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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
271

Sleep, Stress, and Sweat: Implications for Client Physiology Prior to Couple Therapy

Rosa, Christina Michelle 01 July 2019 (has links)
Physiological state greatly influences one’s ability to emotionally regulate and connect to a partner in couple therapy. As individuals encounter real or perceived threats in relationships, they are likely to experience sympathetic nervous system (SNS) responses of fight, flight, or freeze, thereby inhibiting the ability to connect with a partner or therapist made possible by the parasympathetic nervous system (PNS). This study, guided by the Polyvagal theory, examines the influence of client sleep, daily stress, and exercise on physiological baseline prior to a couple therapy session. Participants included 23 married couples who attended couple therapy at the Brigham Young University (BYU) Comprehensive Clinic. We examined the influence of client number of awakenings, sleep fragmentation index (SFI), daily stress time, and daily exercise time on measures of physiological baseline which included Galvanic skin response (GSR), respiratory sinus arrhythmia (RSA) and pre-ejection period (PEP) of the left ventricle of the heart. Three multi-level models were conducted to analyze the influence of sleep, stress, and exercise on GSR, RSA, and PEP respectively. Results indicated that daily stress significantly predicts PEP baseline as a measure of SNS fight-or-flight activation. A discussion of potential limitations, recommendations for therapists, and suggestions for future research are included.
272

Effects of Exercise on Clinical Couple Interactions

Simpson, Samantha Karma-Jean 01 December 2018 (has links)
Research has shown that exercise has the potential to improve couple relationships. This study contributes to current literature by examining the associations between exercise, its duration, and its intensity and daily clinical couple interactions. Participants were 22 married couples in a treatment-as-usual setting who completed daily diaries about daily behaviors and marital interactions. Multilevel models were run, and results showed that wives who exercised were more likely to report a negative interaction with their husband that day. When wives exercised longer, both they and their husbands were more likely to report positive interactions that day. Interestingly, if husbands exercised longer on a given day, their wives were less likely to report positive interactions and there was no association between husbands' perception of interactions and their own exercise duration. Finally, we found that when wives exercised more intensely, both she and her husband were less likely to report positive marital interactions. These results have implications for clinicians working with couples in therapy.
273

A Multi-Informant Study of Perceived Parental Conflict and Youth Adjustment among Siblings within Military Families

Quichocho, Davina, Lucier-Greer, Mallory 13 April 2019 (has links)
Purpose: This study utilized the ABCX Model of Family Stress and Coping to examine the role of interparental conflict (IPC) on child adjustment in military families. We investigated how IPC as a stressor (A) relates to the meaning adolescent children assigned to the conflict (C), and how this meaning predicts adjustment outcomes among siblings in the family, reflecting a crisis (X). Methods: Data were collected from 116 families composed of an active-duty military parent, civilian parent, and two adolescent siblings. Parents and both adolescents reported their perception of IPC, and adolescents reported on their own positive adjustment. Results: Only civilian parent reports were related to adolescent sibling perceptions of IPC, and adolescent perceptions of IPC inversely predicted their own adjustment. Discussion: Findings support the importance of adolescent perceptions as a factor in their own outcomes. Results highlight the importance of at-home-caregivers as a potential point of intervention in fostering adjustment.
274

Accepting Influence in Military Couples: Implications for Couple- and Family-Level Outcomes

Peterson, Clairee, Lucier-Greer, Mallory 13 April 2019 (has links)
Gottman identified the phenomenon accepting influence in couple relationships, defining it as the action of letting one’s partner influence their opinions, as well as the approach of being open-minded towards one’s partner. In this study, we examine accepting influence among a dyadic sample of military couples (N=242 couples). We first replicate Gottman’s findings which link accepting influence to couple satisfaction, and then expand this area of research by examining how accepting influence within the couple relationship relates to family-level outcomes based on theoretical underpinnings from systems theory and the spillover hypothesis. To model relationships within and between partners, we utilize an actor-partner interdependence model. Results demonstrate that accepting influence is related to both couple and family satisfaction in military families, although these were primarily actor effects (i.e., perceptions of accepting influence were primarily associated with personal reports of couple and family satisfaction). Implications for practice and research will be discussed.
275

The experiences and narratives of adoptive parents : a constructionist family perspective

Groves, Brett Tiernan 01 1900 (has links)
The study explored the narratives of three adoptive couples. The participants were selected using criterion based convenience and snowball sampling. The adoptive couples’ data was captured through written narratives and/or individual or joint semi-structured interviews. The data was then analysed by means of thematic analysis conducted from the perspective of second order cybernetics. The results note the participants’ experiences of their infertility threatened their functioning as a couple. However, this threat to the couples’ functioning was limited by the adoptions through two means. First, the adoptions limited the couples’ communication about their infertility. Second, the adoptions allowed the couples to continue functioning as a couple dedicated to the goal of becoming parents. Differences between the participant couples’ experiences surrounded their interactions with social workers; their selection of support structures; their interaction with external systems; as well as their anxiety towards the individuation of the adopted child. / Psychology / M.A. (Clinical Psychology)
276

