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Das Bereitstellen von Parametern bezüglich Auflösungsvermögen und effektiver Auflösung ist ein gut erforschtes Wissenschaftsfeld, dennoch sind noch einige offen Fragen zu klären, wenn eine standardisierte Erhebung angestrebt wird. Zu diesem Zweck ist im Rahmen der vorliegenden Arbeit ein Framework definiert und mathematisch und methodologisch beschrieben worden unter Einbeziehung aller untergeordneten Prozesse. Weiterhin liefert sie einen detaillierten Überblick zu den verwendeten Methoden und Strukturen, um räumliche Auflösung zu messen. Das zuvor definierte Framework wird darüber hinaus genutzt, um alle zugehörigen Probleme bezüglich eines genormten Prozesses zu identifizieren und zu lösen. Der so definierte Prozess ist außerdem Teil der bevorstehenden, neuen Norm: DIN 18740-8. Im Hinblick auf die Norm sind alle Messeinflüsse an den möglichen Stellen quantifiziert worden und an Stellen, wo dies nicht möglich ist, wurden Vorkehrungen definiert, die diese Einflüsse mindern. Darüber hinaus wurde ein zugehöriges Softwaretool entwickelt, das ebenfalls die neue Norm unterstützt. Als weiterer Schwerpunkt dieser Arbeit wurde ein Verfahren zur Verbesserung der räumlichen Auflösung entwickelt und bewertet. Das zugehörige Softwaretool kombiniert dabei verschiedene Super-Resolution-Ansätze unter Einbeziehung zusätzlicher Kenntnis über die Bildqualität. Der neuartige Super-Resolution-Ansatz verbessert die räumliche Auflösung von Luftbildern und True-Ortho-Mosaiken indem er ein Set von niedrig aufgelösten Rohbildern, deren optimierter, äußerer und innerer Orientierung und die abgeleitete 3D-Oberfläche als Eingangsdaten akzeptiert. Anschließend werden ein oder mehrere hochaufgelöste Bilder als hybride Kombination von klassischen Super-Resolution-Methoden und De-Mosaikierung berechnet, unter Berücksichtigung der photogrammetrischen Projektionen auf die 3D-Oberfläche. Dabei werden Limitierungen der Bildkoregistrierung mit üblich verwendeten Optical-Flow-Ansätzen überwunden. / Although acquisition of resolving power and effective spatial resolution is a well-studied field of research, there are still several scientific questions to be answered when it comes to a standardized determination. Therefore, this thesis provides a description of a framework for the imaging process of remote sensing sensors mathematically and methodologically including imaging components and subsequent processes. Furthermore, a detailed review for different structures and methods to measure spatial resolution is included. Aforementioned framework then is utilized to identify related issues to a standardized process obtaining spatial resolution parameters as an image quality criterion to support an upcoming standard DIN 18740-8. With respect to define the norm-procedure every measurement influence is quantified where possible and in other cases arrangements are specified to diminish their influence. Moreover, the development of an associated software measurement tool has been accomplished as part of this thesis, which also supports the norm for aerial image quality, spatial resolution in particular. As part of a further objective of this thesis, a super-resolution approach to improve spatial resolution of aerial images has been developed and evaluated. The related software tool is able to combine different super-resolution techniques and includes known image quality parameter in subsequent calculations. The novel super-resolution approach improves spatial resolution of aerial imagery and true ortho-mosaics by taking a set of multiple low-resolved raw images (color filter array), their optimized exterior and interior orientation parameters and the derived 3D-surface as input. Then, one or more super-resolved images are calculated as a hybrid of classic super-resolution method and demosaicing while considering photogrammetric back-projections onto the 3D-surface. Thereby, limitations of image co-registration with commonly used optical flow approaches can be neglected.

