on many volunteer tutors and specialist tutors are in short supply. This is especially true for subjects such as Advanced Level Physics with low numbers of students. This research aimed to investigate the feasibility of providing online study skills support to pupils at CHALCS and a local school. Research suggests that collaborative learning that prompts students to explain and justify their understanding can encourage deeper learning. As a potentially effective way of motivating deeper learning from hypertext course notes in a Virtual Learning Environment (VLE), this research investigates the feasibility of designing an artificial Agent capable of collaborating with the learner to jointly construct summary notes. Hypertext course notes covering a portion of the Advanced Level Physics curriculum were designed and uploaded into a WebCT based VLE. A specialist tutor validated the content of the course notes before the ease of use of the VLE was tested with target students. A study was then conducted to develop a model of the kinds of help students required in writing summary notes from the course-notes. Based on the derived process model of summarisation and an analysis of the content structure of the course notes, strategies for summarising the text were devised. An Animated Pedagogical Agent was designed incorporating these strategies. Two versions of the agent with opposing 'Affectations' (giving the appearance of different characters) were evaluated with users. It was therefore possible to test which artificial 'character' students preferred. From the evaluation study some conclusions are made concerning the effect of the two opposite characterisations on student perceptions of the agent and the degree to which it was helpful as a learning companion. Some recommendations for future work are then made.
33
Majors, Karen. "Children's imaginary companions and the purposes they serve : an interpretative phenomenological analysis." Thesis, University College London (University of London), 2009. http://discovery.ucl.ac.uk/10007424/.
Full textAbstract:
The aims of this research were to explore the characteristics and purposes served by imaginary companions (ICs) featuring in the lives of children from a normative sample, as this has rarely been investigated. Semi-structured interviews were carried out with two samples. The first study comprised of five children including both girls and boys aged between five and ten years of age. The second study involved a sample of girls who were homogeneous by age, (eleven years), gender (female) and ethnicity (White, British). A feature of both studies was to explore all the imaginary companions, both current and previous, that each child had had over time. The data was analysed using Interpretative Phenomenological Analysis (IPA) to explore individual and cross case themes. Whilst children acknowledged their imaginary status, the companions presented as real to the children, and particular characteristics of the ICs and features of the child's interaction with their imaginary companions served to foster this illusion. Qualities and characteristics of animal and human imaginary companions were mostly positive. A number of ICs had unfriendly characteristics, though these mostly served a positive purpose for the child. All children were able to say why their imaginary companions were important and special. Some children were able to explain how their ICs met their needs and a range of purposes served were identified. Some children had more than one current imaginary companion (IC) with each IC meeting different needs. Imaginary companions meeting emotional needs were more private in contrast to those who were primarily playmates, or providing wish fulfillment and entertainment. The imaginary companions of the eldest children were mostly unknown to others, or partially concealed in games. This seemed to be in response to the anticipated responses of others. Methodological issues, psychological applications and research implications are discussed.
34
Baker, Amira Val. "High mass x-ray binaries : the donor stars and their compact companions." Thesis, Open University, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.446311.
Full text
35
McElwain, Michael William. "High contrast spectral imaging of sub-stellar companions around nearby young stars." Diss., Restricted to subscribing institutions, 2007. http://proquest.umi.com/pqdweb?did=1495962231&sid=1&Fmt=2&clientId=1564&RQT=309&VName=PQD.
Full text
36
Cocozza, Gabriele <1974>. "A spectroscopic and photometric study of MSP companions in Galactic Globular Clusters." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2008. http://amsdottorato.unibo.it/631/1/Tesi_Cocozza_Gabriele.pdf.
Full textAbstract:
This Thesis is devoted to the study of the optical companions of Millisecond
Pulsars in Galactic Globular Clusters (GCs) as a part of a large project started at
the Department of Astronomy of the Bologna University, in collaboration with other
institutions (Astronomical Observatory of Cagliari and Bologna, University of Virginia),
specifically dedicated to the study of the environmental effects on passive stellar evolution
in galactic GCs.