Evaluation of the Seismic Performance Factors for Hybrid Coupled Core Wall Systems with Steel Coupling Beams

Bartole, Dennis 05 October 2021 (has links)
No description available.
277

Industrializace a vývoj obrábění v oblasti výroby jaderných komponent / Industrialization and Development of Machining in Nuclear Components Manufacturing

Kolmačka, Jan January 2019 (has links)
Cílem této práce je rozbor industrializace a vývoje obrábění v oblasti jaderných komponent z hlediska samotného obrábění a také z hlediska CNC obráběcích strojů. Nejprve je vybrán představitel pro danou oblast, Framatome, a dále jsou představeny a analyzovány klíčové obráběcí operace. Následně je navržena obráběcí technologie, která je verifikována pomocí obráběcích testů a metody párování materiálu nástroje a obrobku a je vytvořen model sil při obrábění.
278

Dynamique d’ondes de spin dans des microstructures à base de films de YIG ultra-minces : vers des dispositifs magnoniques radiofréquences / Spin-Wave Dynamics in Microstructures Based on Ultrathin YIG Films : towards Radiofrequency Magnonic Devices

Collet, Martin 21 December 2017 (has links)
Cette thèse porte sur l’étude de la génération, la propagation et la détection d’ondes de spin dans des nanostructures et microstructures élaborées à partir de couches ultra-minces (quelques nanomètres d’épaisseur) de Y₃Fe₅O₁₂ (YIG). Ce travail se trouve à l’interface entre deux thématiques du magnétisme : la magnonique et la spintronique. Grâce aux effets spin-orbite dans des microstrutures YIG|Pt, il a été possible d’étudier et de manipuler la dynamique d’aimantation du YIG, un matériau utilisé de longues dates sous forme de films épais ou billes pour ses très faibles pertes magnétiques. Ce travail ouvre la voie au développement de circuits magnoniques submicroniques soit pour le traitement des signaux hyperfréquences pour les applications télécom soit pour la réalisation de circuits logiques dans la perspective du remplacement de la technologie CMOS (beyond-CMOS). Ce travail repose sur une expertise dans la croissance de films de YIG développée au laboratoire. Les couches ultra-minces de YIG ont été élaborées par ablation laser pulsée. Pour les meilleurs films ayant une épaisseur de 20 nm, la constante d’amortissement de Gilbert caractérisant les pertes des films, estimée par résonance ferromagnétique, est typiquement de α=3x10⁻ 4. Cette avancée cruciale sur l’aspect matériau a ouvert au début de ma thèse un champ de possibilités pour la réalisation et l’étude de dispositifs magnoniques. En effet, la diminution des épaisseurs a permis d’ouvrir le YIG au domaine de la micro/nanofabrication, levant ainsi un verrou technologique vieux de plusieurs décennies. Nous avons donc pu montrer par des mesures inductives et optiques que la propagation d’ondes de spin dans des guides d’onde de YIG de 20 nm d’épaisseur pouvait être faite sur plusieurs dizaines de microns. Prouvant que la structuration des films de YIG n’altère pas la propagation des ondes de spin ouvrant la voie vers la réalisation de circuits magnoniques plus complexes. En structurant ces films de YIG pour obtenir des cristaux magnoniques, il est possible de générer une modulation spatiale du potentiel vu par les ondes de spin, se traduisant par l’apparition de bande interdite (ou gap) dans la transmittance de fréquences. L’étude de la propagation des ondes de spin dans un cristal a montré l’apparition d’un gap par des mesures BLS, accompagnée par une augmentation de l’atténuation pour la longueur d’onde de Bragg. Pour la première fois dans des films ultra-minces de YIG, ce gap montre la possibilité de réaliser une fonctionnalité de filtrage fréquentiel. La preuve de concept a été validée pour un cristal magnonique adapté pour l’intégration à des dispositifs magnoniques. Afin de manipuler et exciter la dynamique d’aimantation du YIG, nous avons dans une deuxième partie réalisée des microstructures à base de bicouche YIG|Pt. L’injection d’un courant électrique dans le Pt donne naissance, grâce à l’effet Hall de spin, à une accumulation de spin qui se couple à l’interface avec l’aimantation du YIG et permet ainsi d’exercer un couple de transfert de spin (STT) et de générer une dynamique d’aimantation du YIG. Nous avons mis en évidence la modulation d’un facteur cinq de la longueur d’atténuation des ondes de spin se propageant dans une piste YIG|Pt grâce à l’amplification des ondes de spin par STT. Ce contrôle efficace de l’atténuation s’avère très intéressant pour le transport d’information porté par les ondes de spin, afin d’amplifier ou supprimer les ondes de spin et donc sélectionner l’information transmise. Par ailleurs, au-delà d’un courant critique d’injection, nous avons pu observer des auto-oscillations de l’aimantation du YIG à la fois dans des plots ou des pistes. Ce résultat confirme la possibilité d’exciter électriquement la dynamique d’aimantation du YIG par STT. Une étude rigoureuse de ce régime a été effectuée dans des microdisques YIG|Pt pour déterminer le comportement des auto-oscillations et imager les modes d’ondes de spin excités dans le YIG. / The aim of this thesis is to study the generation, propagation and detection of spin waves in nanostructures and microstrutures based on ultrathin (a few nanometers thickness) Y₃Fe₅O₁₂ (YIG) films. This work is at the interface between two fields of magnetism: magnonics and spintronics. Thanks to spin-orbit effects in YIG|Pt microstructures, it has been possible to study and manipulate YIG magnetization dynamic, a material known and used for a long time as thick films or spheres due to its very low magnetic losses. This work opens the path towards the development of submicronic magnonic circuits either for processing radiofrequency signals of for the realization of spin waves logic devices for a future beyond-CMOS technology. Prior to the present work, a significant efforts have been made in the lab to grow epitaxial nanometer thick YIG films by pulsed laser deposition (PLD). It was possible to reduce the film thickness down to a few nanometers while preserving excellent magnetic properties. For the best YIG films having a thickness of 20 nm, ferromagnetic resonance measurements yield a Gilbert magnetic damping of α=3x10⁻ 4 . This value is comparable to micrometer thick YIG films grown by liquid phase epitaxy (LPE). This important step forward on the material aspect opened new possibilities for the realization of magnonic devices that can have a large impact on the ICT industry. Indeed, microfabrication of YIG is now possible thanks to the advent of high quality nanometer thick YIG films. Thus, we have observed the propagation of spin waves in 20-nm thick, 2.5 µm wide YIG waveguides over large distances using inductive and optical detection. Spin-wave propagation characteristics are not affected by microstructuration opening the path to the reliable design of complex magnonic circuits.By structuring YIG films to obtain magnonic crystals, it is possible to generate spatial modulation of the potential seen by spin waves, resulting in the appearance of gaps in the transmittance in frequency. To do so, magnonic crystals implemented in form of microscopic waveguides whose width is periodically varied, were fabricated. The study of spin-wave propagation showed the appearance of a gap accompanied by an increase of the spin-wave attenuation length due to Bragg reflection. For the first time in ultrathin YIG films, this gap shows the possibility to realize radiofrequency filtering. In order to manipulate and excite YIG magnetization dynamics, we have designed YIG|Pt microstructures either stripes or microdisks. Thanks to the spin Hall effect, an electrical current passing in Pt generates a transverse spin accumulation coupled at the interface to the YIG’s magnetization making it possible to exert spin transfer torque (STT). We have highlighted an efficient modulation, by a factor of five, of the spin-wave attenuation length. This control on the decay constant proves to be very interesting for the transport of information using spin waves as data carriers, in order to be able to amplify or suppress spin waves and to select transmitted information. In addition, beyond a critical current, we have induced auto-oscillations of YIG magnetization, either in stripes of microdisks, confirming the possibility to electrically excite YIG magnetization dynamics using STT. A rigorous study of this nonlinear regime has been carried out in YIG|Pt microdisks to determine auto-oscillations behavior and to observe directly dynamic modes excited in YIG.
279

