<p>As buildings have almost come to a saturation point in most developed countries, the management and maintenance of existing buildings have become the major problem of the field. Building Information Modeling (BIM) is the underlying technology to solve this problem. It is a 3D semantic representation of building construction and facilities that contributes to not only the design phase but also the construction and maintenance phases, such as life-cycle management and building energy performance measurement. This study aims at the processes of creating as-built BIM models, which are constructed after the design phase. Point cloud, a set of points in 3D space, is an intermediate product of as-built BIM models that is often acquired by 3D laser scanning and photogrammetry. A raw point cloud typically requires further procedures, e.g. registration, segmentation, classification, etc. In terms of segmentation and classification, machine learning methodologies are trending due to the enhanced speed of computation. However, supervised machine learning methodologies require labelling the training point clouds in advance, which is time-consuming and often leads to inevitable errors. And due to the complexity and uncertainty of real-world environments, the attributes of one point vary from the attributes of others. These situations make it difficult to analyze how one single attribute contributes to the result of segmentation and classification. This study developed a method of producing point clouds from a fast-generating 3D virtual indoor environment using procedural modeling. This research focused on two attributes of simulated point clouds, point density and the level of random errors. According to Silverman (1986), point density is associated with the point features around each output raster cell. The number of points within a neighborhood divided the area of the neighborhood is the point density. However, in this study, there was a little different. The point density was defined as the number of points on a surface divided by the surface area. And the unit is points per square meters (pts/m²). This research compared the performances of a machine learning segmentation and classification algorithm on ten different point cloud datasets. The mean loss and accuracy of segmentation and classification were analyzed and evaluated to show how the point density and level of random errors affect the performance of the segmentation and classification models. Moreover, the real-world point cloud data were used as additional data to evaluate the applicability of produced models.</p>

It has become more common for organization to operate a lot of projects at the same time. These projects affect each other, either in way of resources or technical. Projects in a multi-project environment depend and affect each other, and in most cases they rival about resources, decision-makings and priority. To lead a project portfolio with several projects is a major challenge. The most common problems that occur are vague objective, unclear working conditions, resource shortage and problems of priority. To be able to avoid these problems and lead the projects successfully, an effective and working resource plan is essential, which an IT-support can provide with. The company that is describes in this study is Spinn Action Marketing which specializes in creative solutions for communication that operates sales in short and long runs. The projects that the company leads, operates in a multi-project environment and the project management have challenges with the resource planning. The purpose of this study is to research how to make resource planning in a multi-project organization more effective with an IT-support. It has been theoretically researched with a literature study about problems and success factors in multi-projects environment and the pros and cons with an IT-support for project and resource planning. Empirical data has been collected through interviews, participating in weekly plan meeting and by analyzing the company’s existing documentation about resource planning. The result of this study shows how a multi project organization does its resource planning, what kind of demands there are on an IT-support and it also shows results in a poll which researches what kind of IT-support different company’s use to plan their projects and resources. / Det har blivit allt mer vanligt för organisationen att driva många projekt samtidigt som påverkar varandra, resursmässigt eller tekniskt. I en multiprojektsmiljö är projekten beroende av arandra och i många fall konkurrerar de med varandra om resurser, beslut och uppmärksamhet. Att leda n projektportfölj med många projekt är en betydande utmaning. De vanliga problemen som ppstår är otydliga mål, otydliga arbetsformer, resursbrist, samt prioriteringsproblem. För att undvika de vanliga problemen och driva projekten framgångsrikt är en effektiv och fungerande esursplanering väsentligt, vilket ett IT-stöd möjligen kan bidra till. Företaget som beskrivs i studien är Spinn Action Marketing som specialiserar sig på kreativa kommunikationslösningar som driver försäljning på kort och lång sikt. Projekten i företaget drivs i en multiprojektsmiljö och projektledningen upplever svårigheter med resursplaneringen. Studien syftar till att undersöka hur man kan effektivisera resursplaneringen ed ett IT-stöd. Det har undersökts teoretiskt om kända problem och framgångsfaktorer inom multiprojektsmiljöer, för- respektive nackdelar med ett IT-stöd för projekt- och resursplanering genom en litteraturstudie. Det har samlats in empirisk data genom intervjuer, deltagande i veckoplaneringsmöte och statusmöten veckovis samt genomgång av företagets befintliga dokumentation om resursplaneringen. Resultatet av studien visar hur en ultiprojektsorganisation resursplanerar, vad det finns för krav på ett IT-stöd och en enkätundersökning om undersöker vilka IT-stöd andra liknande företag använder för att planera projekt och resurser.

