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Dissertations / Theses on the topic 'Self-potential'
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1
Pettersson, Samuel. "Searching for self-injective planar quiverswith potential." Thesis, Uppsala universitet, Algebra och geometri, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-377523.
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Vichabian, Yervant. "An environment application of self-potential geophysics." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/46086.
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Minsley, Burke J. "Modeling and inversion of self-potential data." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/40863.
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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 2007.This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Includes bibliographical references (p. 235-251).
This dissertation presents data processing techniques relevant to the acquisition, modeling, and inversion of self-potential data. The primary goal is to facilitate the interpretation of self-potentials in terms of the underlying mechanisms that generate the measured signal. The central component of this work describes a methodology for inverting self-potential data to recover the three-dimensional distribution of causative sources in the earth. This approach is general in that it is not specific to a particular forcing mechanism, and is therefore applicable to a wide variety of problems. Self-potential source inversion is formulated as a linear problem by seeking the distribution of source amplitudes within a discretized model that satisfies the measured data. One complicating factor is that the potentials are a function of the earth resistivity structure and the unknown sources. The influence of imperfect resistivity information in the inverse problem is derived, and illustrated through several synthetic examples. Source inversion is an ill-posed and non-unique problem, which is addressed by incorporating model regularization into the inverse problem. A non-traditional regularization method, termed "minimum support," is utilized to recover a spatially compact source model rather than one that satisfies more commonly used smoothness constraints. Spatial compactness is often an appropriate form of prior information for the inverse source problem. Minimum support regularization makes the inverse problem non-linear, and therefore requires an iterative solution technique similar to iteratively re-weighted least squares (IRLS) methods.
(cont.) Synthetic and field data examples are studied to illustrate the efficacy of this method and the influence of noise, with applications to hydrogeologic and electrochemical self-potential source mechanisms. Finally, a novel technique for pre-processing self-potential data collected with arbitrarily complicated survey geometries is presented. This approach overcomes the inability of traditional processing methods to produce a unique map of the potential field when multiple lines of data form interconnected loops. The data are processed simultaneously to minimize mis-ties on a survey-wide basis using either an 12 or 11 measure of misfit, and simplifies to traditional methods in the absence of survey complexity. The 11 measure requires IRLS solution methods, but is more reliable in the presence of data outliers.
by Burke J. Minsley.
Ph.D.
4
Fatemi-Badi, Seyed Mohammad. "Predicting the Self-Heating Potential of Coal." TopSCHOLAR®, 1985. https://digitalcommons.wku.edu/theses/2320.
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Self-heating in coal has been studied for well over one hundred years, yet there is no accurate or reliable method for predicting the potential of certain coals to undergo self-heating. Fires caused by self-heating, and eventually spontaneous combustion, have occurred in the high wall of surface mines, in underground mines, in coal stockpiles, and on trains, barges and ships. Self-heating in coal is brought about through a complex interplay of conditions depending on the specific properties of the coal as well as many external factors involved in the mining and handling of coal.
In a study supported by the United States Department of Transportation and monitored by the United States Coast Guard, data on over 2000 barges of coal was incorporated into a data bank. Results from the evaluation of these data and from a barging study, in which a research crew accompanied a tow of barges from western Kentucky to the New Orleans area, were used to make recommendations to minimize self-heating in barged coal.
An inexpensive adiabatic calorimeter (accelerating rate calorimeter) was constructed and used to obtain supporting
laboratory data on coal samples collected in the barging study. There is very good agreement between the results obtained with the calorimeter concerning the reactivity of coals and susceptibility of the coals to undergo selfheating as would be predicted using chemical and physical data from the data bank.
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Carpenter, Felicity. "Satire and self-help : the satirical potential of the self-help industry." Thesis, Queensland University of Technology, 2005. https://eprints.qut.edu.au/16159/1/Felicity_Carpenter_Thesis.pdf.
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This thesis combines a play, Getting Betterer all the Time, a satire about self-help, and an exegesis examining the possibilities that self-help offers for satire and why. The self-help industry has evolved into a massive social and economical phenomenon. The scope of self-help is constantly expanding, indicating a society of individuals desperate for help in all facets of life. As this movement has become more prevalent, self-help has attracted criticism for the way it thrives on the exploitation of people's insecurities. By playing to people's aspirations, many self-help practitioners have become wealthy, but there is a danger that some self-help products can have a harmful effect on people, and at best give rise to an insufferable hubris. Consequently, we have witnessed a rise in popular texts that spoof the self-help industry. The excesses of the self-help industry make it an easy target for satire. Self-help is well matched to satire's function to provide social commentary by ridicule of targets causing harm to the well-being of society. Self-help is an appropriate subject for satire because of its focus on social behavior such as modern parenting, consumerism and status anxiety. Self-help, in addition to providing these opportunities for social commentary, also offers much comedic potential.
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Carpenter, Felicity. "Satire and Self-help: The Satirical Potential of the Self-help Industry." Queensland University of Technology, 2005. http://eprints.qut.edu.au/16159/.
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This thesis combines a play, Getting Betterer all the Time, a satire about self-help, and an exegesis examining the possibilities that self-help offers for satire and why. The self-help industry has evolved into a massive social and economical phenomenon. The scope of self-help is constantly expanding, indicating a society of individuals desperate for help in all facets of life. As this movement has become more prevalent, self-help has attracted criticism for the way it thrives on the exploitation of people's insecurities. By playing to people's aspirations, many self-help practitioners have become wealthy, but there is a danger that some self-help products can have a harmful effect on people, and at best give rise to an insufferable hubris. Consequently, we have witnessed a rise in popular texts that spoof the self-help industry. The excesses of the self-help industry make it an easy target for satire. Self-help is well matched to satire's function to provide social commentary by ridicule of targets causing harm to the well-being of society. Self-help is an appropriate subject for satire because of its focus on social behavior such as modern parenting, consumerism and status anxiety. Self-help, in addition to providing these opportunities for social commentary, also offers much comedic potential.
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Wolman, Stacey D. "Self-estimates of job performance and learning potential." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26649.
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Thesis (Ph.D)--Psychology, Georgia Institute of Technology, 2009.Committee Chair: Ackerman, Phillip; Committee Member: Catrambone, Richard; Committee Member: James, Lawrence; Committee Member: Kanfer, Ruth; Committee Member: Parsons, Chuck. Part of the SMARTech Electronic Thesis and Dissertation Collection.
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Francis, Carolyn S. "Potential feasibility of contractor self-oversight in the self-reporting of delivery delays." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1996. http://handle.dtic.mil/100.2/ADA316732.
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Shalka, Janine. "Self-Control, Self-Efficacy, and Work Ethic as Potential Factors in Entitlement in Adolescents." ScholarWorks, 2015. http://scholarworks.waldenu.edu/dissertations/1509.
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Narcissism has increased in the past 3 decades. Entitlement is a component of narcissism, and substantial research indicates that entitlement is associated with negative behaviors such as aggression, relationship conflict, incivility, and unreasonable expectations in the workplace, learning environments, and relationships. Despite such findings, factors such as self-control, work ethic, and self-efficacy that might explain the variance in entitlement in adolescents has received little investigation. Social cognitive theory indicates that continuous reciprocal relationships exist between personal, behavioral, and environmental factors. The study employed cross-sectional survey research to gather data from 118 students in Grades 10, 11, and 12 in the United States. A multiple regression was used to investigate whether each of self-control, as measured by the Self-Control Scale; work ethic, as measured by the Multidimensional Work Ethic Profileâ??Short Form; and self-efficacy, as measured by the General Self-Efficacy Scale, explained unique variance in the criterion variable entitlement, as measured by the Psychological Entitlement Scale, and a correlational analysis was used to examine the relationships between the variables. Self-control and work ethic displayed statistically significant negative correlations with entitlement, and each explained unique variance in entitlement. Self-efficacy was not a predictor of entitlement. The findings indicate that parents, teachers, and practitioners should design interventions aimed to increase work ethic and increase self-control to curb entitlement and its negative effects.
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Nahlik, Brady J. "On a Potential New Measurement of the Self-Concept." The Ohio State University, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu1610092728212115.