Globular Clusters are very efficient “Kilns” for generating exotic object, such as
Millisecond Pulsars (MSP), low mass X-ray binaries(LMXB) or Blue Straggler Stars
(BSS). In particular MSPs are formed in binary systems containing a Neutron Star which
is spun up through mass accretion from the evolving companion (e.g. Bhattacharia & van
den Heuvel 1991). The final stage of this recycling process is either the core of a peeled
star (generally an Helium white dwarf) or a very light almos exhausted star, orbiting a very
fast rotating Neutron Star (a MSP). Despite the large difference in total mass between the
disk of the Galaxy and the Galactic GC system (up a factor 103), the percentage of fast
rotating pulsar in binary systems found in the latter is very higher. MSPs in GCs show spin
periods in the range 1.3 ÷ 30ms, slowdown rates ˙P 1019 s/s and a lower magnetic field,
respect to ”normal” radio pulsars, B 108 gauss . The high probability of disruption of a
binary systems after a supernova explosion, explain why we expect only a low percentage
of recycled millisecond pulsars respect to the whole pulsar population. In fact only the
10% of the known 1800 radio pulsars are radio MSPs.
Is not surprising, that MSP are overabundant in GCs respect to Galactic field, since
in the Galactic Disk, MSPs can only form through the evolution of primordial binaries,
and only if the binary survives to the supernova explosion which lead to the neutron star
formation. On the other hand, the extremely high stellar density in the core of GCs,
relative to most of the rest of the Galaxy, favors the formation of several different binary
systems, suitable for the recycling of NSs (Davies at al. 1998).
In this thesis we will present the properties two millisecond pulsars companions
discovered in two globular clusters, the Helium white dwarf orbiting the MSP PSR 1911-5958A in NGC 6752 and the second case of a tidally deformed star orbiting an eclipsing
millisecond pulsar, PSR J1701-3006B in NGC6266
37
Cocozza, Gabriele <1974>. "A spectroscopic and photometric study of MSP companions in Galactic Globular Clusters." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2008. http://amsdottorato.unibo.it/631/.
Full textAbstract:
This Thesis is devoted to the study of the optical companions of Millisecond
Pulsars in Galactic Globular Clusters (GCs) as a part of a large project started at
the Department of Astronomy of the Bologna University, in collaboration with other
institutions (Astronomical Observatory of Cagliari and Bologna, University of Virginia),
specifically dedicated to the study of the environmental effects on passive stellar evolution
in galactic GCs.
Globular Clusters are very efficient “Kilns” for generating exotic object, such as
Millisecond Pulsars (MSP), low mass X-ray binaries(LMXB) or Blue Straggler Stars
(BSS). In particular MSPs are formed in binary systems containing a Neutron Star which
is spun up through mass accretion from the evolving companion (e.g. Bhattacharia & van
den Heuvel 1991). The final stage of this recycling process is either the core of a peeled
star (generally an Helium white dwarf) or a very light almos exhausted star, orbiting a very
fast rotating Neutron Star (a MSP). Despite the large difference in total mass between the
disk of the Galaxy and the Galactic GC system (up a factor 103), the percentage of fast
rotating pulsar in binary systems found in the latter is very higher. MSPs in GCs show spin
periods in the range 1.3 ÷ 30ms, slowdown rates ˙P 1019 s/s and a lower magnetic field,
respect to ”normal” radio pulsars, B 108 gauss . The high probability of disruption of a
binary systems after a supernova explosion, explain why we expect only a low percentage
of recycled millisecond pulsars respect to the whole pulsar population. In fact only the
10% of the known 1800 radio pulsars are radio MSPs.
Is not surprising, that MSP are overabundant in GCs respect to Galactic field, since
in the Galactic Disk, MSPs can only form through the evolution of primordial binaries,
and only if the binary survives to the supernova explosion which lead to the neutron star
formation. On the other hand, the extremely high stellar density in the core of GCs,
relative to most of the rest of the Galaxy, favors the formation of several different binary
systems, suitable for the recycling of NSs (Davies at al. 1998).
In this thesis we will present the properties two millisecond pulsars companions
discovered in two globular clusters, the Helium white dwarf orbiting the MSP PSR 1911-5958A in NGC 6752 and the second case of a tidally deformed star orbiting an eclipsing
millisecond pulsar, PSR J1701-3006B in NGC6266
38
Tahiroglu, Deniz, and Deniz Tahiroglu. "Development and Correlates of Anthropomorphism." Thesis, University of Oregon, 2012. http://hdl.handle.net/1794/12535.