I ett projektarbete i en ingenjörsutbildning används olika metoder och verktyg, för att planera och strukturera arbetet. En möjlighet är att använda fysiska projekttavlor. Det finns även interaktiva smartskärmar med uppkoppling till internet, som möjliggör arbete på distans. Detta arbete fokuserar på smartskärmen Samsung Flip 2, och undersöker om det går att använda den för projektarbeten i ingenjörsutbildningar. Projektet inleds med en förstudie, vars fokus är på whiteboardtavlor, planeringstavlor och interaktiva skärmar. Vidare utförs opinionsundersökningar med två olika studentgrupper. Med hjälp av de svar som erhållits, identifieras de funktioner som anses viktiga när projekttavlor används i utbildningen. Dessutom för- och nackdelar vägs för olika typer projekttavlor. En önskebild av en projekttavla, som är en samling av önskade egenskaper, tas fram baserad på förstudien och opinionsundersökningarna. Sedan testas mjukvaruverktygen Lucidchart, Notion, Trello och Jira i samband med smartskärmen Samsung Flip 2, för att se om det går att uppnå önskebilden. Resultaten av testningen används sedan för att utvärdera Samsung Flip 2. Det visar sig att den inte är en lämplig ersättning för en fysisk whiteboardtavla i projektarbeten. Utvärdering av andra smarskärmar och andra mjukvaruverktyg kan ge andra resultat. / In a project in an engineering education, different methods and tools are used, to plan and structure the work. One possibility is to use physical project boards. Another alternative is using an interactive smart-screen with access to the internet, which gives the opportunity to work remotely. This work focuses on the smart-screen Samsung Flip 2, and examines if it is possible to use it for projects in an engineering education. The project is initiated with a pre-study, where the focus is on whiteboards, project boards and interactive screens. Further on opinion polls are executed with two different student-groups. The answers help identify which functions that are important when project boards are used within the education, as well as pros and cons for different types of project boards. An ideal-picture of a project board, which is a collection of desired functionalities, is made based on the pre-study and opinion polls. After that the softwares Lucidchart, Notion, Trello and Jira are tested in combination with the smart-screen Samsung Flip 2, to see if it can fulfil the ideal-picture. The result from the tests is used to evaluate Samsung Flip 2. The evaluation shows that Samsung Flip 2 is not a suitable replacement for a physical whiteboard. Evaluations on other smart-boards and other softwares may yield a different result.

<p>Post-disaster temporary housing has been a significant challenge for the emergency management group and industries for many years. According to reports by the Department of Homeland Security (DHS), housing in states and territories is ranked as the second to last proficient in 32 core capabilities for preparedness.The number of temporary housing required in a geographic area is influenced by a variety of factors, including social issues, financial concerns, labor workforce availability, and climate conditions. Acknowledging and creating a balance between these interconnected needs is considered as one of the main challenges that need to be addressed. Post-disaster temporary housing is a multi-objective process, thus reaching the optimized model relies on how different elements and objectives interact, sometimes even conflicting, with each other. This makes decision making in post-disaster construction more restricted and challenging, which has caused ineffective management in post-disaster housing reconstruction.</p> <p>Few researches have studied the use of Artificial Intelligence modeling to reduce the time and cost of post-disaster sheltering. However, there is a lack of research and knowledge gap regarding the selection and the magnitude of effect of different factors of the most optimized type of Temporary Housing Units (THU) in a post-disaster event.</p> The proposed framework in this research uses supervised machine learing to maximize certain design aspects of and minimize some of the difficulties to better support creating temporary houses in post-disaster situations. The outcome in this study is the classification type of the THU, more particularly, classifying THUs based on whether they are built on-site or off-site. In order to collect primary data for creating the model and evaluating the magnitude of effect for each factor in the process, a set of surveys were distributed between the key players and policymakers who play a role in providing temporary housing to people affected by natural disasters in the United States. The outcome of this framework benefits from tacit knowledge of the experts in the field to show the challenges and issues in the subject. The result of this study is a data-based multi-objective decision-making tool for selecting the THU type. Using this tool, policymakers who are in charge of selecting and allocating post-disaster accommodations can select the THU type most responsive to the local needs and characteristics of the affected people in each natural disaster.