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Zhang, Jiazuo. "Self-potential during multiphase flow in complex porous media." Thesis, Imperial College London, 2017. http://hdl.handle.net/10044/1/48479.
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The rock pore space in many subsurface settings is saturated with water and one or more immiscible fluid phases; examples include non-aqueous-phase liquids (NAPLs) in contaminated aquifers, supercritical CO2 during sequestration in deep saline aquifers, the vadose zone, and hydrocarbon reservoirs. Self-potential (SP) methods have been proposed to monitor multiphase flow in such settings. However, to properly interpret and model these data requires an understanding of the saturation dependence of the streaming potential. This study presents a methodology to determine the saturation dependence of the streaming potential coupling coefficient and streaming current charge density in unsteady-state drainage and imbibition experiments and applies the method to published experimental data. Unsteady-state experiments do not yield representative values of coupling coefficient and streaming current density (or other transport properties such as relative permeability and electrical conductivity) at partial saturation because water saturation within the sample is not uniform. An interpretation method is required to determine the saturation dependence of coupling coefficient and streaming current density within a representative elementary volume with uniform saturation. The method makes no assumptions about the pore-space geometry. We also applied pore network models that can capture the distribution of fluids and electrical charge in real complex porous media to investigate and quantify streaming potential signals during multiphase flow at the pore level. The network modelling results were tested against the interpreted data and experimental data of Estaillades carbonate and St. Bees sandstone, which provided reliable pore-scale explanations of the experimental observations. The results presented here can be used to help interpret SP measurements obtained in partially-saturated subsurface settings.
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Jones, Beth Ann. "Self-organised FePt arrays : their potential as magnetic recording media." Thesis, University of York, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.434010.
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Walden, Rachel R., Nakia J. Woodward, and Emily C. Weyant. "Potential Harms of the Quantified Self: Provider Knowledge and Practices." Digital Commons @ East Tennessee State University, 2016. https://dc.etsu.edu/etsu-works/8833.
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Chapman, Lauren Elizabeth. "Self-Esteem Among Potential Greek Members: A Pre-Post Design." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/31724.
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Mental health is an important part of college studentsâ experiences, and more administrators are paying attention to mental health issues (Cooper, 2000; Kitzrow, 2003). Self-esteem is central to mental health (Kittleson, 1989), and can be attributed to social situations, especially those that deal with rejection (Bednar, Wells, & Peterson, 1989; Caunt, 2003; Eisenberger & Lieberman, 2004; Steffenhagen & Burns, 1987). Sorority recruitment is an event that includes rejection (National Panhellenic Conference, n.d.), and may negatively affect self-esteem.
The purpose of this study was to determine how recruitment affects the self-esteem of participants. First, this study sought to determine if self-esteem changes during recruitment for two groups of Potential Members (PMs): those who complete recruitment (persistent PMs) and those who withdraw (withdrawn PMs). Second, this study investigated how self-esteem differed at the start and end of recruitment between these groups.
The sample included 336 potential sorority members at a large state institution. Data were collected by administering the Rosenberg Self-Esteem Scale (Rosenberg, 1979) twice: once before recruitment, and again when the PM either withdrew or completed the process.
The results of the study indicate a significant change in self-esteem during recruitment. The persistent PMs experienced an increase in self-esteem; the withdrawn PMs experienced a drop in self-esteem. Also, there was a difference between the self-esteem levels of the two groups at the start of recruitment; the withdrawn PMs had a higher self-esteem than the persistent PMs. There was no difference in self-esteem at the end of the recruitment process.Master of Arts
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Sheffer, Megan Rae. "Forward modelling and inversion of streaming potential for the interpretation of hydraulic conditions from self-potential data." Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/235.
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The self-potential method responds to the electrokinetic phenomenon of streaming potential and has been applied in hydrogeologic and engineering investigations to aid in the evaluation of subsurface hydraulic conditions. Of specific interest is the application of the method to embankment dam seepage monitoring and detection. This demands a quantitative
interpretation of seepage conditions from the geophysical data.
To enable the study of variably saturated flow problems of complicated geometry, a three-dimensional finite volume algorithm
is developed to evaluate the self-potential distribution resulting from subsurface fluid flow. The algorithm explicitly calculates
the distribution of streaming current sources and solves for the self-potential given a model of hydraulic head and prescribed distributions of the streaming current cross-coupling conductivity and electrical resistivity. A new laboratory apparatus is developed to measure the streaming potential coupling coefficient
and resistivity in unconsolidated soil samples. Measuring both of these parameters on the same sample under the same conditions
enables us to properly characterize the streaming current cross-coupling conductivity coefficient. I present the results of a laboratory investigation to study the influence of soil and fluid parameters on the cross-coupling coefficient, and characterize this property for representative well-graded embankment soils. The streaming potential signals associated with preferential seepage through the core of a synthetic embankment dam model are studied using the forward modelling algorithm and measured electrical properties to assess the sensitivity of the self-potential method in detecting internal erosion. Maximum self-potential anomalies are shown to be linked to large localized
hydraulic gradients that develop in response to piping, prior to any detectable increase in seepage flow through the dam. A linear
inversion algorithm is developed to evaluate the three-dimensional distribution of hydraulic head from self-potential data, given a known distribution of the cross-coupling coefficient and electrical resistivity. The inverse problem is solved by
minimizing an objective function, which consists of a data misfit that accounts for measurement error and a model objective function that incorporates a priori information. The algorithm is suitable
for saturated flow problems or where the position of the phreatic surface is known.
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Pan, Fang. "Self-assembly of amphiphilic peptides and their potential in gene transfection." Thesis, University of Manchester, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.496700.
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The surfactant-like peptides are amphiphillic molecules containing polar or charged amino acids moieties as hydrophilic heads and non-polar ammo acids as hydrophobic tails, their surfactant-like amphiphilicity is attractive to a wide range of biotechnological applications including regenerative medicine and drug delivery. Short and designed peptides are easy to synthesise. They are becoming increasingly popular for self-assembly studies as model systems. It is of bith fundamental and practical significance to explore how these designed peptide molecules aggregate in solution and adsorb at the interface.
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Salem, Talal Husain Ibrahem. "INVESTIGATION OF PILE SETUP CORRELATIONS WITH SOIL PROPERTIES." Cleveland State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=csu15037910383013.
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Wedisinghe, Lilantha. "The potential for vaginal self sampling to increase participation in cervical screening." Thesis, Queen Mary, University of London, 2014. http://qmro.qmul.ac.uk/xmlui/handle/123456789/8962.
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Aim: To explore potential methods of increasing cervical screening coverage. Methods: Cervical screening defaulters in Dumfries and Galloway were identified in 2012, split into a control (N=64) and 7 intervention groups who were offered multiple screening options including self-collecting a vaginal sample at home. Self-samples were tested for high-risk human papillomavirus (HPV). A total of 3323 were invited to request a kit and 492 were sent a kit directly. Women who declined screening were asked to complete a questionnaire. Colposcopy referrals from defaulters were audited to identify changes over time. Defaulters attending the hospital smear clinic were questioned to ascertain barriers to cervical screening. Results: Among seven intervention groups the proportion responding varied between 32% (25%-38%) and 14% (11%-17%) compared to 6% among controls. One hundred and thirty women were HPV positive on self-sample, 8 of whom had CIN2+ diagnosed. A significantly higher number of defaulters were referred to colposcopy in June-December 2012 (n=51) than in the same period in 2011 (n=17; OR=3.8, 2.1-6.9). Defaulting was more commonly attributed to practical (112/155=72%) than attitudinal barriers (23/115=15%) (RR=4.9, 3.3-8.0). Conclusions: Practical barriers are often the cause of women not attending for cervical screening and offering more options, particularly the option of self- sampling at home, increases screening coverage.
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Byrdina, Svetlana. "Anomalous Self-Potential variations related to activity of Merapi volcano (Central Java)." Paris, Institut de physique du globe, 2004. http://www.theses.fr/2004GLOB0006.