Full textAbstract:
One of the most heavily researched topics of cognitive development concerns children's growing understanding of people's behaviors as reflecting mental states such as beliefs, desires and intentions. Anthropomorphism is the overextension of this conceptual framework, referred to as "theory of mind", to nonhuman animals and inanimate objects. In this dissertation, I investigate the development and correlates of anthropomorphism building on and extending past research with children and adults. In Study 1, I investigated the relation between anthropomorphism, social understanding, and social behaviors that are known to correlate with theory of mind, such as empathy, and prosocial attitudes in a college sample (N = 919). Contrary to my predictions, results showed that anthropomorphism is only weakly related to the measures of social understanding. There was, however, some evidence for a link between anthropomorphism and imaginary companions; individuals who had a history of imaginary companions scored higher on anthropomorphism. In Study 2, I examined the link between theory of mind and anthropomorphism in preschool children. In addition, I investigated the developmental trajectory of anthropomorphism from age 4 to 6 and the relation between anthropomorphism and role play and social preferences. Seventy-four children (36 girls; Mage = 5 years, 5 months; SD = 9 months) took part in this study. In order to assess anthropomorphism in this age group, I used two methods: interview and movie narrative measures. Results revealed no age-related changes in anthropomorphism scores of the children. As in Study 1, I did not find a strong relationship between the theory of mind measures and anthropomorphism. There was, however, more evidence for a link between the interview measure of anthropomorphism and role play, and social preferences of children. Overall, in both studies, theory of mind, the most obvious candidate as a correlate of anthropomorphism, was, at best, not a strong predictor of the anthropomorphism, suggesting the need to rethink how developing knowledge about people is related to the overextension of this knowledge to nonhuman entities. It is possible that a rudimentary understanding of humans is necessary to be able to overextend it, but whether you overextend it might be linked to other factors.
39
Muehlhausen, Beth L. "Dual Degree Programs in Social Work and Divinity: Graduates' Experiences of Journey Companions." Connect to resource online, 2010. http://hdl.handle.net/1805/2208.
Full textAbstract:
Thesis (Ph.D.)--Indiana University, 2010.Title from screen (viewed on July 21, 2010). School of Social Work, Indiana University-Purdue University Indianapolis (IUPUI). Advisor(s): Margaret E. Adamek, Katharine V. Byers, Frank Caucci, Rebecca S. Sloan. Includes vitae. Includes bibliographical references (leaves 118-128).
40
Jabali, Fu'ad. "A study of the Companions of the Prophet, geographical distribution and political alignments." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape9/PQDD_0018/NQ55342.pdf.
Full text
41
Tyers, Theresa Lorraine. "The rebirth of fertility : the Trotula and her travelling companions c. 1200-1450." Thesis, University of Nottingham, 2012. http://eprints.nottingham.ac.uk/14017/.
Full textAbstract:
This thesis examines to what extent women were involved in their own healthcare and that of others, in the late medieval period. It starts from the observation that modem text editing practices often exclude from discussion other widely disseminated texts that formed the 'travelling companions' of a manuscript - in this case particularly the ensemble known as the Trotula. By focusing on one specific text within the manuscript compilations, the diverse and widespread dissemination of women's knowledge of healthcare and the use of vernacular texts have been marginalised. The thesis argues that the consideration of these 'travelling companions' can offer an alternative view of women's involvement in healthcare, despite the seeming female exclusion from the culture of book-learning and the development of professional licensing in the later Middle Ages. The corpus of manuscripts examined is taken from a range of vernacular compilations produced in England, Flanders and Italy, with some discussion of ownership and transmission of these into the Early Modem period. A number of transcriptions and close readings of the contents are used to identify the discrete characteristics of each copy and to track changes that took place during the transmission process. Detailed comparisons demonstrate that conscious, active choices were made in both the adaptation and interpretation of the material being copied. Analysis of these manipulations reveals that the production of vernacular texts enabled easier consultation and use. The manuscripts point to women's continuing engagement with both the texts and the practice of self-care and that, despite the increase in the number of professional male practitioners over the period, women continued to offer advice to others well into the sixteenth century.