This work deals with ERP systems and project management. The aim is to design and create an ERP system for project planning and process management. The main idea is to create simple and eective solution to control all aspects of business processes in company.

La presente tesis busca desarrollar una guía basada en los conceptos planteados en el PMBOK en su sexta versión para que, con ello, se puedan eliminar los problemas de planificación de proyectos que son repetitivos en las implementaciones de oficinas prime en la ciudad de Lima. La necesidad de atender este problema es que la mayoría de pequeñas y medianas empresas del rubro no aplican conceptos de gestión de proyectos o lo hacen de manera muy puntual y de manera aislada, principalmente debido a que no pueden costear una oficina de gerencia de proyectos o a un profesional debidamente capacitado. Este problema genera que la utilidad de estas empresas se vea mermada por la aparición de sobrecostos, los cuales son resultados de esta inadecuada gestión. Cabe recalcar que la presente tesis se desarrolló teniendo 3 casos de estudio los cuales, si bien pertenecen al rubro de implementación de oficinas, tenían diversas diferencias en cuanto a alcance, plazos, costos, entre otros factores, con lo cual se puede garantizar un mejor análisis de los problemas encontrados y, con ello, poder realizar una propuesta más completa y que sea útil para cualquier proyecto futuro. Finalmente, es importante mencionar que el planteamiento realizado fue validado luego de la revisión de expertos en el tipo de proyectos que se ha evaluado, el cual es implementación de oficinas. / This thesis seeks to develop a guide or guidelines based on the concepts outlined in the PMBOK in its sixth version so that, with this, the problems of planning projects that are repetitive in the implementations of prime offices in the city of Lima can be eliminated. The need to address this problem is that the majority of small and medium-sized companies in the field do not apply project management concepts or do so very punctually and in isolation, mainly because they cannot afford a project management office or a properly trained professional. This problem generates that the utility of these companies is diminished by the appearance of cost overruns, which are the result of this inadequate management. It should be noted that this thesis was developed with 3 case studies which, although they belong to the office implementation area, had various differences in terms of scope, deadlines, costs, among other factors, with which a better analysis of the problems encountered and, with this, to be able to make a more complete proposal that is useful for any future project. Finally, it is important to mention that the approach made was validated after an expert review of the type of projects that has been evaluated, which is office implementation. / Tesis

Examensarbetet behandlar trä som byggnadsmaterial. I arbetet ingår en rapport med förklarande illustrationer samt framtagning av programhandlingar för ett bostadsprojekt. Byggbranschen står idag för en hög miljöbelastning där den största bidragande faktorn är materialproduktionen. Trots att trä är det enda koldioxidneutrala konstruktionsmaterialet byggs få flerbostadshus med trä som bärande stomme. Det råder brist på kunskap och erfarenhet inom träbyggnadsteknik av anledningen att en tidigare lagstiftning förbjöd byggnader över två våningar med trästomme. Studien har fördjupat sig i möjligheterna när det gäller lång spännvidd, konstruktionshöjd och arkitektonisk karaktär men även kraven för ljud och brand har styrt utformningen. Till en början förväntades trä ge upphov till en del begränsningar, främst gällande brand och akustik, men dessa kan till stor del lösas genom kompletteringar och noggrann projektering. Trä har många positiva egenskaper som hög hållfasthet, bra bärförmåga vid brand, bra värmeisoleringsförmåga samt att det ger ett bra inomhusklimat, vilket kan nyttjas i en byggnad. Fastigheten som valdes för projektet ligger i Rosenlundsparken på Södermalm i Stockholm. På platsen var det gynnsamt att bygga i trä på grund av bland annat dåliga markförhållanden. Studien har resulterat i en byggnad på 9 våningar, där den bärande stommen är helt utförd i trä. Stommen är uppbyggd av pelarbalksystem i entréplan och KL-trä på de resterande våningarna. Ett ribb-bjälklag har använts, som är en kombination av KL-trä och limträ. Resultatet visade att om tjocka bjälklag implementeras kan flerbostadshus med långa spännvidder uppföras, med en högre byggnadshöjd som följd. Långa spännvidder ger en frihet när det gäller att utforma planlösningar. Trä är ett flexibelt material vilket ger möjlighet till frihet i form. Träets naturliga karaktär ger en positiv effekt på människor och är estetiskt tilltalande. Byggnaden har böjda former vilket bidrar med kontrast till det befintliga stadsrummet. Fasaden är utförd