Safety is the top priority for the aviation industry and a safe airport environment is essential to aviation safety. However, due to the increasing prevalence of UAS in recent years, UAS sightings have become a potential threat to airports. When UAS appear in the vicinity of airports, they bring safety concerns and result in negative operational and economic impacts on airports. Since the FAA’s mission is to provide the safest and most efficient aerospace system in the world, further research regarding the threat of UAS sightings to airports is needed. The purpose of this study is to investigate the threat of UAS to airports and in the national airspace system (NAS). This study includes three primary components: the analysis of 6,551 Federal Aviation Administration (FAA) UAS sighting reports, a case study of the impacts of the UAS sighting at Newark Liberty International Airport (EWR) on January 22, 2019, and a synthesis of airport operator perspectives based on interviews with airport personnel at five airports. The analysis of UAS sighting reports shows the characteristics of UAS sightings, the case study on EWR UAS illustrates the impact of the UAS sighting at the airport, and interview results illustrate the current perspective of airport operators regarding the risk of UAS. Along with the results, the scientific methods of identifying and analyzing the characteristics of UAS sightings in controlled airspace close to airports could be used by researchers to study UAS sightings in the future. Findings from this study may be beneficial to multiple stakeholders, including airport personnel, regulators, entrepreneurs, and vendors in the aviation industry. <br>

Rail track asset sighting distance must be checked regularly to ensure the continued and safe operation of rolling stock. Methods currently used to check asset line-of-sight involve manual labour or laser systems. Video cameras and computer vision techniques provide one possible route for cheaper, automated systems. Three categories of computer vision method are identified for possible application: two-dimensional object recognition, two-dimensional object tracking and three-dimensional scene recovery. However, presented experimentation shows recognition and tracking methods produce less accurate asset line-of-sight results for increasing asset-camera distance. Regarding three-dimensional scene recovery, evidence is presented suggesting a relationship between image feature and recovered scene information. A novel framework which learns these relationships is proposed. Learnt relationships from recovered image features probabilistically limit the search space of future features, improving efficiency. This framework is applied to several scene recovery methods and is shown (on average) to decrease computation by two-thirds for a possible, small decrease in accuracy of recovered scenes. Asset line-of-sight results computed from recovered three-dimensional terrain data are shown to be more accurate than two-dimensional methods, not effected by increasing asset-camera distance. Finally, the analysis of terrain in terms of effect on asset line-of-sight is considered. Terrain elements, segmented using semantic information, are ranked with a metric combining a minimum line-of-sight blocking distance and the growth required to achieve this minimum distance. Since this ranking measure is relative, it is shown how an approximation of the terrain data can be applied, decreasing computation time. Further efficiency increases are found by decomposing the problem into a set of two-dimensional problems and applying binary search techniques. The combination of the research elements presented in this thesis provide efficient methods for automatically analysing asset line-of-sight and the impact of the surrounding terrain, from captured monocular video.

In my work, I will focus on interpersonal conflict management and ways to prevent them. A description of how to ideally act in conflict situations and achieve the best possible solution to the "right" way.

This report presents a master’s thesis in Industrial Design Engineering at KTH Royal Institute of Technology in Stockholm. The project was conducted on behalf of Silva Sweden AB during the spring of 2023, with the goal of modularizing Silva’s current assortment of land compasses. The objectives included reducing the number of components and improving repairability while contributing to Silva’s sustainability framework. Additional objectives were to redesign vital components in order to enable a modular system that is implementable in a circular business model, benefiting both customers and Silva. The methodology of this project included researching, collecting data, mapping, testing and evaluating, ideating, developing, finalizing and communicating. Moreover, the focuses of this project have been the development of baseplates, the compass housing assembly and the mirror attachment. The final design and new compass assortment resulted in a reduction of 40 % of the total components. The most influencing factors for the reduction, besides standardization, were an improved housing assembly and a solution that joins the regular baseplate with a detachable mirror through a snap fit. In relation to the purpose of this project, all objectives are concluded as fulfilled as well as the deliverables which are successfully achieved as well. In conclusion, the result of this project provides a new and modular compass design that minimizes the number of components while contributing to the development of a sustainable compass assortment. / Detta är en masteruppsats inom Teknisk Design vid KTH Kungliga Tekniska Högskolan i Stockholm. Projektet genomfördes under våren 2023 på uppdrag av Silva Sweden AB med målet att modularisera Silvas befintliga sortiment av landkompasser. Syftet med projektet inkluderade minskning av antalet komponenter samt att utöka möjligheten för reparation av kompasser, och således bidra till Silvas pågående hållbarhetsarbete. Lösningen bör även möjliggöra ett modulärt system som ska kunna implementeras i en cirkulär affärsmodell till förmån för både kunder och Silva som företag. Metodiken i detta projekt inkluderade forskning, datainsamling, kartläggning, testning och utvärdering, idégenerering, utveckling, avslutning och kommunikation. Fokus för detta projekt varit att utveckla basplattan, nålhuset och spegelfästet. Den slutliga designen och det nya kompass sortimentet resulterade i en minskning på 40% av det totala antalet komponenter. De mest avgörande faktorerna för minskningen var den modulära lösningen som kombinerade den vanliga basplattan med en avtagbar spegel, samt standardiseringen av komponenter i det nya nålhuset. Utifrån de syften och mål som definierades i projektet så påvisar den slutgiltiga designen att alla dessa är uppfyllda. Sammanfattningsvis visar projektets resultat en ny och modulär kompassdesign som minskar antalet komponenter samtidigt som den bidrar till utvecklingen av ett hållbart kompass sortiment.

The aim of this diploma thesis is to find out the influence of methods and techniques of active teaching on the level of essay-writing in the basic school. The theoretical part describes chosen methods and techniques of active teaching within the context of the educational process. An experiment was carried out in the practical part and it verified the influence of these methods on the development of essay-writing potential of the pupils. The popularity of the chosen methods and techniques of active teaching was being researched by a questionnaire survey. The methods of active teaching were discovered to facilitate the success rate of the essay-writing and a statistically significant increase in the number of sentences and syntactic pairs was found in the experimental group.