Master of Science / Department of Biological & Agricultural Engineering / Kyle R. Douglas-Mankin / Radar-derived P3 data from Next Generation Radar (NEXRAD) of the National Weather Service (NWS) offer higher spatial resolution than precipitation gauge data, which might improve the accuracy of streamflow simulations using watershed models. The objective of this study was to evaluate the performance of spatially-averaged subwatershed-specific NEXRAD P3 data on streamflow simulations using Soil and Water Assessment Tool (SWAT) model. The SWAT hydrologic model was chosen for this study to simulate the hydrologic processes in North Fork Ninnescah Watershed located in south-central Kansas. A precipitation gauge station for each subwatershed was created using an area-weighted average of NEXRAD P3 precipitation estimates for all HRAP grid cells covering the subwatershed. The SWAT model was calibrated with both NEXRAD P3 data and NCDC precipitation gauge (PG) data from 1 January 2002 to 31 December 2008. The P3-calibrated model was validated using PG data for the same simulation period (2002-2008), and vice versa. The PG-calibrated model yielded slightly higher daily Nash-Sutcliffe efficiency (E(subscript)NS = 0.40) than P3 calibrated model (ENS = 0.35), but the yearly ENS and PBIAS for P3 calibrated model (ENS = 0.80) was much better than PG-calibrated model (ENS = 0.43). The P3-validated model (PG calibration) had yearly ENS = of 0.70, whereas the PGcalibrated model had ENS = 0.43. The daily PBIAS value for P3-calibrated model in 2007 (wet year) was -14.13 and for the P3-calibrated model was -32.83; PG data overestimated the streamflow compared to P3 data in 2007. The P3 data has better agreement with PG data from 2002-2008 period than for 1996-2001 period. The streamflow estimation was better with NEXRAD P3 precipitation data in both calibration and validation runs. Even though the model was calibrated with PG data, the validated model with P3 data has comparatively high ENS. The spatial variation of streamflow response within the watershed was greater compared to the temporal variation in both the calibrated models. The spatial representation of precipitation data by NEXRAD P3 has improved the modeling performance compared to PG data; it is evident that NEXRAD data is an alternative to precipitation gauge measurements.

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The aim of this study is to investigate an inter-action and a roleplay activity that takes place every Friday at a preschool in a suburb of Stockholm. The aim is to investigate learning in this activity and how it is corresponding to the curriculum for preschools. What is the teachers aim and how do the children think, talk and act before, during and after the game. It is a qualitative study and data was collected through qualitative interviews, field notes from observations and recordings with my I-phone. The results showed that the play is useful as a pedagogical documentation and as a tool for reflection. According to the educators it is possible to involve the entire curriculum for preschool in this roleplay, such as fundamental value, conflict resolution, children´s participation, traditional topics as mathematics and languages. The activity has developed in a cooperation with children and teachers together.

International Telemetering Conference Proceedings / October 29-November 02, 1990 / Riviera Hotel and Convention Center, Las Vegas, Nevada / The Fast Fourier Transform (FFT) converts digitally sampled time domain data into the frequency domain. This paper will provide an advanced introduction for the telemetry engineer to basic FFT theory and then present and explain the different user preprocessing options that are available when using the FFT. These options include: using windowing functions, “zero filling” for frequency data interpolation, and setting the frequency resolution of the FFT resultant spectrum,

Security models using access control policies have over the years improved from Role-based access control (RBAC) to newer models which have added some features like support for distributed systems and solving problems in older security policy models such as identifying policy conflicts. Access control policies based on hierarchical roles provide more flexibility in controlling system resources for users. The policies allow for granularity when extended to have both allow and deny permissions as well as weighted priority attribute for the rules in the policies. Such flexibility allows administrators to succinctly specify access for their system resources but also prone to conflict. This study found that conflicts in access control policies were still a problem even in recent literature. There have been successful attempts at using algorithms to identify the conflicts. However, the conflicts were only identified but not resolved or averted and system administrators still had to resolve the policy conflicts manually. This study proposed a weighted attribute administration model (WAAM) containing values that feed the calculation of a weighted priority attribute. The values are tied to the user, hierarchical role, and secured objects in a security model to ease their administration and are included in the expression of the access control policy. This study also suggested a weighted attribute algorithm (WAA) using these values to resolve any conflicts in the access control policies. The proposed solution was demonstrated in a simulation that combined the WAAM and WAA. The simulation's database used WAAM and had data records for access control policies, some of which had conflicts. The simulation then showed that WAA could both identify and resolve access control policy (ACP) conflicts while providing results in sub-second time. The WAA is extensible so implementing systems can extend WAA to meet specialized needs. This study shows that ACP conflicts can be identified and resolved during authorization of a user into a system.