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La thèse est consacrée à l'analyse des données d'une surveillance continue du Potentiel Spontané (PS), obtenues sur le volcan Merapi, dans le but d'identifier les signaux de PS liées à l'activité volcanique. La comparaison dePS avec la météorologie montre que les propriétés les plus manifestes dans les données de PS sont produites par des variations d'infiltration d'eau de pluie et de pression atmosphérique. Les techniques spéciales de traitement des données ont été developpé pour reduire les effets météorologiquies. Pour identifier les signaux associés à l'activité volcanique, les séries temporelles de PS ont été comparées aux données de sismicité large bande. Un rapport statistiquement stable a été trouvé entre les signaux anormaux de PS et la sismicité de periode ultra-longue (ULP). L'occurrence des anomalies de PS liées à la sismicité ULP pourrait être provoquée par l'effet électro-cinétique du flux de fluide dans la proximité du dôme de laveThe thesis is devoted to the analysis of the continuous Self-Potential (SP) monitoring date registered on Merapi volcano, with the purpose to identify related to volcanic activity SP signals. The comparison between SP and meteorolopical parameters shows that the most prominent features in the SP data are produced by rain water infiltration and air pressure. Special techniques of data processing were developed to reduce the meteorological influence on the SP. To identify the signals associated with volcanic activity, the SP time series were compared to broadband seismicity. A statistically stable relationship was found between anomalous SP signals and ultra-long-period (ULP) seismicity with dominant periods <100s. In contrast, the anomalies were not present in ground temperature data nor in SP data recorded 1km from the summit. The occurrence of SP anomalies associated with ULP-seismicity might be caused by the electro-kinetic effect of fluid flow in subsurface near the lava dome
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Peters, Heather J. "A Cultural Analysis of Self-Talk: Its Relationship to Performance and Potential Moderators." Tucson, Arizona : University of Arizona, 2006. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu%5Fetd%5F1466%5F1%5Fm.pdf&type=application/pdf.
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Shaheen, Kemal. "Exploring Dalit participation in learning and the transformative potential of self reflective inquiry." Thesis, Canterbury Christ Church University, 2007. http://create.canterbury.ac.uk/12119/.
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In this thesis I explore barriers to, and opportunities for, the participation in learning (and emancipation) of a profoundly subjugated segment of Indian Society referred to as Dalits. Accounting for approximately 16 per cent of the Indian population (according to the 2001 Census), Dalits have been excluded from education and wider society on the basis of their inferior position in the hierarchical division of society known as the Caste System. A raft of statistics indicate the extent of this exclusion and the disproportionate representation of Dalit children in those who have never been enrolled in school, drop out before completin primary education, or are illiterate. However this thesis is not about numbers and I examine the relevant themes from a different perspective. Drawing on evidence and insights garnered by employing a variety of research techniques (literature review, fieldwork in India, autobiographical episodes and self-reflective inquiry) I examine opportunities for Dalit participation in learning (not just formal schooling) that will stimulate this subjugated people to critically reflect upon the circumstances of their oppression and take action to challenge it. This thesis is, in part, an exploration of the contours of a liberating education. At the heart of this thesis lies an examination of the transformative potential of self-reflective inquiry. I argue that, if conducted sufficiently rigorously, the process of critical self-reflection can lead to a profound transformation in human consciousness and a radical shift in the relationship between Self and Other. I suggest that this insight is pivotal if we are to deepen our understanding of the barriers to, and opportunities for, Dalit emancipation and participation in learning.
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Latif, Elda Surhaida. "Understanding the proliferative and self-renewal potential of different leukaemic stem cell populations." Thesis, University of Newcastle Upon Tyne, 2013. http://hdl.handle.net/10443/1828.
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Although contemporary treatment cures most children with ALL, with survival rates in the region of 90%, treatment outcomes in certain cytogenetic subgroups remain poor. Patients with such abnormalities have a greatly increased risk of relapse and re-treatment responses are poor. Understanding the mechanisms of resistance in these patients is therefore a priority in the search for improvements in chemotherapy. The translocation t(17;19)(q22;p13) is a rare cytogenetic abnormality, which occurs in less than 1% of childhood ALL and is associated with a very poor prognosis and chemotherapy resistance. The translocation results in the fusion of E2A on chromosome 17 with HLF on chromosome 19. It has been commonly assumed that, following relapse, ALL cells will divide more rapidly than at presentation. To test this hypothesis, competitive transplantation studies were performed using paired presentation and relapse samples from a case of t(17;19)-positive ALL in a NSG xenograft mouse model. Surprisingly mice engrafted with the presentation cells survived significantly shorter (p<0.05, logrank test) than those with relapse cells, indicating the aggressiveness and rapid proliferation of presentation cells, while the survival curves of mice engrafted with various proportions of presentation and relapse cells had intermediate levels of survival. Administration of dexamethasone prolonged the survival of mice engrafted with the presentation cells and those with various proportions of cells, with no effect on survival of mice with relapse cells. Flow cytometry analysis showed that a high percentage (70%-95%) of human leukaemic cells engrafted in bone marrow and spleen across all groups tested. RT-PCR amplification identified this t(17;19) case to be a Type 1 E2A/HLF fusion. In order to determine the genes responsible for chemo-insensitivity, whole genome SNP array analysis was performed on the matched presentation and relapse samples which demonstrated deletion of glucocorticoid receptor (NR3C1) gene in relapse cells which is not seen in presentation cells, confirmed by fluorescence in situ hybridisation. This deletion was used to identify the relapse cells (R) in mice engrafted with mixtures of presentation and relapse cells. FISH analysis showed the percentages of presentation cells (P) were higher than the ratios of the cell initially transplanted. In concordance, real-time PCR analysis showed high levels of NR3C1 in all mix cells ratios. These results indicated that presentation cells proliferate more rapidly and outgrow relapse cells in competitive clonal repopulation experiments. Dexamethasone treatment reduced the percentages of presentation cells in all mix populations with high significance (p<0.01, t-test) in the 30%-P+70%-R ratio. Levels of NR3C1 in all mix cell populations were significantly depleted (p<0.05, t-test) by dexamethasone. To be able to physically track the proliferation of leukemic cells populations in vivo and to follow progression of the disease, two lentiviruses pSLIEW (expressing firefly luciferase and green fluorescent protein) and pSRLICW (expressing Renilla luciferase and mCherry fluorescent protein) were generated. pSRLICW was just successfully generated but has not yet been tested. Lentivirus pSLIEW functionality was validated by transducing various leukaemic cell lines. By assessing the percentage of green fluorescence (gfp) cells, transduction efficiencies in SEM and RS4;11 (ALL cell lines) were 45% and 5% respectively, whereas transduction efficiencies in Kasumi-1 and SKNO-1 (AML cell lines) were 72% and 98% respectively, higher than the ALL cell lines. Transduced SEM and Kasumi-1 lines were sorted for higher gfp populations for xenograft purposes. Real time bioluminescence imaging on mice xenografted with sorted transduced SEM cells showed rapid progression of the disease in the systemic while Kasumi-1 cells xenografted in mice produced localised tumours and progressed much slower. These lentiviral-transduced cell lines xenografts have proven the in vivo monitoring capability by real time luminescence imaging. The information gained from this project study provides novel insights into the mechanisms of relapse in childhood ALL. The growth characteristics of the leukaemic blasts should be considered in assigning patients to different therapeutic options.
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Clark, Jonathan. "Screening for Allelopathic Potential and Self Facilitation in Japanese Hops (Humulus japonicus, Cannabaceae)." Thesis, Southern Illinois University at Edwardsville, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10014413.
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Japanese hops (Humulus japonicus) is an introduced species from eastern Asia whose current distribution extends over most of the eastern U.S.A. H. japonicus is capable of rapid growth and can form dense blankets of foliage. It's been observed that native species fare poorly in the presence of H. japonicus. A set of experiments were designed to test for the potential of H. japonicus to produce chemicals that may inhibit germination and growth in its competitors. A standard laboratory germination assay was preformed using extracts from foliar material of H. japonicus testing for inhibition in germination of 3 target species—Festuca rubra, Raphanus sativus, and Lactuca sativa. A field experiment using soils from areas colonized with H. japonicus and adjacent areas where hops was absent was preformed looking for and effect on germination and growth in silver maple (Acer saccharinum). Lastly a laboratory assay was designed using extracts obtained from soils, colonized with H. japonicus and without, investigating the potential for H. japonicus to promote its own germination. The results of the germination assay showed a consistent and significant delay in germination in all target species treated with H. japonicus foliar extract vs. controls. The field trial showed a significant delay in germination in A. saccharinum as well. Humulus japonicus also proved to promote its own germination in soils occupied by H. japonicus vs. controls. These results support the idea that H. japonicus may use allelopathic chemicals to delay or inhibit germination in native competitors while promoting its own success.