i trä och även interiört är det synligt trä i stor utsträckning. / The thesis is about wood as a building material. The work contains a report with explanatory illustrations and a project planning document for a residential. The building sector has a big impact on the climate, where the biggest contribution is the manufacturing of materials. Wood is the only material that is carbon oxide neutral, but still a small amount of the high apartment buildings is constructed with a wooden frame. The reason behind this is that a former law prevented wooden buildings higher than two floors and therefore there is a lack of knowledge and experience regarding wooden building technique. Wood has many positive qualities, which can be of advantage in a building. Such as a good load bearing capacity during a fire, good strength, good thermal conductivity, and it provides a healthy internal climate. There are also limitations with wooden constructions regarding fire and sound, but this can often be solved with supplements and thorough planning. This study examined the possibilities regarding span, height, and architecture. Additionally, sound- and fire conditions had an impact on the design. The project resulted in a long free span in consequent of a thick slab and therefore the building height increases. The property that was chosen for the project is located to Rosenlundsparken at Södermalm in Stockholm. The condition of the ground was not optimal to build on, because it consists of clay. But an advantage with a wooden construction it that it is light, which reduces the land work. This study resulted in a 9-floor high building where the frame is completely in wood. The frame is constructed with a column and beam system in the entrance floor and CLT walls on the other floors. A ribbed slab was chosen, which is a combination of CLT and glulam. The result showed that if thick slabs are implemented, residential buildings with long free span can be built and with a higher building height as a consequence. A long free span gives freedom when making floor plans. Furthermore, the wood offers flexibility, which makes different shapes possible. The building has round shapes which makes a contrast to the existing cityscape. Moreover, the woods natural character has a positive effect on humans and is aesthetically appealing. Wood is used as a cladding to the extent possible both interior and exterior.

<p>  </p> <p>Driving simulators have been introduced by some American states’ department of transportation (DOT) as a supplementary tool to train their snowplow drivers. This is a costly investment that requires careful planning. Yet, there is a current lack of recent studies that holistically evaluate factors affecting the decision-making process on adopting the driving simulator in winter snowplow driver training. The current research aims to fill this gap by employing the theoretical framework of Technology-Organization-Environment (T-O-E) to explore factors affecting state DOTs’ decision-making process of adopting snowplow driving simulator in driver training. Relevant factors were identified first using a scoping review of literature, and then validated by interviews with DOT stakeholders. Subsequent findings from the state DOT survey suggests that perceived long-term effect on public safety, cost related to simulator training, and ease of the relocation of simulator are the top contributors when it comes to the factors affecting decision-making on adoption of snowplow driving simulator in training. The resulted T-O-E framework contains 11 factors cross-verified from various sources, in which most factors such as simulator fidelity and relative advantage were categorized to technology context under the T-O-E framework, while the main environment factor relates to normative and mimetic pressure. The paper contributes to academic research by applying T-O-E to offer decision making support for using simulator technology for training of snowplow drivers; and to practitioners by providing state DOT decision makers a framework to analyze different factors on adopting snowplow driving simulators in training.</p>

För att nå Sveriges uppsatta klimatmål med netto noll växthusgasutsläpp år 2045 måste bygg- och fastighetssektorn som står för omkring 21% av Sveriges totala växthusgasutsläpp, arbeta för en hållbar utveckling. För att reglera utsläppen av växthusgaser i bygg- och fastighetssektorn har riksdagen infört ett krav på upprättande av klimatdeklaration vid uppförande av nya byggnader från och med januari 2022. Klimatdeklarationen ska redovisa vilken påverkan på klimatet en ny byggnad har genom en livscykelanalys. Kravet på inlämnandet av deklarationen är i slutet av ett byggprojekt. Många aktörer inom byggbranschen menar på att klimatberäkningar behöver påbörjas under tidigare skeden för att kunna påverka byggnadens hållbarhet. Detta då möjligheterna att påverka en byggnads