Fluorescence microscopy is an important tool for biological research. However, the resolution of a standard fluorescence microscope is limited by diffraction, which makes it difficult to observe small details of a specimen’s structure. We have developed two fluorescence microscopy methods that achieve resolution beyond the classical diffraction limit. The first method represents an extension of localisation microscopy. We used nonnegative matrix factorisation (NMF) to model a noisy dataset of highly overlapping fluorophores with intermittent intensities. We can recover images of individual sources from the optimised model, despite their high mutual overlap in the original dataset. This allows us to consider blinking quantum dots as bright and stable fluorophores for localisation microscopy. Moreover, NMF allows recovery of sources each having a unique shape. Such a situation can arise, for example, when the sources are located in different focal planes, and NMF can potentially be used for three dimensional superresolution imaging. We discuss the practical aspects of applying NMF to real datasets, and show super-resolution images of biological samples labelled with quantum dots. It should be noted that this technique can be performed on any wide-field epifluorescence microscope equipped with a camera, which makes this super-resolution method very accessible to a wide scientific community. The second optical microscopy method we discuss in this thesis is a member of the growing family of structured illumination techniques. Our main goal is to apply structured illumination to thick fluorescent samples generating a large out-of-focus background. The out-of-focus fluorescence background degrades the illumination pattern, and the reconstructed images suffer from the influence of noise. We present a combination of structured illumination microscopy and line scanning. This technique reduces the out-of-focus fluorescence background, which improves the quality of the illumination pattern and therefore facilitates reconstruction. We present super-resolution, optically sectioned images of a thick fluorescent sample, revealing details of the specimen’s inner structure. In addition, in this thesis we also discuss a theoretical resolution limit for noisy and pixelated data. We correct a previously published expression for the so-called fundamental resolution measure (FREM) and derive FREM for two fluorophores with intermittent intensity. We show that the intensity intermittency of the sources (observed for quantum dots, for example) can increase the “resolution” defined in terms of FREM.

Dans de multiples domaines, un nombre grandissant d'applications interagissant avec des entités ommunicantes apparaissent dans l'environnement pour faciliter les activités quotidiennes (domotique et télémédecine). Leur impact sur la vie de tous les jours des utilisateurs rend ces applications critiques: leur défaillance peut mettre en danger des personnes et leurs biens. Bien que l'impact de ces défaillances puisse être majeur, la sécurité est souvent considérée comme un problème secondaire dans le processus de développement et est traitée par des approches ad hoc. Cette thèse propose d'intégrer des aspects de sécurité dans le cycle de développement des systèmes d'informatique ubiquitaire. La sécurité est spécifiée à la conception grâce à des déclarations dédiées et de haut niveau. Ces déclarations sont utilisées pour générer un support de programmation afin de faciliter l'implémentation des mécanismes de sécurité, tout en séparant ces aspects de sécurité de la logique applicative. Notre approche se concentre sur le contrôle d'accès aux entités et la protection de la vie privée. Notre travail a été implémenté et fait levier sur une suite outillée existante couvrant le cycle de développement logiciel.

Most dispute resolution is between employers and employees, family or friends, neighbors, and other groups who have continued contact after they leave the courtroom, mediator's office, or agree to contract terms. Because of such ongoing relationships, a vital component of any kind of dispute resolution is how conflicting parties feel about each other after the process is over. Although previous conflict resolution research focuses primarily on the perceived fairness of the third-party, process or outcome, my dissertation centers around how the two parties engaged in the process perceive each other and their relations. Specifically, I ask how intermediaries' intervention in a resolution process affects disputing individuals' perceptions of fairness of one another, general positive regard toward one another, and predictions for positive future interactions with one another.I explore the relationship between third party intervention and such relationship outcomes using two experimental methods, vignettes and laboratory research. In each experiment I vary the level of third party intervention (high, low, absent), while holding dispute resolution outcomes constant, and then measure disputants' perceptions of one another. I also test three potential intervening mechanisms for the relationship between intervention and perceptions - procedural fairness, situational attributions, and salience of conflict.Results indicate that third party intervention does affect perceptions disputants' have of one another and that such results vary based on the method used. In the vignettes, the method typical of research in third party intervention, intervention is negatively related to perceptions of the other party. However, the opposite is true in the laboratory experiment. The results from the laboratory suggest that third party intervention is positively related to perceptions of the other party and that both the increased likelihood of situational attributions and decreased salience of conflict with high third party intervention partially explain this relationship.Implications of these results, and potential areas of future research, are discussed.