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Hase, Hideaki. "Self-Potential Studies for Volcano-Hydrology - Constraints from Field Observations and Laboratory Experiments." 京都大学 (Kyoto University), 2004. http://hdl.handle.net/2433/147824.
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Peters, Heather J. "A Cultural Analysis of Self-Talk: Its Relationship to Performance and Potential Moderators." Diss., The University of Arizona, 2005. http://hdl.handle.net/10150/194325.
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Self-talk, its relationship to performance, and responses to feedback were investigated in European Americans (Eu.A.s; n = 66), newly-arrived East Asians (E.A.s; n = 24), later-arrived E.A.s (n = 44), and Latinos (n = 35). Later-arrived E.A.s had a larger proportion of negative to positive self-talk than Eu.A.s. Regardless of cultural background, a greater proportion of negative self-talk related to poorer performance. All cultural groups perceived the task as more valid after receiving positive vs. negative feedback. Results did not replicate work by Peters and Williams (in press), questioning their concern regarding the use of cognitive interventions with E.A.s. Results suggest that E.A. and Latino groups are not homogenous, findings should not be generalized from one collectivist cultural background to another, negative self-talk can act as an indicator for fear of failure in Latinos, and acculturation in E.A.s influences fear of failure.
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Lin, Crystal Chi-Sheng. "Adult Romantic Attachment Style, Global Self-Esteem, and Specific Self-Views as Predictors of Feedback Preference in Potential Romantic Relationships." DigitalCommons@USU, 2006. https://digitalcommons.usu.edu/etd/6237.
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This study examined how adult romantic attachment (anxiety and avoidance dimensions), global self-esteem, and social and academic self-views relate to one another and how well they predict preference for a specific feedback type (enhancing, verifying, or no feedback) from a potential romantic partner in times of distress. It also investigated the relation between the type of feedback one receives and attraction to the partner who gives that type of feedback. Multiple regression analyses supported some predicted relations between romantic attachment and feedback preference. Neither global self-esteem nor social and academic self-views predicted preference for a particular feedback type, nor did social self-views moderate the relation between attachment and feedback preference. Although global self-esteem was found to moderate the relation between attachment style and feedback preference, the moderation effects were not in the predicted directions. However, academic self-views were found to moderate the relation between attachment and feedback preference. In addition, anxious and avoidant attachment related negatively to global self-esteem, social self-views, and academic self-view. Global self-esteem related positively to both social and academic self-views. Receiving one's preferred feedback predicted attraction to the potential romantic partner who gave that type of feedback. Limitations of the study and direction for future research are discussed.
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Bao, Yuping. "Synthesis, self-assembly, and potential applications of cobalt-based nanoparticles with tailored magnetic properties /." Thesis, Connect to this title online; UW restricted, 2006. http://hdl.handle.net/1773/10596.
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Bellingham, Catherine M. "Self-assembly of recombinant human elastin polypeptides with potential for use in biomaterials applications." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ63592.pdf.
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Tredoux, Chantelle. "The potential of a learning management system to enhance self-directed learning / Chantelle Tredoux." Thesis, North-West University, 2012. http://hdl.handle.net/10394/8290.
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The use of Learning Management Systems (LMSs) in higher education institutions is not a new tendency. Although this is an innovative way of implementing e-learning in the educational process, there are a few problems concerning these systems. Educators tend to apply traditional classroom ideas and pedagogy in computer-supported e-learning environments, assuming that because these environments allow the interaction that we see in the classroom, traditional pedagogy can be used. Although most of the pedagogical principles that apply to the traditional classroom-delivery method also apply to e-learning, the e-environment supports such interactions in a different manner. Traditional pedagogical principles should be adapted to accommodate the e-learning environment and should form the very basis for inclusion of features in LMSs. These principles should be integrated into the LMS where every feature included is accompanied by explicit guidelines on how to use the feature in such a way that it will effect pedagogically sound instruction.
The aim of this study is to determine how an LMS could be used in order to enhance self-directed learning. In order to reach this aim a brief history of SDL was given and a number of SDL models were discussed. These models were analyzed in order to compile a list of guidelines to foster SDL. The first set of guidelines didn’t focus on any specific learning environment and it was necessary to refine these guidelines for an online environment. To be able to refine the guidelines for an online environment, LMSs in general were discussed and a few models for SDL in an online environment were reviewed. The SDL guidelines were further refined for implementation in eFundiTM. eFundiTM is the LMS used at the North-West University, Potchefstroom campus, South Africa. The nature of the AGLE 121 module (a literacy module for all first year students) and the specific functionalities of eFundiTM were discussed and taken in consideration when the final set of guidelines was compiled.
The researcher did an empirical study to gather valid and reliable data. A mixed methods inquiry approach was used to obtain reliable evidence. The population consisted of all the students that were enrolled for the AGLE modules over 2 years. These students were divided into 2 groups, the AGLE 121 in 2010 (237 students) and the AGLE 121 (287 students) in 2011. The questionnaire that was used for the quantitative research in this study was based on the Fisher, King and Taque (2001) SDL readiness scale for nursing education. Semi-structured interviews were conducted with seven participants from each group in order get a better understanding of the data collected from the quantitative research, and to elaborate further on the students’ development of SDL. Findings indicated that the students from the second year of the study did not necessarily improve their SDL-skills. Most of the results from the quantitative data showed small practical significant differences. However, the qualitative data indicated that the SDL skills of the students improved in two of the three factors after they used the newly developed eFundiTM site, in the second year of the study and therefore the researcher is of opinion that the intervention had a positive impact on the students’ SDL skills.Thesis (MEd (Computer Science Education))--North-West University, Potchefstroom Campus, 2012
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Gibson, Kathryn. "The pathogenic potential of endogenous-self reactive CD4 T cells in collagen-induced arthritis." Thesis, King's College London (University of London), 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.313722.
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Ijioma, Amadi. "Closed-loop feedback control of smart wells for production optimisation using self-potential measurements." Thesis, Imperial College London, 2016. http://hdl.handle.net/10044/1/43386.
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Closed-loop 'reactive' feedback control techniques used for smart well optimisation, triggered by changes in flow (such as unwanted water production) measured at the well can increase the net present value (NPV) and mitigate reservoir uncertainty, as opposed to model-based control strategies, which use models that are rarely predictive at their spatial and temporal scales required to identify optimum control actions. However, the drawback faced with closed-loop 'reactive' feedback control is that control actions are only taken after adverse changes of flow occur at the well. We present a modified close-loop 'proactive' feedback inflow control approach based on near-well, downhole measurements of self-potential (SP) and quantify the potential benefit of this approach in different well and reservoir settings during waterflooding or aquifer support production. The measurement of SP signals downhole in production wells is an encouraging technique that can be used to image waterfronts and has the potential of detecting water encroachment tens to hundreds of meters away from the well. SP signals arise in order to preserve electrical neutrality when charge separation arises due to gradients in pressure, temperature and chemical concentration of the reservoir brine phase. These gradient effects are commonly encountered during waterflooding processes and can be assessed numerically to predict the SP generated downhole in oil production wells. The numerical modelling of SP can be used as a cheap alternative to carrying out actual field experiments and serve as a proxy for predicting the SP measurements taken during waterflood production. Hence, a closed-loop 'proactive' feedback control strategy triggered by downhole SP measurements is developed. We use the NPV of the production wells to measure and compare the performance of the closed-loop feedback control in two different synthetic production cases; the first production case is a simple thin oil-column reservoir with production enabled by a single long horizontal well, and the second more realistic SPE Brugge field model, with production enabled by 20 production wells. The results observed are promising, and suggest that closed-loop control on the basis performance of downhole SP feedback can yield increased gains in NPV, by delaying the production of unwanted fluids compared with water-cut monitoring. These gains are also observed even if the reservoir lies outside the range predicted by reservoir models. Finally, we investigate the potential utility of SP monitoring in analogue real field applications. Overall the results are promising and suggest that SP measurements can be useful in making critical decisions in real field exploration and production applications, and other non-oil related fields such as saline intrusion monitoring in coastal aquifers.
