The objective of this study is to evaluate the regional differences between the worldwide based NGA-W1 ground motion models and available Turkish strong ground motion dataset and make the required adjustments in the NGA-W1 models. A strong motion dataset using parameters consistent with the NGA ground motion models is developed by including strong motion data from Turkey. Average horizontal component ground motion is computed for response spectral values at all available periods using the GMRotI50 definition consistent with the NGA-W1 models. A random-effects regression with a constant term only is used to evaluate the systematic differences in the average level of shaking. Plots of residuals are used to evaluate the differences in the magnitude, distance, and site amplification scaling between the Turkish dataset and the NGA-W1 models. Model residuals indicated that the ground motions are overestimated by all 5 NGA-W1 models significantly, especially for small-to-moderate magnitude earthquakes. Model residuals relative to distance measures plots suggest that NGA-W1 models slightly underestimates the ground motions for rupture distances within 100-200 km range. Models including the aftershocks over-predict the ground motions at stiff soil/engineering rock sites. The misfit between the actual data and model predictions are corrected with adjustments functions for each scaling term. Turkey-Adjusted NGA-W1 models proposed in this study are compatible with the Turkish strong ground motion characteristics and preserve the well-constrained features of the global models. Therefore these models are suitable candidates for ground motion characterization and PSHA studies conducted in Turkey.

The quantum Hall (QH) system---cold electrons in two dimensions in a perpendicular magnetic field---is a striking example of a system where unexpected phenomena emerge at low energies. The low-energy physics of this system is effectively one-dimensional due to the magnetic field. We identify an exactly solvable limit of this interacting many-body problem, and provide strong evidence that its solutions are adiabatically connected to the observed QH states in a similar manner as the free electron gas is related to real interacting fermions in a metal according to Landau's Fermi liquid theory. The solvable limit corresponds to the electron gas on a thin torus. Here the ground states are gapped periodic crystals and the fractionally charged excitations appear as domain walls between degenerate ground states. The fractal structure of the abelian Haldane-Halperin hierarchy is manifest for generic two-body interactions. By minimizing a local k+1-body interaction we obtain a representation of the non-abelian Read-Rezayi states, where the domain wall patterns encode the fusion rules of the underlying conformal field theory. We provide extensive analytical and numerical evidence that the Laughlin/Jain states are continuously connected to the exact solutions. For more general hierarchical states we exploit the intriguing connection to conformal field theory and construct wave functions that coincide with the exact ones in the solvable limit. If correct, this construction implies the adiabatic continuation of the pertinent states. We provide some numerical support for this scenario at the recently observed fraction 4/11. Non-QH phases are separated from the thin torus by a phase transition. At half-filling, this leads to a Luttinger liquid of neutral dipoles which provides an explicit microscopic example of how weakly interacting quasiparticles in a reduced (zero) magnetic field emerge at low energies. We argue that this is also smoothly connected to the bulk state.

The presence of both narcissism and social capital in the digital social networking site Facebook is altering the dynamic of relationship development. Therefore, the central research question directing this study is as follows: What role do narcissistic personality traits play in bridging social capital on Facebook? From this, two sub-questions are raised: 1) What are the motives for users to express narcissistic traits through Facebook? 2) How is narcissistic-motivated activity influencing social capital development through Facebook? Guiding this thesis are concepts of social tie relationships (as they apply to narcissism), and digital social networks. An exploratory study of in-depth interviews was utilized to conduct such research. A key objective in this thesis is understanding motive and purpose for generating social capital in an online environment. The findings from this study suggest Facebook is a facilitator for the expression of narcissistic traits. As a result, this is influencing the disconnected and questionable value of digital social capital.