energibehov och dess utsläpp av växthusgaser är som störst i tidigt projekteringsskede. Dock är informationen om den planerade byggnaden begränsad i tidigt skede och projektspecifik information saknas för att djupgående kunna bedöma byggnadens resultat och prestanda. Denna studie fokuserar på implementering av klimatberäkningar i tidiga skeden av projekteringsprocessen, anpassat för arkitekter och konstruktörers dagliga arbete. Detta då metodiska förenklingar och standardiserade tillvägagångssätt rörande klimatberäkningar i tidiga skeden ansetts relativt outforskat i tidigare publiceringar inom ämnet. Syftet med studien är att undersöka hur genomförandet av klimatberäkningar i tidigt skede av projekteringsprocessen kan gå till. Detta för att få en förståelse över hur implementeringen av arbetet med klimatberäkningar kan leda till ökad hållbarhet och ekonomisk lönsamhet i byggprojekt. Med en ökad förståelsen för klimatberäkningsarbetet i tidigt skede, är även målet att ta fram ett förslag på en standardiserad metod som vägleder arkitekter och konstruktörer att ta hållbara beslut i tidiga skeden.  Forskningsmetoden som använts är av kvalitativ karaktär och innefattar en litteraturstudie, fallstudie, intervju- och enkätstudie. Studien har utgått från ett konsultföretag med fokus på områdena arkitektur och byggkonstruktion. Enkätstudien har haft som syfte att undersöka hur arbetet inom fallföretaget fungerar idag. Intervjustudien har fokuserat på hur arbetet kan fungera i framtiden och fallstudien har undersökt/observerat hur arbetet med klimatberäkningar kan utföras i praktiken med hjälp av programvaran One Click LCA. Litteraturstudien har bidragit till djupare förståelser inom ämnet och väglett problemformuleringen i studien. Användandet av flera forskningsmetoder kallas för triangulering och bidrar till stärkt tillförlitlighet och trovärdighet för studien.     Studien visar på att det inledningsvis i ett projekt är lämpligast att använda sig av tidigare gjorda klimatberäkningar för att spara in tid och pengar. Användandet av tidigare beräkningar bör utgå från referensprojekt som organisationen själv tagit fram för att kunna motivera hur beräkningarna gått till. När egna klimatberäkningar utförs är det viktigt att de som utför arbetet med klimatberäkningarna själva är involverade i projektet. Det är även viktigt att alla projektmedlemmar har övergripande inblick i vad som krävs i ett modelleringsverktyg för att indata ska fungera på bästa sätt i ett automatiserat klimatberäkningsverktyg. Genom implementerandet av en standardiserad metod, uppstår en struktur som medför att inga viktiga moment glöms bort samt medför att fler kan få en inblick i arbetet och introduceras till projektet på ett enkelt sätt. Ett förslag på en standardiserad metod är framtaget utifrån analys av empirin i detta arbete och innefattar viktiga punkter för uppstarten/implementeringen av arbetet med klimatberäkningar i en organisation. Det innefattar även förslag på viktiga punkter när det gäller utförandet av klimatberäkningar i specifika projekt. / To reach Sweden’s climate goal of net zero greenhouse gas emissions in 2045, the construction and property sector must act for a sustainable development. Today the sector accounts for around 21% of Sweden’s total greenhouse gas emissions. In order to regulate the emissions of greenhouse gases in the construction and property sector, the government in January 2022 introduced a requirement for establishing climate declaration for the construction of new buildings. The climate declaration must report the impact a new building has on the climate, through a life cycle analysis. The requirement for when the declaration must be submitted is at the end of a construction project. Many actors in the construction industry believes that climate calculations need to be started in earlier stages to be able to affect the sustainability of the building. At the same time the information about the planned building is limited in the early stages and project-specific information is missing to be able to assess the building's results and performance in depth. This study focuses on the implementation of climate calculations in the early stages of the design process, adapted to the daily work of architects and constructors. This as methodological simplifications and standardized approaches regarding climate calculations in the early stages were considered relatively unexplored in previous publications in the subject. The purpose of the study is to investigate how the implementation of climate calculations in the early stages of the design process can be done. This is to gain an understanding of how the implementation of the work with climate calculations can lead to increased sustainability and economic profitability in construction projects. With an increased understanding of the climate calculation work at an early stage, the goal is also to develop a proposal for a standardized method that guides architects and constructors to make sustainable decisions in the early stages.  