Urban public spaces have been considered an essential part of cities throughout history. Over the span of urban life, public spaces have continuously reflected the complexities of their cities’ cultural, social, and economic contexts. Public spaces play a particular role in the life of urban areas, whether as memorable, accessible, or meaningful places. However, recent researches on public spaces reveal that some are currently experiencing a decline in their physical design and in their use. Many writers and scholars of public spaces issues identify a general decline, for which the causes and prescriptions are different according to the context of urban planning and designing. Thus, in this period of change in using public spaces, it becomes important to evaluate and investigate actual use of contemporary public spaces, how and why they are used, particularly in terms of their physical deterioration and/or improvement. Therefore, an opportunity exists to reveal and understand the interrelationship between physical patterns of contemporary public spaces and people’s activity patterns within such spaces. This thesis relates to urban public spaces uses, particularly public squares, and to the relationship between their physical and activity patterns. It considers the design features of urban public space, focusing on people’s activities and various forms of use – from passive to active engagement to understand the activity-physical patterns relationship in a selected urban public space. It therefore asks: How do people’s activities relate to the physical patterns of an urban public space? And how are people’s activities affected and encouraged by urban public space’s physical features? In order to address these questions, this thesis employs a methodology that combines direct field observations, activity mapping and Geographical Information Systems (GIS), as applied to a selected public space in Toronto, Mel Lastman Square to reveal the activity patterns that appear to be correlated with particular use of design features within the square. Thus, the value of this thesis is in studying the relationship between the activities and the physical settings of urban public spaces through using a proposed methodology and exploring GIS as an analytical tool to describe the activity-patterns relationship. Analyzing this relationship will add insights into and complement the application of urban design theories and practice which could lead to further studies to improve the public spaces design and planning process.

Background: Swedish hospitals face intensified challenges due to elevated demands from patients, demographic changes and cost constraints. Furthermore, patient safety is negatively affected by the relatively high rate of health care associated infections (HAIs). Thus, enforced preventive measures have to be undertaken to improve medical institutions’ ability to provide a qualitative and safe health care. Hence, logistics and technology solutions are gaining presence in modern day medical institutions in order to deliver improved health care.  Purpose: The purpose of this study is to explore how a central automatic bed disinfection system could be implemented at a hospital, and investigate if this would improve the patient safety by minimiz-ing the health care associated infections while enhancing the working environment for health professionals.  Method: This study takes the form of an exploratory single case study through the investigation of a Swedish hospital. Qualitative data was compiled through semi-structured interviews and observations, which were analyzed inductively.  Conclusion: The findings reveal that introducing a central automatic bed disinfection system may improve patient safety and the working environment for health care personnel. Additionally, more consistent hygiene standards and improved cleaning quality result in an augmented minimization of bacteria, which as a consequence reduces transmissions of HAIs. Through the implementation of an automatic bed disinfection system, the cleaning capacity is increased, thus the supply of beds becomes more responsive, which indirectly affects the patient flow. By developing a sound logistics system through a flow perspective, a more effective bed management at the hospital is enabled, which optimizes the patient throughput. Moreover, cost efficiencies may be obtained through a more efficient qualitative health care.

Urban public spaces have been considered an essential part of cities throughout history. Over the span of urban life, public spaces have continuously reflected the complexities of their cities’ cultural, social, and economic contexts. Public spaces play a particular role in the life of urban areas, whether as memorable, accessible, or meaningful places. However, recent researches on public spaces reveal that some are currently experiencing a decline in their physical design and in their use. Many writers and scholars of public spaces issues identify a general decline, for which the causes and prescriptions are different according to the context of urban planning and designing. Thus, in this period of change in using public spaces, it becomes important to evaluate and investigate actual use of contemporary public spaces, how and why they are used, particularly in terms of their physical deterioration and/or improvement. Therefore, an opportunity exists to reveal and understand the interrelationship between physical patterns of contemporary public spaces and people’s activity patterns within such spaces. This thesis relates to urban public spaces uses, particularly public squares, and to the relationship between their physical and activity patterns. It considers the design features of urban public space, focusing on people’s activities and various forms of use – from passive to active engagement to understand the activity-physical patterns relationship in a selected urban public space. It therefore asks: How do people’s activities relate to the physical patterns of an urban public space? And how are people’s activities affected and encouraged by urban public space’s physical features? In order to address these questions, this thesis employs a methodology that combines direct field observations, activity mapping and Geographical Information Systems (GIS), as applied to a selected public space in Toronto, Mel Lastman Square to reveal the activity patterns that appear to be correlated with particular use of design features within the square. Thus, the value of this thesis is in studying the relationship between the activities and the physical settings of urban public spaces through using a proposed methodology and exploring GIS as an analytical tool to describe the activity-patterns relationship. Analyzing this relationship will add insights into and complement the application of urban design theories and practice which could lead to further studies to improve the public spaces design and planning process.