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Woodward, Nakia J., Rachel R. Walden, and Emily C. Weyant. "Potential Harms of the Quantified Self: Fitness Tracking and Eating or Obsessive Behavior Disorders." Digital Commons @ East Tennessee State University, 2015. https://dc.etsu.edu/etsu-works/8817.
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Herrington, Stephanie. "Potential gender differences in perceptions of self-concept between male and female juvenile offenders." CSUSB ScholarWorks, 2000. https://scholarworks.lib.csusb.edu/etd-project/1644.
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MAZZONI, GIORGIA. "Self-healing potential and RAP inclusion as sustainable strategies for never-ending bituminous materials." Doctoral thesis, Università Politecnica delle Marche, 2018. http://hdl.handle.net/11566/252978.
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Benefici economico-ambientali incoraggiano l’uso di fresato (RAP), proveniente dalla demolizione di vecchie pavimentazioni stradali, da introdurre nella produzione di nuove miscele. In particolare, riciclare a caldo il RAP permette una riduzione dei costi di produzione e dei problemi di smaltimento, oltre a un risparmio delle risorse naturali, grazie allo sfruttamento della fase sia bituminosa sia litica. Tuttavia, i regolamenti delle agenzie stradali e pubbliche amministrazioni impongono restrizioni sulle percentuali di RAP implementabili (10÷30%) per la scarsa conoscenza dei meccanismi di interazione tra bitume riattivato da RAP e bitume vergine. Assunzioni inaccurate possono causare ammaloramenti prematuri della miscela, come fessurazioni da fatica, data la più severa ossidazione, e conseguente rigidezza, del bitume da RAP rispetto a quello vergine.
In questo contesto, l’attività di dottorato si è posta l’obiettivo di valutare gli effetti causati dal riciclaggio a caldo di alti quantitativi di RAP. Poiché la prestazione in sito di miscele bituminose è strettamente legata alla fase legante e ai suoi costituenti (filler e bitume), la sperimentazione è stata indirizzata all’analisi delle interazioni tra diverse tipologie e dosaggi di bitumi da RAP, rigeneranti e filler. Accanto alla “classica” caratterizzazione reologica, protocolli di prova innovativi sono stati applicati per ottenere un quadro globale del comportamento dei materiali e comprensivo di risposta a fatica, self-healing e tixotropia.
Sulla base delle evidenze sperimentali, l’impiego di un maggior contenuto di RAP è possibile, senza l’insorgenza di effetti dannosi sulla miscela finale, con una corretta progettazione. La tecnica di produzione, stesa e compattazione, la provenienza e le proprietà del RAP e dell’eventuale rigenerante devono essere selezionate opportunamente per migliorare le proprietà della miscela alle basse e intermedie temperature senza comprometterne le prestazioni alle alte temperature.Economic and environmental advantages encourage the use of Reclaimed Asphalt Pavement (RAP), coming from the milling of old pavements, to be introduced in new bituminous mixture. In particular, hot recycling of RAP allows a reduction of production costs and disposal issues as well as natural resources conservation thanks to the exploitation of both bituminous and lytic component. However, regulations of road agencies and public administrations usually impose restrictions on RAP percentages (from 10 to 30%) due to uncertainties concerning the interaction between bitumen released from RAP and virgin bitumen. Inaccurate assumptions on the related effects could lead to mixtures subjected to premature distresses, such as fatigue failure, considering the higher oxidation, and consequently viscosity (stiffness), of aged bitumens if compared to that of virgin bitumens. In this context, the Ph.D research aimed at evaluating the effects caused by hot recycling of high RAP contents. Since it is expected that field performance of bituminous mixtures is mainly led by mastic phase and its components (i.e. filler and bitumen), the experimental study focused on analysing interactions among different types and dosages of RAP bitumens, rejuvenators and fillers. Besides the “classical” rheological characterisation, more innovative tests and analyses were performed in order to get an overall picture of the mechanical behaviour of the materials investigated in terms of fatigue, self-healing and thixotropy. Based on the overall findings, the inclusion of higher RAP contents appears possible, without negatively affecting the final mixture performance, when an appropriate design is considered. Production process, paving technology, source, properties and dosage of RAP and, eventually, rejuvenator need to be properly selected so as to improve low and intermediate temperature properties of the mixture without penalising its high temperature performance.
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Berg, Kristen A. "Neighborhood and Filial Self-Efficacies as Potential Mechanisms of Resilience Against Depressive Symptoms in Adolescence." Case Western Reserve University School of Graduate Studies / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=case1554814870176373.
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DeNunzio, Dustin J. (Dustin James) 1976. "The market for self-storage in Greater Boston : an analysis of facilities, management and potential." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/29765.
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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Urban Studies and Planning, 2003.Includes bibliographical references (leaf 104).
The core objective of this thesis was to undertake a comprehensive study of the Boston-area self-storage market and determine where and what to build in order to achieve the highest profitability. The study begins with a preliminary look at the history of self-storage in the United States and an analysis of the facility and market characteristics of the national self-storage industry. Then, using first-hand data accumulated through site visits, fifty local self-storage facilities in thirteen cities are analyzed. Statistical measures, including hedonic regression analysis, show the particular facility and management characteristics that affect the price per square foot that can be charged for storage unit rents. Based on information regarding national rent and occupancy levels and the field data gathered on local facility and management quality, this study concludes that the market for self-storage in the Boston-area is still young and largely underserved. The regressions showed that population density and closer distances to the Boston central business district tended to yield higher rents per square foot. Additionally, for certain sized units, the quality of security and availability of climate control were significant factors in determining price. While the data identified the most significant variables included in price per square foot for the properties surveyed, the management and facility ratings provided the most important insight into the market. Most of the facilities and managers surveyed received sub par quality ratings. These quality ratings show the current inefficiency in the Boston self-storage market and, along with some favorable market factors, show opportunity for development.
by Dustin J. DeNunzio.
S.M.
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Klompstra, Leonie. "Physical activity in patients with heart failure : motivations, self-efficacy and the potential of exergaming." Doctoral thesis, Linköpings universitet, Avdelningen för omvårdnad, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-130933.
