TechnillionJobs is a solution consists of a digital web application, mobile App and a start-up. The solution is intended for helping unemployed Iraqi graduates & students at the final stages of their university studies network with employers locally and internationally. TechnillionJobs can give a bigger opportunity to easier find jobs/build a professional career, and therefore can be a contributing solution in reducing unemployment among graduates in Iraq. The purpose of the project is mainly to investigate and identify the reasons behind unemployment amongst Iraqi graduates as well as present a solution to reduce this problem and its negative effects. Also, to explore potential target groups, their needs and requirements for the product. The primary target groups were categorized as unemployed Iraqi graduates who can provide their knowledge and skills online, innovative companies who put a huge emphasis on their R&D department and educational companies that provide online courses & lesson plans. Primarily, the project group wanted to develop a concept that would respond to the problem statement by “only” launching a web application which in later development phases expanded to even a mobile App and start-up to provide real time services and offer On-demand Contracts (Explained in The Final Product section of this report) as well. In order to do a solid research in the problem area and come up with possible solutions and perform analysis, different scientific frameworks, methodologies and project tools such as Design Thinking, Agile methodology, Gantt-chart, Surveys and mini-risk calculation were used to make sure that the project execution follows a scientific structure. An overall timeline from the start of the project to the end is presented as well. The group has carried out this project in an iterative way where the user has always been in focus during a long dynamic development process. The opportunities for further development are many and, in the future, the product will be a more complete tool for connecting graduates with employers. Future business plans and goals are clarified in the Discussion section of this report. / TechnillionJobs är en lösning som består av en digital webbapplikation, mobil App och ett start-up. Lösningen hjälper arbetslösa irakiska akademiker och studenter i slutskedet av sina universitets-/högskolestudier knyta kontakter med arbetsgivare lokalt och internationellt. Detta kan ge en större möjlighet till att enklare hitta jobb/ bygga en yrkeskarriär, och kan därför vara en bidragande lösning för att minska arbetslösheten bland akademiker i Irak.  Syftet med projektet är främst att undersöka och identifiera orsakerna bakom arbetslöshet bland irakiska akademiker samt att presentera en lösning för att minska detta problem och dess negativa effekter. Också, att utforska potentiella målgrupper, deras behov och krav på produkten. De primära målgrupperna kategoriserades som arbetslösa irakiska akademiker som kan förse med sina kunskaper och färdigheter online, innovativa företag som lägger stor vikt på sina FoU-avdelningar och utbildningsföretag som tillhandahåller onlinekurser och lektionsplaner. Projektgruppen ville främst utveckla ett koncept som skulle svara på problemformuleringen genom att "endast" bygga en webbapplikation som i senare utvecklingsfaser utvidgades till även en mobil App och ett start-up för att tillhandahålla tjänster i realtid och erbjuda On-demand kontrakt (förklaras under rubriken The Final Product i denna rapport).  För att göra en gedigen forskning inom problemområdet och komma på möjliga lösningar och utföra analyser, användes olika vetenskapliga metoder och projektverktyg som Design Thinking, Agil produktutveckling, Gantt-schema, enkäter och mini-risk-beräkning för att se till att projekt genomförandet följer en vetenskaplig struktur. En övergripande tidslinje från projektets början till slutet presenteras också. Gruppen har genomfört detta projekt på ett iterativt sätt där användaren alltid har varit i fokus under en lång dynamisk utvecklingsprocess. Möjligheterna för vidareutveckling är många och i framtiden tänkas produkten att bli ett mer komplett verktyg för att länka akademiker med arbetsgivare. Framtida affärsplaner och mål klargörs i Discussion avsnittet i denna rapport.

published_or_final_version / Medical Sciences / Master / Master of Medical Sciences