42
Burton, Jennifer. "The functions and purpose imaginary companions serve from the perspective of the child." Thesis, Cardiff University, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.555871.
Full text
43
Hogan, Emma. "A direct imaging search for substellar and planetary mass companions around white dwarfs." Thesis, University of Leicester, 2008. http://hdl.handle.net/2381/3955.
Full textAbstract:
Even though the radial velocity technique has detected almost all of the 269 extrasolar planets discovered to date, this method does not directly observe the light from the planet. The ability to directly detect this light would allow spectra of extrasolar planets to be obtained, providing information about their information and evolution through the investigation of their composition and structure. To date, none of the extrasolar planets found using the radial velocity technique have been directly imaged, as these faint companions are too close to their bright parent stars. White dwarfs are intrinsically faint objects and can be upto 10,000 times less luminous than their main sequence progenitors, substantially increasing the probability of directly imaging an extrasolar planet in orbit around them. The Degenerate Objects around Degenerate Objects (DODO) survey aims to obtain a direct image of an extrasolar planet in a wide orbit around a white dwarf. By acquiring J band images of 26 equatorial and northern hemisphere white dwarfs a year or two apart, common proper motion companions to the white dwarfs can be identified. The discovery of such a system could supply new information on the frequency and mass distribution of extrasolar planets around intermediate mass main sequence starts and confirm whether these companions can survive the final stages of stellar evolution. In addition, the direct detection of an extrasolar planet in orbit around a white dwarf would allow the spectroscopic investigation of planets much older than any previously found. Using the 24 white dwarfs in the DODO survey within 20pc, the frequency of substellar companions with effective temperatures > 500K and projected physical separations from the white dwarf between 60-200AU is estimated to be <5%. For the same range of projected physical separations, the frequency of substellar companions with masses >10Mjup is estimated to be<9%.
44
Downes, Edith A. "Spiritual companions for Alzheimers patients and those persons with other forms of dementia." Online full text .pdf document, available to Fuller patrons only, 2002. http://www.tren.com.
Full text
45
UBEIRA, GABELLINI MARIA GIULIA. "THE ROLE OF (SUB-)STELLAR COMPANIONS ON THE DYNAMICAL EVOLUTION OF PROTOPLANETARY DISCS." Doctoral thesis, Università degli Studi di Milano, 2020. http://hdl.handle.net/2434/798394.
Full textAbstract:
The study of planet formation has become progressively more important in the last few years given the great number of diverse exoplanets recently discovered. It is, indeed, only by studying extrasolar planetary systems embedded in their natal (protoplanetary) discs that we can make statistical studies of the range of outcomes of the planet formation process. In particular, the discs that present a cavity (transitional discs) or a gap in the dust radial profile are related to disc
clearing mechanisms by young giant planets.
In this Thesis, we analyze observations taken with the most advanced telescopes (ALMA and VLT/SPHERE) combining multi-wavelength observations to discriminate between different formation processes in systems with disc sub-structures. We provide a general overview on protoplanetary discs and planets/binaries, followed by the description of dust and gas dynamics and thermal disc structure. Moreover, we describe the two most accredited scenarios of planet formation: core accretion and gravitational instability.
In the second part of the Thesis, we present a work on the dust and gas cavity of the disc around CQ Tau observed with ALMA together with thermochemical models and hydro-dynamical simulations, which provide insight on a massive planet responsible for the clearing of such disc structure. Secondly, we describe an analysis done on a survey of 22 Herbig and F/G type stars imaged by SPHERE that confirms that the large near-infrared excess observed in the SEDs of Group I Herbig stars can be explained by the presence of a large gap in their discs. We spatially resolve spirals in HD 100453, HD 100546, CQ Tau; ring-like disc in HD 169142 and HD 141569; and single inclined thin disc in AK Sco and T Cha. We compare the results with ALMA and PDI observations and with simulations. Moreover, we detect and confirm the presence of a novel gravitationally bound companion to the young MWC 297 star. Finally, we describe a novel routine that exploits the known radial variation of stellar artifacts with wavelength together with the spectral slope of the star.