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Background: Adherence to recommendations for physical activity is low in patients with heart failure (HF). It is essential to explore to what extent and why patients with HF are physically active. Self-efficacy and motivation for physical activity are important in becoming more physically active, but the role of self-efficacy in the relationship between motivation and physical activity in patients with HF is unknown. Alternative approaches to motivate and increase self-efficacy to exercise are needed. One of these alternatives might be using exergames (games to improve physical exercise). Therefore, it is important to obtain more knowledge on the potential of exergaming to increase physical activity. The overall aim was to describe the physical activity in patients with HF, with special focus on motivations and self-efficacy in physical activity, and to describe the potential of exergaming to improve exercise capacity. Methods: Study I (n = 154) and II (n = 101) in this thesis had a cross-sectional survey design. Study III (n = 32) was a 12-week pilot intervention study, including an exergame platform at home, with a pretest-posttest design. Study IV (n = 14) described the experiences of exergaming in patients who participated in the intervention group of a randomized controlled study in which they had access to an exergame platform at home. Results: In total, 34% of the patients with HF had a low level of physical activity, 46% had a moderate level, 23% reported a high level. Higher education, higher selfefficacy, and higher motivation were significantly associated with a higher amount of physical activity. Barriers to exercise were reported to be difficult to overcome and psychological motivations were the most important motivations to be physically active. Women had significantly higher total motivation to be physically active. Self-efficacy mediated the relationship between exercise motivation and physical activity; motivation leads to a higher self-efficacy towards physical activity. More than half of the patients significantly increased their exercise capacity after 12 weeks of using an exergame platform at home. Lower NYHA-class and shorter time since diagnosis were factors significantly related to the increase in exercise capacity. The mean time spent exergaming was 28 minutes per day. Having grandchildren and being male were related to more time spent exergaming. The analysis of the qualitative data resulted in three categories describing patients’ experience of exergaming: (i) making exergaming work, (ii) added value of exergaming, (iii) no appeal of exergaming. Conclusion: One-third of the patients with HF had a low level of physical activity in their daily life. Level of education, exercise self-efficacy, and motivation were important factors to take into account when advising patients with HF about physical activity. In addition to a high level of motivation to be physically active, it is important that patients with HF have a high degree of exercise self-efficacy. Exergaming has the potential to increase exercise capacity in patients with HF. The results also showed that this technology might be suitable for some patients while others may prefer other kinds of physical activity.Achtergrond: Het aantal patiënten met hartfalen (HF) dat zich kan houden aan de aanbevolen lichamelijke activiteit is over het algemeen klein. Het is essentieel om te onderzoeken in hoeverre en waarom patiënten met HF lichamelijk actief zijn. Het hebben van self-efficacy (een persoonlijke overtuiging dat hij/zij capabel is om te doen wat nodig is om een taak te volbrengen op een bepaald kwaliteitsniveau) en motivatie voor lichamelijke activiteit is belangrijk om meer lichamelijk actief te worden. Het is echter niet duidelijk wat de rol van self-efficacy is in relatie tot motivatie en lichamelijke activiteit bij patiënten met HF. Alternatieve benaderingen zijn nodig om patiënten te motiveren lichamelijk actiever te zijn en de self-efficacy te verhogen. Een van de mogelijke alternatieven om patiënten met HF te helpen lichamelijk actiever te zijn is de inzet van exergames: computerspellen om fysieke activiteit te bevorderen. Er is tot nu toe geen onderzoek is gedaan naar de inzet van exergaming bij patiënten met hartfalen en de mogelijkheden van exergaming om patiënten te stimuleren tot meer lichamelijke activiteit. Het doel van dit proefschrift is het beschrijven van de lichamelijke activiteit van patiënten met HF met extra aandacht voor de motivatie en self-efficacy ten opzichte van lichamelijke activiteit. Een tweede doel is om inzicht te krijgen in de mogelijkheid om exergaming te gebruiken om de lichamelijke activiteit van patiënten met HF te verhogen. Methode: In dit proefschrift worden gegevens van 4 studies beschreven (studie I-IV). Studie I (n = 154) en II (n = 101) hebben een crosssectioneel survey design. Studie III (n = 32) is een 12 weken durende pilot-interventie studie met een pretest-posttest design waarbij patiënten 12 weken lang een exergame platform thuis konden gebruiken. Studie IV (n = 14) beschrijft de ervaringen van patiënten die deelnamen aan de interventiegroep van een gerandomiseerde studie waarin zij een exergame platform thuis kregen. Resultaten: In totaal hebben 34% van alle patiënten met hartfalen een laag niveau van lichamelijke activiteit, 46% had een matig niveau, en 23% een hoog niveau. Een hoger opleidingsniveau, self-efficacy en motivatie significant werd geassocieerd met een hogere hoeveelheid lichamelijke activiteit. Het bleek dat barrières voor fysieke activiteit moeilijk te overbruggen waren. Met betrekking tot motivatie, bleek dat psychologische motivatie de belangrijkste drijfveer was om fysiek actief te zijn. Verder bleek dat vrouwen een significant hogere motivatie voor fysieke activiteit hebben dan mannen. Een ander belangrijk resultaat was dat self-efficacy de relatie tussen motivatie en lichamelijke activiteit beïnvloedt; motivatie leidt tot een hogere self-efficacy wat leidt tot hogere fysieke activiteit. Met betrekking tot de resultaten van exergaming bleek dat de inspanningscapaciteit van meer dan de helft van de patiënten aanzienlijk was toegenomen na 12 weken gebruik gemaakt te hebben van een exergame platform thuis. Patiënten met een lager NYHA-klasse en een kortere tijd na de diagnose verhogen significant meer hun inspanningscapaciteit. Ook bleek dat het hebben van een partner en kleinkinderen gerelateerd is aan meer tijd besteden aan exergaming. De analyse van de ervaringen van patiënten in de kwalitatieve studie resulteerde in drie categorieën: (i) zorgen dat exergaming werkt, (ii) toegevoegde waarde van exergaming, (iii) geen aantrekking tot exergaming. Conclusie: Een derde van de patiënten met HF heeft een laag niveau van lichamelijke activiteit in hun dagelijks leven. Opleidingsniveau, self-efficacy en motivatie zijn belangrijke factoren om rekening mee te houden bij het geven van advies aan patiënten met HF betreffende fysieke activiteit. Naast een hoge motivatie tot bewegen is het belangrijk dat patiënten met HF een hoog niveau van self-efficacy hebben om fysiek actief te zijn. Exergaming heeft potentie om inspanningscapaciteit bij patiënten met HF te verhogen. Uit de resultaten blijkt ook dat deze techniek geschikt is voor een deel van de patiënten, terwijl een deel van de patiënten wellicht liever andere vormen van lichamelijke activiteit beoefenen.
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Olson, Aaron Edward. "The accreditation-related self-study and its potential for organizational learning| A comparative case study." Thesis, University of Pennsylvania, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10158535.
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Regional accreditation’s major component, the institutional self-study, is a significant learning opportunity for universities that are often too large and complex for any one individual to have a complete picture of its present or future. The self-study is a resource-intensive endeavor with great investigative utility beyond satisfying the requirements of the accrediting body, and yet the systems put in place to conduct it are often discarded and rebuilt from scratch every decennial review. Senge’s Learning Organization model for understanding and fnbuilding organizational learning potential, especially its focus on double-loop learning, suggests that using a self-study as a jumping-off point (as opposed to a hurdle) could provide immediate and long-term benefits to an institution.
The purpose of this study was to investigate the individual and organizational effects of the preparation of a regional accreditation-related self-study at two large research universities. Qualitative case study methods were used for within- and cross-case analysis. Findings centered on how a hierarchical flow of information and a completion-oriented mindset can constrict learning to the scope of the assigned tasks and reduce the potential for continuation of the learning started by the process. This results in a dilemma: either universities should simply satisfy the requirements put forward by accreditors with minimum expenditure of resources, or purposefully approach the self-study as a starting point for an ongoing and self-sustaining change process.
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Kostaki, Evgenia. "The association between work-related potential stressors, self-compassion and perceived stress in IAPT therapists." Thesis, University of Essex, 2018. http://repository.essex.ac.uk/22914/.
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Improving Access to Psychological Therapies (IAPT ) therapists form a relatively new workforce delivering psychological interventions to people with mild to moderate mental health difficulties in often high-volume environments (Department of Health [DOH], 2008c). Emerging research has suggested that working as an IAPT therapist can be a demanding and stressful role (Walket & Percy, 2014 ; Westwood, Morison, Allt, & Holmes, 2017). Work-related stressors have been linked to physical and mental health difficulties (e.g. Bosma, et al., 1997; Stansfeld, Fuhrer, Shipley, & Marmot, 1999) and the financial cost of stress related illness is considerable (Blaug, Kenyon, & Lekhi, 2007). Across the literature stress has been conceptualised in a variety of ways (Cooper, Dewe, & O’Driscoll, 2001). The transactional approach understands stress through the relational processes between the person and the environment (Lazarus, 2006). Self-compassion (Gilbert, 2010a ; Neff, 2003b), a way of self-relating in times of hardship and suffering, has predominately been inversely associated with perceived stress and has been linked to psychological wellbeing (Neff & Costigan, 2014). This quantitative cross-sectional online project explored IAPT therapists’ levels of perceived stress and examined whether self-compassion moderated the relationship between work-related stressors and perceived stress in IAPT therapists. IAPT therapists reported experiencing levels of perceived stress that were higher than the norm. Self-compassion did not moderate the relationship between work-related stressors and perceived stress. Multiple regressions, employed as model cleansing strategies, revealed that work-related stressors and self-compassion are independent predictors of perceived stress in IAPT therapists and that self-compassion is more strongly related to perceived stress than work-related stressors. The study demonstrates the applicability of Lazarus’ (2006) approach in workplace research. The findings are discussed in relation to self-compassion theory (Neff , 2003b) and affective regulation systems (Gilbert, 2006), and are considered in relation to future research and practical implications around workplace wellbeing.