Afin d’optimiser la surveillance des travailleuses du nucléaire par anthroporadiamétrie, il est nécessaire de corriger les coefficients d’étalonnage obtenus à l’aide du fantôme physique masculin Livermore. Pour ce faire, des étalonnages numériques basés sur l’utilisation des calculs Monte Carlo associés à des fantômes numériques ont été utilisés. De tels étalonnages nécessitent d’une part le développement de fantômes représentatifs des tailles et des morphologies les plus communes et d’autre part des simulations Monte Carlo rapides et fiables. Une bibliothèque de fantômes thoraciques féminins a ainsi été développée en ajustant la masse des organes internes et de la poitrine suivant la taille et les recommandations de la chirurgie plastique. Par la suite, la bibliothèque a été utilisée pour étalonner le système de comptage du Secteur d’Analyses Médicales d’AREVA NC La Hague. De plus, une équation décrivant la variation de l’efficacité de comptage en fonction de l’énergie et de la morphologie a été développée. Enfin, des recommandations ont été données pour corriger les coefficients d’étalonnage du personnel féminin en fonction de la taille et de la poitrine. Enfin, pour accélérer les simulations, des méthodes de réduction de variance ainsi que des opérations de simplification de la géométrie ont été considérées.Par ailleurs, pour l’étude des cas de contamination complexes, il est proposé de remonter à la cartographie d’activité en associant aux mesures anthroporadiamétriques le calcul Monte Carlo. La méthode développée consiste à réaliser plusieurs mesures spectrométriques avec différents positionnements des détecteurs. Ensuite, il s’agit de séparer la contribution de chaque organe contaminé au comptage grâce au calcul Monte Carlo. L’ensemble des mesures réalisées au LEDI, au CIEMAT et au KIT ont démontré l’intérêt de cette méthode et l’apport des simulations Monte Carlo pour une analyse plus précise des mesures in vivo, permettant ainsi de déterminer la répartition de l’activité à la suite d’une contamination interne. / To optimize the monitoring of female workers using in vivo spectrometry measurements, it is necessary to correct the typical calibration coefficients obtained with the Livermore male physical phantom. To do so, numerical calibrations based on the use of Monte Carlo simulations combined with anthropomorphic 3D phantoms were used. Such computational calibrations require on the one hand the development of representative female phantoms of different size and morphologies and on the other hand rapid and reliable Monte Carlo calculations. A library of female torso models was hence developed by fitting the weight of internal organs and breasts according to the body height and to relevant plastic surgery recommendations. This library was next used to realize a numerical calibration of the AREVA NC La Hague in vivo counting installation. Moreover, the morphology-induced counting efficiency variations with energy were put into equation and recommendations were given to correct the typical calibration coefficients for any monitored female worker as a function of body height and breast size. Meanwhile, variance reduction techniques and geometry simplification operations were considered to accelerate simulations.Furthermore, to determine the activity mapping in the case of complex contaminations, a method that combines Monte Carlo simulations with in vivo measurements was developed. This method consists of realizing several spectrometry measurements with different detector positioning. Next, the contribution of each contaminated organ to the count is assessed from Monte Carlo calculations. The in vivo measurements realized at LEDI, CIEMAT and KIT have demonstrated the effectiveness of the method and highlighted the valuable contribution of Monte Carlo simulations for a more detailed analysis of spectrometry measurements. Thus, a more precise estimate of the activity distribution is given in the case of an internal contamination.