46
小澤, 実. "Rory McTurk(ed.) A Companion to Old Norse-Icelandic Literature and Culture(Blacwell Companions to Literature and Culuture). Oxford: Blackwell 2005, xiii+567 p." バルト=スカンディナヴィア研究会, 2007. http://hdl.handle.net/2237/13995.
Full text
47
Wiggins, Joel. "Exploring the biographical sermon by preaching six messages on the companions of St. Paul." Theological Research Exchange Network (TREN), 1991. http://www.tren.com.
Full text
48
Ginski, Christian [Verfasser], Ralph [Akademischer Betreuer] Neuhäuser, Peter [Akademischer Betreuer] Hauschildt, and Joao [Akademischer Betreuer] Alves. "Orbital motion of substellar companions / Christian Ginski. Gutachter: Ralph Neuhäuser ; Peter Hauschildt ; Joao Alves." Jena : Thüringer Universitäts- und Landesbibliothek Jena, 2013. http://d-nb.info/1033670162/34.
Full text
49
Murdoch, Kaylene A. "A high-precision radial-velocity search for substellar companions to southern solar-type stars." Thesis, University of Canterbury. Astronomy, 1992. http://hdl.handle.net/10092/8073.
Full textAbstract:
A system has been developed at the Mt John University Observatory to enable relative radial velocities of solar-type stars to be obtained with a characteristic random error of 55 m/s. The high radial-velocity precision has been achieved by interfacing a single optical fibre feed between the telescope and spectrograph, which has enabled the spectrograph to be mounted in a thermally and mechanically stable configuration and has virtually eliminated guiding errors.
Using this system, a programme of observation of 29 solar-type stars and 10 giant International Astronomical Union radial-velocity standard stars was carried out over 2.5 years with a view to the detection of low-mass companions to the dwarf stars. One star, HR3220, turned out to have a previously-undiscovered stellar companion but no dwarfs showed obvious radial-velocity variability suggesting the presence of sub-stellar companions, although β Hyi showed a possible variation. This is despite the programme's sensitivity to the discovery of companions of mass 20 M₄ or greater in orbits of periods less than about 8 years (and larger masses in longer period orbits). In contrast, at least half the giant 'standard' stars were variable in radial velocity. Four and possibly five of the giant standards are probably intrinsic (pulsating) red or yellow (Walker et al. 1989) variables. Two further standards, β Aqr and δ Sgr, showed long-period variability suggestive of companions of indeterminable but low mass.
The lack of brown dwarfs observed in this programme is consistent with the results of other recent surveys. High-mass brown dwarfs appear to be rare as companions to stars and are probably rare in the field as well. They are unlikely to contribute significantly to the local mass density. Low-mass brown dwarfs (or high-mass planets) seem to be rare in orbits closer than 10 AU but could yet be found to abound in wider orbits or in the field.
50
Stone, Jordan M., Josh Eisner, Andy Skemer, Katie M. Morzinski, Laird Close, Jared Males, Timothy J. Rodigas, Phil Hinz, and Alfio Puglisi. "L-BAND SPECTROSCOPY WITH MAGELLAN-AO/Clio2: FIRST RESULTS ON YOUNG LOW-MASS COMPANIONS." IOP PUBLISHING LTD, 2016. http://hdl.handle.net/10150/621975.
Full textAbstract:
L-band spectroscopy is a powerful probe of cool low-gravity atmospheres: the P, Q, and R branch fundamental transitions of methane near 3.3 mu m provide a sensitive probe of carbon chemistry; cloud thickness modifies the spectral slope across the band; and H-3(+) opacity can be used to detect aurorae. Many directly imaged gas-giant companions to nearby young stars exhibit L-band fluxes distinct from the field population of brown dwarfs at the same effective temperature. Here we describe commissioning the L-band spectroscopic mode of Clio2, the 1-5 mu m instrument behind the Magellan adaptive-optics system. We use this system to measure L-band spectra of directly imaged companions. Our spectra are generally consistent with the parameters derived from previous near-infrared spectra for these late M to early L type objects. Therefore, deviations from the field sequence are constrained to occur below 1500 K. This range includes the L-T transition for field objects and suggests that observed discrepancies are due to differences in cloud structure and CO/CH4 chemistry.