Adlerian Brief Therapy: Empowering The Individual, The Couple, And The Family

Bitter, James 01 January 2009 (has links)
North American Society of Adlerian Psychology, Pre-Convention workshop, Tucson, Arizona (with Oscar Christensen, Clair Hawes, & Bill Nicoll), June, 2001; 2009; Greek Adlerian Society, Athens, Greece (with Oscar Christensen, Clair Hawes, and Bill Nicoll), March, 2000, February, 1998, May, 1997; Adlerian Training Institute, Boca Raton, Florida, June, 2002, 2000, 1999, 1998, 1997, 1996; ACA Pre-Convention Professional Development Institute, Annual Convention, Orlando, Florida, April, 1997; NASAP International Summer Institute, Boca Raton, Florida (with Oscar Christensen,Clair Hawes, and Bill Nicoll), June, 1995, August, 1994.
280

Edice manželské korespondence Albína Bráfa a Libuše Bráfové / Edition of marital correspondence of Albín Bráf and Libuše Bráfová

Harloff, Petra January 2020 (has links)
The main purpose of the practical section of this thesis is to publish a series of letters of national economist and politician Albín Bráf and his wife Libuše Bráfová, the daughter of František Ladislav Rieger and granddaughter of František Palacký, and to make them accessible in form of historical edition. This popular science edition is marked by years 1882-1888 and is intended for a wide spectrum of readers. The theoretical section of the thesis briefly describes the lives of both public figures starting from birth and continuing by their study years, professional career and to the last years of their lives. The subsequent chapter deals with the development of the couple's relationship since their first meeting to birth of their son Václav, mainly on basis of presented letters, as well as other archival sources, such as archival sources of their relatives and literature on this topic.

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