Understanding the bearing response of the footings on layered soils has always been a challenge for researchers. Due to the limitations of analytical and empirical solutions it had been difficult to understand the true bearing behavior. Some researchers have tried solving this problem by numerical analysis and have found some success. In this study the numerical analysis approach has been applied using a commercial tool FLAC (Fast Lagrangian Analysis of Continua) to study the bearing response of surface footings on layered clays. First, small deformation analyses were taken up to study the undrained bearing response of strip and circular footings resting on a horizontally layered strong over a soft clay foundation, and then over soft over strong clay foundation. In the end application of large strain mode of FLAC was explored to investigate the large deformation behavior of the strip footing resting on the surface of a strong over soft clay foundation. All models were run by applying velocity loading and a elastic-perfectly plastic Tresca yield criterion has been used. The results are compared with published Finite Element Method (FEM) results, and with analytical, empirical and semi-empirical solutions. It was found that bearing capacity results from the present small-strain FLAC analyses agree well with the FEM results. However, these results in most of the cases tend to differ (as much as 49% for certain layered clay foundations) from those predicted with analytical, empirical and semi-empirical solutions, mainly due to the assumptions made in these solutions. Since no such assumptions are made in the present FLAC analyses, the results and the methodology of this thesis can be applied to predict the bearing capacity of the practical problems. Application of the large-strain mode of FLAC to study the large deformation of shallow foundations has pointed out a limitation of FLAC in completing such analyses. However, it is observed from the early trends of these analyses that whereas the small deformation analysis may under estimate the ultimate bearing capacity for certain cases of layered foundations where the upper clay is moderately stiffer than the lower clay layer, it might also over predict the ultimate bearing capacity for other cases when the upper clay is very stiff in comparison to the lower clay layer. / February 2007

On the annexation of Jämtland by Sweden in 1645, Danish clergymen were allowed to remain on condition that they officiated in the Swedish language. This dissertation investigates the changes in the written language of one of these Danish clergymen and is based on the parish register kept by the Rev. Olof Bertilsson between 1636 and 1668. The premise for this study is that individual variations and alterations in written language do not occur arbitrarily, but display systematisation and express social consensus. The analytical basis for this approach is derived from Alexander Zheltukhin’s work on orthographic code theory and employs concepts used in sociolinguistics, but also borrows ideas from theories of mixed languages and second-language learning. Between 1636 and 1646 Olof Bertilsson displays a highly stable orthographic code with few variations. Following his attendance at the Riksdag (the Swedish Parlament) in Stockholm in 1647, a distinct change is evident in his orthography. Changes occur quite early in the spelling of some place-names, personal names and important and frequent ecclesiastical terms. A decisive factor in determining when and how change occurs is his access to examples of Swedish texts. In the last decade of his life, an influx of Swedish clergy, increased contacts with Swedish officials and help from young clergymen with a Swedish education, contribute to a predominance of Swedish forms in Olof Bertilsson’s individual orthographic code.

Bakgrund: 2010 presenterade SCB en undersökning om hur 403 000 jobb tillsattes (GP 2010). 79 000 av dessa tjänster tillsattes via personliga kontakter och ytterligare 100 000 där arbetsgivaren själv kontaktade den arbetssökande. Denna trend i användandet av det sociala kontaktnätet får stöd av Lena Hensvik, doktorand i nationalekonomi, i tidskriften Framtider (2012). Hon skriver att den sociala omgivningen såsom grannar, skolkamrater, tidigare kollegor och föräldrar har stor betydelse för hur vi får anställning eller inte. Hon menar att kontaktnätet är en viktig självinvestering då vårdandet av ens nätverk uppenbarligen kan underlätta jobbsökandet. Hensvik (2012) fortsätter skriva att det i dagens samhälle inte bara handlar om vem du är utan även vem du känner. Syfte: Tidigare forskning berättar att personliga kontakter är en av de faktorer som ökar anställningsbarheten. Vi vill därför ta vid där tidigare forskning slutar och göra en mer inriktad studie där vi fokuserar på personliga kontakter och kartlägger dess effekt i praktiken. Vi ämnar därför förklara personliga kontakters betydelse i samband med nyanställning av civilekonomer med examen från 2007-2012. Metod: Vi har valt att genomföra vår studie med en kvantitativ undersökningsdesign och ett deduktivt synsätt på relationen teori och forskning. Empiriska data har insamlats genom enkätundersökning. Slutsats: Vår slutsats är att personliga kontakter är användbara för civilekonomer i anställningsprocessen, att kontakterna till 90,4% leder dem till minst intervju och att kontakterna inte nödvändigtvis är de som är definierade som svaga, se Granovetters (1973, 1975) teorier om The Strength of Weak Ties. / Background: In 2010 SCB presented a survey of how 403 000 jobs were added (GP 2010). 79 000 of these were added through social contacts and another 100 000 by the employer himself who contacted the unemployed. This trend of using social contacts in the job-seeking process gets support by Hensvik, doctor in economics. In the magazine Framtider (2012) she writes that the social environment such as neighbours, class mates, former colleagues and parents have a big impact if we get an employment or not. Hensvik (2012) says that the caring of ones contacts is an important self-investment that improves your probabilities of getting an employment. She continues writing that in today’s society it’s not only important who you are but also who you know. Purpose: Previous research tells that social contacts are one of the factors that will improve your probabilities of getting employed. We will continue where previous research tends to end and aim for a more focused study where we measure the effects of using contacts in reality. The purpose of this thesis is to explain the contacts’ importance when employing former students with a Degree of Master of Science in Business and Economics. Method: We have conducted a questionnaire survey that was sent out to eight Swedish universities resulting in 100 responses. Conclusion: We have come to the conclusion that social contacts contribute in the recruitment process of former business students, that the use of contacts in 90,4% will get you far in the job-seeking process and that the helpful contacts are not necessarily the ones defined as weak ties, of which Granovetter (1973, 1975) would have argued.