Se ha desarrollado y construido una infraestructura experimental orientada a la validación de modelos de intercambiadores compactos de aletas y tubos y sistemas de refrigeración con sobrealimentación de líquido. El objetivo ha sido la obtención de datos experimentales fiables, con condiciones geométricas y de contorno exactamente definidas, para poder compararlos inequívocamente con resultados de simulaciones numéricas. Se presentan los modelos matemáticos, objetivo de la validación, y una descripción detallada del circuito de aire, del refrigerante líquido, y del refrigerante de cambio de fase, que integran la infraestructura.Estos tres circuitos están encargados de asegurar condiciones estables y controladas para los prototipos ensayados y para el sistema de refrigeración con sobrealimentación de líquido, en un amplio rango de temperaturas, flujos másicos y potencias. El diseño permite el ensayo de prototipos de intercambiadores de calor con diferentes geometrías y dimensiones. Se presentan detalladamente los instrumentos de medida con sus precisiones, montaje, se describen también los componentes y los parámetros de la unidad de adquisición de datos.Especial atención se ha dedicado a la calibración de los instrumentos de medida como parte esencial del proceso de preparación de los ensayos. Se describe el proceso de estimación de las incertidumbres sistemáticas de los sensores calibrados. Se expone en detalle la formulación y la metodología adoptada para el análisis de incertidumbre de los resultados experimentales.El procesamiento y el análisis de los datos experimentales se ha realizado en forma automática con un código computacional especialmente desarrollado, encargado de calcular los resultados a partir de las variablas medidas, de llevar a cabo el análisis de incertidumbres detallado, y de comparar los resultados numéricos y experimentales.Se presentan resultados experimentales obtenidos con la infraestructura experimental desarrollada. Se presentan estudios detallados de intercambiadores de calor compactos en condiciones de enfriamiento de aire, utilizando refrigerante líquido y de cambio de fase. Se presentan también resultados del estudio experimental del sistema de refrigeración con sobrealimentación de líquido. Los resultados han sido comprobados y verificados a través de balances energéticos en todos los componentes, donde la misma magnitud física ha sido evaluada de mediciones independientes. Con el objetivo de permitir el uso mas general de los resultados experimentales se presentan también los datos crudos de las variables medidas durante los ensayos.Se ha propuesto una metodología de validación para el modelo de intercambiadores compactos, basada en comparaciones sistemáticas de resultados numéricos y experimentales. Estas comparaciones han sido analizadas en términos estadísticos con el objetivo de cuantificar las diferencias observadas y dar una evaluación global de las prestaciones del modelo numérico en las condiciones ensayadas. La metodología propuesta para la validación del modelo de intercambiadores compactos puede ser utilizada como base para metodologías de validación en general. / Experimental infrastructures intended for validation of compact heat exchanger models, and models of liquid overfeed refrigeration systems have been developed and constructed. The aim has been the obtaining of reliable experimental data from tests at exactly defined geometrical and boundary conditions, permitting the unequivocal comparisons with numerical simulation results. The mathematical models are presented and detailed description of the airhandling, the liquid refrigerant, and phase-changing refrigerant circuits integrating the experimental infrastructure is given.These three circuits are encharged to provide stable controlled conditions for the tested prototypes and the liquid overfeed system in the desired range of temperatures, fluid flows, and capacities. The design permits the accommodation of heat exchanger prototypes with different geometry and sizes.Detailed overview of the measuring instruments is presented, with their accuracies and mounting, and the components and parameters of the data acquisition system are described.Special attention has been paid to the calibration of the measuring instruments as an essential part of the test preparation. The process of estimation of the systematic uncertainties in the calibrated sensors measurements is described. The formulation and the methodology adopted for the uncertainty analysis of the experimental results is exposed in detail.The experimental data processing and analysis has been performed automatically with a specially developed program encharged with the calculation of the experimental results from the measured variables, the detailed uncertainty analysis, and the numerical to experimental results comparisons.Experimental results obtained with the developed infrastructure are presented. Detailed studies of compact heat exchangers under cooling conditions, using liquid and phase-changing refrigerants, are performed and presented. Results from the experimental studies of the liquid overfeed refrigeration system are also presented. The results have been checked and verified through energy balance checks for all the components where measurements of the same physical magnitude can be contrasted with independent measurements. In order to give more general use of the obtained experimental data, the raw measured variables during the tests are also presented.An experimental validation methodology for the compact heat exchanger model has been proposed, based on systematic comparisons between numerical and experimental results. The comparisons have been analysed in statistical terms in order to quantify the observed differences and to give global evaluation of the numerical model performance in the tested conditions. The methodology proposed for validation of the heat exchanger model can be used as a basis for validation methodology for numerical models in general.

published_or_final_version / Public Administration / Master / Master of Public Administration

published_or_final_version / abstract / toc / Education / Master / Master of Education

No description available.

published_or_final_version / abstract / toc / Ecology and Biodiversity / Master / Master of Philosophy

published_or_final_version / Transport Policy and Planning / Master / Master of Arts in Transport Policy and Planning

published_or_final_version / Japanese Studies / Master / Master of Philosophy

In conventional tracking algorithms the targets are usually considered as point source objects. However, in realistic scenarios the point source assumption is often not suitable and estimating the states of an object extension characterized by a collectively moving ballistic object group (cluster) becomes a very critical and relevant problem which has applications in the defense area. Recently, a Bayesian approach to extended object tracking using random matrices has been proposed. Within this approach, ellipsoidal object extensions are modeled by random matrices and treated as additional state variables to be estimated. In this work we propose to use a slightly modified version of this new approach that simultaneously estimates the ellipsoidal shape and the kinematics of a group of ballistic targets. Target group that is tracked consists of subsequent projectiles. We use JPDAF framework together with the new approach to emphasize the pros and cons of both approaches. The methods are demonstrated and evaluated in detail by making various simulations.