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Kalra, Ashish. "Preparation and Evaluation of Oil-in-Water Self-Nanoemulsifying Systems with Potential for Pulmonary Delivery." University of Toledo Health Science Campus / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=mco1364764383.
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MacAllister, Donald John. "Monitoring seawater intrusion into the fractured UK Chalk aquifer using measurements of self-potential (SP)." Thesis, Imperial College London, 2016. http://hdl.handle.net/10044/1/33350.
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Using laboratory, numerical and field experiments this study investigated whether borehole measurements of self-potential (SP) can be used to monitor seawater intrusion into the fractured UK Chalk aquifer. The SP, a natural voltage, arises in water saturated fractured porous media due to gradients in pressure (electrokinetic (EK) potential) and concentration (exclusion-diffusion (EED) potential), both features of seawater intrusion. An electrode array was installed in a monitoring borehole c.1.7 km from the coast, in Saltdean, East Sussex, and c.1.3 km from an active abstraction borehole. Head fluctuations in the monitoring borehole were controlled by tidal processes and seasonal changes in inland head. SP monitoring over 1.5 years revealed tidal SP signals. The fluctuations (c.600 μV) were two orders of magnitude larger than those observed at an inland site in the same aquifer, near Reading in Berkshire. Numerical simulation, supported by laboratory measurements, of the coupled hydrodynamic and electrical processes in the coastal aquifer suggested that the EK potential generated by tidal processes was one order of magnitude too small to be responsible for the tidal SP fluctuations. Instead, SP was caused by the EED potential that arose due to the concentration gradient between groundwater and seawater across the saline front (i.e. the 1000 mg/l isoline) some distance from the borehole. The saline front moved through a fracture at the base of the borehole in response to tides. A vertical SP gradient (c.0.22 mV/m), only present in the coastal borehole, was also observed. Modelling suggested that the gradient was due to the close proximity of the saline front (c.4 m) below the borehole and was caused by the EED potential. In August 2013 and 2014, tides and a decline in inland head caused saline water to enter the borehole. Fluid electrical conductivity logging showed that entry was via the fracture. Prior to each occurrence of saline breakthrough, an increase in the SP of c.300 μV was observed, commencing c.7 days before saline water was detected in the borehole. Although this study focused on a monitoring borehole, SP arrays could be installed in abstraction boreholes. The results suggest that SP monitoring may be used to provide early warning of saline water breakthrough, allowing for improved management of groundwater resources in coastal aquifers.
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Taylor, Nick. "Understanding the psychosocial experience of vitiligo in understudied populations : the potential for psychosocial self-help." Thesis, University of Sheffield, 2013. http://etheses.whiterose.ac.uk/4763/.
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Medrano, Karla. "THE RELATIONSHIP BETWEEN WORKLOAD AND COGNITIVE OVERLOAD: SELF-EFFICACY, PERFECTIONISM, AND RESILIENCE AS POTENTIAL MODERATORS." CSUSB ScholarWorks, 2015. https://scholarworks.lib.csusb.edu/etd/241.
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The present study investigated whether there is a relationship between workload and cognitive overload with self-efficacy, perfectionism, and psychological resilience as possible moderators. Cognitive Load Theory states that individuals have a finite amount of working memory. When the working memory load has reached its maximum, individuals experience cognitive overload. Employees with a higher workload receive higher amounts of information, increasing their cognitive load, thus being more likely to reach cognitive overload. However, self-efficacious individuals, perfectionists, and resilient individuals are more motivated to reach their goals and will persevere despite obstacles. Therefore, I proposed that perceived workload and perceived cognitive overload would be correlated and that self-efficacy, perfectionism, and resilience would moderate that relationship. Using a web-based questionnaire, 278 adults working at least 25 hours per week were given a series of self-report measures about their perceived workload, cognitive overload, self-efficacy, perfectionism, and resilience. Workload was found to be positively correlated with cognitive overload, but self-efficacy, perfectionism, and resilience did not moderate the relationship between workload and cognitive overload. Subsequent analyses provide limited support that level of education moderates the workload-cognitive overload relationship. As personal characteristics do not moderate the relationship between workload and cognitive overload, management in organizations will want to explore different ways to affect the perceived workload of their employees.
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Rezaeiaghdam, Atae. "The potential of online health communities in empowerment and self-management of people with diabetes." Thesis, Queensland University of Technology, 2022. https://eprints.qut.edu.au/231220/1/Atae_Rezaeiaghdam_Thesis.pdf.
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This thesis investigates the role of online health communities (OHCs) in empowering people living with diabetes. In doing so, this research seeks to better understand the opportunities, practices, and outcomes that OHCs provide to their members. The findings of this research extend the value of a physical diabetes group education program at the QUT clinic. This research proposes a novel model for diabetes online communities to empower patients in their self-management.
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Beeson, Tony. "Self-Perceptions of Potential Educational Success among Displaced Lesbian, Gay, Bisexual, Transgender, and Queer (LGBTQ+) Youth| An Exploration of Experience, Supports, Resilience, and Potential." Thesis, California State University, Long Beach, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10283801.
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Displaced Lesbian, Gay, Bisexual, Transgender, and Queer (LGBTQ+) youth exist in educational environments that are ill-equipped to support them in their pursuit of educational success. Limited research on this group documents a lack of targeted supports resulting in significant struggles as they attempt to overcome obstacles in their path toward success. This study overlays the Minority Stress Process and Adolescent Resilience Theory’s models of support in an attempt to understand how targeted supports helped seven individuals overcome obstacles throughout their displacement from family and home. The study explored these individuals’ perceptions of the displacement, supports, resilience, and potential for educational access and success. Interview data was analyzed to arrive at descriptions of experiences that informed the development of codes and themes. In order to contextualize participant interview data, five observations of externally-based support groups and interviews with two support providers were conducted.
The participants in this study had diverse identities within the LGBTQ+ umbrella. Also, some were forcibly displaced due to familial nonacceptance of their gender or sexual identities, while others self-displaced in an attempt to live openly. However, they each described the loss of both familial supports and each reported a lack of targeted supports at school to help them overcome identity nonacceptance, displacement, and lack of belonging. All participants fought to access externally-based protective and compensatory supports. Educational institutions must implement policies and practices to ensure all displaced LGBTQ+ individuals are supported. By mirroring the externally-based programs that are successful with limiting the effects of displacement and identity non-acceptance, educational institutions can interrupt the Minority Stress Process and the associated adversity.
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Kim, Hongjip. "Enhanced Energy Harvesting for Rotating Systems using Stochastic Resonance." Diss., Virginia Tech, 2020. http://hdl.handle.net/10919/96728.
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Energy harvesting from the rotating system has been an influential topic for researchers over the past several years. Yet, most of these harvesters are linear resonance-based harvesters whose output power drops dramatically under random excitations. This poses a serious problem because a lot of vibrations in rotating systems are stochastic. In this dissertation, a novel energy harvesting strategy for rotating systems was proposed by taking advantage of stochastic resonance. Stochastic resonance is referred to as a physical phenomenon that is manifest in nonlinear bistable systems whereby a weak periodic signal can be significantly amplified with the aid of inherent noise or vice versa. Stochastic resonance can thus be used to amplify the noisy and weak vibration motion.
Through mathematical modeling, this dissertation shows that stochastic resonance is particularly favorable to energy harvesting in rotating systems. The conditions for stochastic resonance are satisfied by adding a nonlinear bistable energy harvester to the rotating system because whirl noise and periodic signalㄴ already coexist in the rotating environment. Both numerical and experimental results show that stochastic resonance energy harvester has higher power and wider bandwidth than linear harvesters under a rotating environment.