The study uses a qualitative research method that includes a literature study, case study, interview- and survey study. The study is based on a consulting company with a focus on the areas of architecture and building construction. The purpose of the survey study was to examine how the work within the case company operates today. The interview study has focused on how the climate calculation work can be operated in the future and the case study has examined/observed how the work with climate calculations can be carried out in practice using the One Click LCA software. The literature study has contributed to deeper understandings within the subject and guided the research topic in the study. The use of several research methods is called triangulation and contributes to strengthened reliability and validity of the study. The study shows that initially in a project it is appropriate to use previously made climate calculations to save time and money. The use of previous calculations should be based on reference projects that the organization itself has developed to be able to justify how the calculations were made. When conducting climate calculations, it is important that those who carry out the calculations are involved in the project. It is also important that all project members have an overall insight into what is required in a modeling tool, so the input data operates in the best way in an automated climate calculation tool. Through the implementation of a standardized method, a structure emerges, no important aspects are forgotten, and more people can gain an insight into the work and easily be introduced to the project. A proposal of a standardized method is developed based on the empirical analysis in this study and includes important points for the start-up/implementation of the work with climate calculations in an organization. It also includes suggestions on important points regarding the execution of climate calculations in specific projects.

This work focuses on the need for new knowledge to allow hierarchical multi-project management to be conducted in the construction industry, which is characterised by high uncertainty, fragmentation, complex decisions, dynamic changes and long-distance communication. A dynamic integrated project management approach is required at strategic, tactical and operational levels in order to achieve adaptability. The work sees the multi-project planning and control problem in the context of supply chain management at main contractor companies. A portfolio manager must select and prioritise the projects, bid and negotiate with a wide range of clients, while project managers are dealing with subcontractors, suppliers, etc whose relationships and collaborations are critical to the optimisation of schedules in which time, cost and safety (etc) criteria must be achieved. Literature review and case studies were used to investigate existing approaches to hierarchical multi-project management, to identify the relationships and interactions between the parties concerned, and to investigate the possibilities for integration. A system framework was developed using a multi-agent-system architecture and utilising procedures adapted from literature to deal with short, medium and long-term planning. The framework is based on in-depth case study and integrates time-cost trade-off for project optimisation with multi-attribute utility theory to facilitate project scheduling, subcontractor selection and bid negotiation at the single project level. In addition, at the enterprise level, key performance indicator rule models are devised to align enterprise supply chain configuration (strategic decision) with bid selection and bid preparation/negotiation (tactical decision) and project supply chain selection (operational decision). Across the hierarchical framework the required quantitative and qualitative methods are integrated for project scheduling, risk assessment and subcontractor evaluation. Thus, experience sharing and knowledge management facilitate project planning across the scattered construction sites. The mathematical aspects were verified using real data from in-depth case study and a test case. The correctness, usefulness and applicability of the framework for users was assessed by creating a prototype Multi Agent System-Decision Support System (MAS-DSS) which was evaluated empirically with four case studies in national, international, large and small companies. The positive feedback from these cases indicates strong acceptance of the framework by experienced practitioners. It provides an original contribution to the literature on planning and supply chain management by integrating a practical solution for the dynamic and uncertain complex multi-project environment of the construction industry.