Iterative methods are extensively used to solve linear and nonlinear problems arising from both pure and applied sciences, and in particular, in fixed point theory and optimization. An iterative method which is used to find a fixed point of an operator or an optimal solution to an optimization problem generates a sequence in an iterative manner. We are in a hope that this sequence can converge to a solution of the problem under investigation. It is therefore quite naturally to require that the distance of this sequence to the solution set of the problem under investigation be decreasing from iteration to iteration. This is the idea of Fejer-monotonicity. In this paper, We consider quasi-Fejer monotone sequences; that is, we consider Fejer monotone sequences together with errors. Properties of quasi-Fejer monotone sequences are investigated, weak and strong convergence of quasi-Fejer monotone sequences are obtained, and an application to the convex feasibility problem is included.

Ground-motion data processing is a necessity for most earthquake engineering related studies. Important engineering parameters such as the peak values of ground motion and the ordinates of the response spectra are determined from the strong ground-motion data recorded by accelerometers. However, the raw data needs to be processed since the recorded data always contains high- and low-frequency noise from different sources. Low-cut filters are the most popular ground-motion data processing scheme for removing long-period noise. Removing long-period noise from the raw accelogram is important since the displacement spectrum that provides primary information about deformation demands on structural systems is highly sensitive to the long-period noise. The objective of this study is to investigate the effect of low-cut filtering period on linear and nonlinear deformation demands. A large number of strong ground motions from Europe and the Middle East representing different site classes as well as different magnitude and distance ranges are used to conduct statistical analysis. The statistical results are used to investigate the influence of low-cut filter period on spectral displacements. The results of the study are believed to be useful for future generation ground-motion prediction equations on deformation demands that are of great importance in performance-based earthquake engineering.

In this thesis it is aimed to compile the Turkish strong-motion database for its efficient use in earthquake engineering and strong-motion seismology related studies. Within this context, the Turkish strong-motion database is homogenized in terms of basic earthquake source parameters (e.g. magnitude, style-of-faulting) as well as site classes and different source-to-site distance metrics. As part of this objective, empirical relationships for different magnitude scales are presented for further harmonization of the database. Data processing of the selected raw (unprocessed) strong-motion accelerograms that do not suffer from non-standard problems are realized. A comparative study is also conducted between the peak ground-motion values of Turkish strong-motion database with the estimations computed from different ground-motion prediction models. This way the regional differences of Turkish database are evaluated by making use of global prediction models. It is believed that the main products of this thesis will be of great use for reliable national seismic risk and hazard studies.

High-pass filtering that is one of the most efficient methods in removing long-period noise of accelerograms is investigated for its effect on nonlinear oscillator deformation response. Within this context, uncertainty in filter cut-off periods that would significantly modify the low-frequency content of accelerograms come into prominence for obtaining reliable long-period displacement response. Analog and digital ground-motion records from recently compiled Turkish strong-motion database are used and these records are high-pass filtered with a consistent methodology by randomly generated filter cut-offs that represent different filter cut-off decisions of the analysts. The uncertainty in inelastic spectral and residual displacements (SDIE and SDR, respectively) due to variations in filter cut-offs is examined to derive the usable period ranges where the effect of high-pass filtering is tolerable. Non-degrading, stiffness degrading and stiffness and strength degrading oscillator behavior are considered in these analyses. The level of nonlinear behavior in single degree of freedom (SDOF) response is described by varying the yield strength (R, normalized yield strength) and displacement ductility (&micro / ) levels. The usable period ranges that depend on magnitude, recording quality, level of inelasticity and level of degradation are determined for SDIE through robust probabilistic methodologies.