The dissertation also investigates how stochastic resonance changes for the various types of excitation that occur in real-world applications. Under the non-gaussian noise, the stochastic resonance frequency is shifted larger value. Furthermore, the co-existence of the vibrational and stochastic resonance is observed depending on the periodic signal to noise ratio.
The dissertation finally proposed two real applications of stochastic resonance energy harvesting. First, stochastic resonance energy harvester for oil drilling applications is presented. In the oil drilling environment, the periodic force in rotating shafts is biased, which can lower the efficacy of stochastic resonance. To solve the problem, an external magnet was placed above the bi-stable energy harvester to compensate for the biased periodic signal. Energy harvester for smart tires is also proposed. The passively tuned system is implemented in a rotating tire via centrifugal force. An inward-oriented rotating beam is used to induce bistability via the centrifugal acceleration of the tire. The results show that larger power output and wider bandwidth can be obtained by applying the proposed harvesting strategy to the rotating system.Doctor of Philosophy
In this dissertation, a novel energy harvesting strategy for rotating systems was proposed by taking advantage of stochastic resonance. Stochastic resonance is referred to as a physical phenomenon that is manifest in nonlinear bistable systems whereby a weak periodic signal can be significantly amplified with the aid of inherent noise or vice versa. Stochastic resonance can thus be used to amplify the noisy and weak vibration motion. Through mathematical modeling, this dissertation shows that stochastic resonance is particularly favorable to energy harvesting in rotating systems.Both numerical and experimental results show that stochastic resonance energy harvester has higher power and wider bandwidth than linear harvesters under a rotating environment. The dissertation also investigates how stochastic resonance changes for the various types of excitation that occur in real-world applications. The dissertation finally proposed two real applications of stochastic resonance energy harvesting. First, stochastic resonance energy harvester for oil drilling applications is presented. Energy harvester for smart tires is also proposed. The results show that larger power output and wider bandwidth can be obtained by applying the proposed harvesting strategy to the rotating system.
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Vann, Kendra E. "Adolescent potential to harm and prevailing antecedents: exposure to mass media, substance use, and self-evaluation." DigitalCommons@Robert W. Woodruff Library, Atlanta University Center, 2000. http://digitalcommons.auctr.edu/dissertations/1478.
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This study examined the potential to commit harm by youth aged 11-16 in relation to the mass media, substance use, and self-evaluation.
A questionnaire was designed to examine selected variables associated with youth who commit harm to others. The research sample consisted of 186 students who attended an elementary school and a middle school located in a southern metropolitan area.
Analysis of variance was used to analyze the data collected. The research indicated that two of the three hypotheses tested were statistically significant including substance use and self-evaluation. There was no statistically significant relationship for self-evaluation and mass media. Although there was not a statistically significant relationship regarding mass media, it can be concluded from the data that adolescents' behaviors are somewhat affected by their daily viewing of television.
An important implication of this study is not just the need for further research, but also the need for an enhanced focus on practical solutions to reverse the observed potential to harm others. Previous literature on adolescents and their potential to harm others has explored an array of factors; however, a decrease in youth violence continues to be a most challenging goal for all involved in juvenile rehabilitation and resocialization.
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Hashimoto, Takeshi. "Subsurface Hydrothermal Activity Accompanying the 1990-1995 Eruption of Unzen Volcano Inferred from Self-Potential Observations." 京都大学 (Kyoto University), 1996. http://hdl.handle.net/2433/160911.
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本文データは平成22年度国立国会図書館の学位論文(博士)のデジタル化実施により作成された画像ファイルを基にpdf変換したものであるKyoto University (京都大学)
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新制・課程博士
博士(理学)
甲第6491号
理博第1751号
新制||理||966(附属図書館)
UT51-96-K59
京都大学大学院理学研究科地球物理学専攻
(主査)教授 住友 則彦, 教授 小林 芳正, 教授 荒木 徹
学位規則第4条第1項該当
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Hernandez, Olivia Kay. "The Potential for Tele-Presence to Assist and Aid with the Supervision of Medication Self-Management." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1253564125.
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Heffernan, Emma Elizabeth. "Delivering zero carbon homes and sustainable communities : the potential of group self-build housing in England." Thesis, University of Plymouth, 2015. http://hdl.handle.net/10026.1/3429.
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Concerns about anthropogenic climate change, fossil fuel depletion, energy security, and damage to our ecosystems are acting as a catalyst for action in many sectors of industry and society. One key sector which has been identified as crucial for addressing these issues is the building sector. Therefore, in the UK context, with the aim of reducing carbon dioxide emissions, the requirements for new homes in terms of their energy efficiency are becoming ever more stringent, leading to the introduction of the zero carbon homes standard from 2016. Alongside this, broader priorities for sustainable development have been established in the UK, with a focus on the creation of sustainable communities. These are communities which support the diverse needs of residents and provide a good quality of life whilst protecting the natural environment. The literature suggests that the volume housebuilding sector is failing to meet housing demand in terms of either quantity or quality. Furthermore, it is apparent that the sector is failing to respond to voluntary stimuli for the delivery of zero carbon homes. Thus, it is with an overall aim of supporting the delivery of zero carbon homes and sustainable communities that this thesis has been undertaken. The UK Government suggested in 2011 that self-build homes, in which the occupant is involved in either building or commissioning the home, are more likely to be affordable, energy efficient and innovative than open market housing. Self-build housing accounts for only around 10% of new homes built in the UK, and group self-build is a small proportion of this. The UK Government has an aspiration to double the size of the self-build sector, with an expansion in the group self-build sector, over the decade to 2021. Literature on the self-build sector is limited, and that on the group self-build sector even more so. Indeed, gaps in knowledge in terms of the motivations for and benefits of group self-build exist. There are also gaps in knowledge in terms of the barriers to group self-building and ways in which the expansion of the sector could be best supported. Furthermore, existing literature on drivers for and barriers to zero carbon homebuilding is limited and fails to gather opinions from the broad range of professionals involved in the delivery of new homes. With the aim of addressing these gaps in knowledge, three complementary studies were conducted with an element of focus on the region of Cornwall, in South West England. With the aim of exploring opinions of professionals involved in the delivery of new homes regarding zero carbon homebuilding, a series of 34 semi-structured interviews was undertaken within the first study (Perceptions of zero carbon homebuilding). The second study was undertaken with the aim of investigating professional and expert opinions on the suitability of group self-build as a development model for zero carbon homes and sustainable communities (Self-build perceptions). This investigation employed the Policy Delphi method, an iterative, non-contact group research process in which data was gathered from participants through three rounds of online questionnaire surveys. This second study was formed of two concurrent studies; one employed a panel of national participants within England, the other a panel of regional participants within South West England. The third and final study aimed to explore the experience-based opinions of group self-builders through a series of 11 in-depth interviews (Group self-build reflections). The three studies are presented independently. However, each subsequent study is built upon the knowledge gained in the previous study. Within the final chapter of the thesis, the results are brought together and triangulated through a consideration of how the findings coalesce to cast light on the three central concepts of zero carbon homes, sustainable communities, and group self-build housing. The findings from this research identify and elucidate a number of themes of drivers for and barriers to zero carbon homebuilding. Themes of drivers include: legislative, economic, social responsibility, individual, and industry. Themes of barriers include: economic, skills and knowledge, industry, legislative, and cultural. Multiple potential support mechanisms for the delivery of zero carbon homes were also identified. The findings highlight the need for a cultural shift in the housebuilding industry, reducing the over-reliance on volume housebuilders. A broad range of benefits and motivations for group self-building have been identified and explored. However, whilst a strong appetite for environmentally sustainable development amongst group self-builders is established, this research casts some doubt on the central assertion that group self-build homes will be more energy efficient than speculatively built homes. Differences between the individual and group self-build sector were exposed both in terms of the motivations and the barriers faced. This thesis demonstrates how the benefits of group self-build housing serve to help create sustainable communities, and how they also serve to address some of the barriers to zero carbon homebuilding. The findings of this research demonstrate that group self-build housing offers a significant number of potential benefits towards the delivery of zero carbon homes and the creation of sustainable communities.