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Urbana grönstrategier i kompakta stadsmiljöer

Syfte & mål: Syftet med studien är att undersöka vilka urbana grönstrategier som används i kompakta stadsmiljöer, samt vilka utmaningar, miljömässiga och sociala effekter som finns kopplade till lösningarna. Målet är att skapa en ökad förståelse för hur vegetation kan integreras och bidra till en mer hållbar stadsutveckling. Problemställning: Ökad urbanisering och klimatförändringar har bidAim & goal: The purpose of this study is to investigate which green strategies are used in compact urban environments, as well as what challenges, environmental and social impact are linked to the solutions. The goal is to create an increased understanding of how vegetation can be integrated and contribute to more sustainable urban development. Research questions: Increased urbanization and

Cirkulär masshantering inom byggbranschen

Bygg- och anläggningsprojekt genererar stora mängder schaktmassor, den årliga mängden som uppstår är cirka 60–200 miljoner ton (Naturvårdsverket, 2024). Schaktmassorna behöver hanteras och omhändertas vilket kan innebära att de återanvänds på den plats de uppstått eller att de transporteras bort för att hanteras på annan plats. Däremot kan massorna vara förorenade vilket ställer till problem, exemConstruction and civil engineering projects generate large amounts of excavated materials, with annual volumes estimated at 60-200 million tons (Naturvårdsverket, 2024). These materials need to be managed and handled, either by being reused at the site of origin or transported to another location for further use. Contamination of the materials can complicate their management, particularly in relat

Effects on Scavenging and Hydrocarbon Emissions: Altering the Combustion Chamber of a Small Two-Stroke Engine

This thesis focuses on how changing the combustion chamber geometry in a small two-stroke engine can improve performance. The engine used for this thesis is a Husqvarna AB chainsaw engine with Schn¨urle porting and air-leading stratified scavenging. Four different combustion chambers were subjected to CFD simulations, and from them two were selected for engine testing. In total, five combustion ch

Goda cykelstäder. Kännetecken och potential för ökad cykling

Cykling är en viktig del av ett hållbart transportsystem. Det bidrar bl.a. till en bättre miljö och förbättrad folkhälsa. Syftet med arbetet är att undersöka vilka faktorer som kännetecknar en bra cykelstad, ur en infrastruktursynpunkt och vilka faktorer som kan leda till ökad cykling. I arbetet intervjuas representanter för kommunerna Lund, Malmö och Helsingborg om vilka infrastrukturella åtgärdeCycling is an important part of a sustainable transport system. It contributes among other things to a better environment and improved public health. The aim of this thesis is to investigate which factors characterize a good cycling city, from an infrastructural point of view, and which factors may lead to increased cycling. In the thesis, representatives of the municipalities of Lund, Malmö and H

Vägkonstruktionens påverkan av belastning och nederbörd

Ett förändrat nederbördsklimat i kombination med ökade trafikbelastningar ställer nya krav på vägkonstruktioners utformning och funktion. Syftet med denna litteraturstudie är att undersöka hur vägkonstruktioner påverkas av kraftig nederbörd och tung belastning, samt att analysera skillnader mellan moderna och äldre konstruktioner avseende lastupptagning och vattenhantering. Vidare behandlas hur daA changing precipitation pattern, characterized by shorter but more intense rainfall events, combined with increasing traffic loads, places new demands on road construction design and performance. The aim of this literature study is to investigate how road structures are affected by heavy rainfall and increased loading, as well as to analyse differences between modern and older road constructions

Schaktmassor - Från avfall till resurs: En studie om hinder och möjligheter för ökad återanvändning

Bygg- och anläggningssektorn står idag för en betydande del av Sveriges totala klimatpåverkan. En del av denna påverkan uppstår i samband med hantering av schaktmassor. Samtidigt ökar kraven för en mer hållbar framtid och en cirkulär ekonomi vilket medför att nya lösningar inom masshanteringen behöver hittas. Syftet med studien är att undersöka vilka hinder och möjligheter som finns för ökad återThe construction sector today stands for a significant amount of Sweden’s total climate impact. One part of this impact arises in regard to excavated soil. At the same time, demands for a more sustainable future and circular economy increase which in turn means new solutions regarding soil management are required. The purpose of this study is to research which obstacles and opportunities there ar

Spatiotemporal distribution of human trafficking in China and predicting the locations of missing persons

In China, the illegal adoption of missing persons and especially of missing children is a major public safety issue that affects social and family stability. Recent work has established a trafficking information network developed from a volunteer-managed database of missing persons that identifies and locates node cities and critical paths of illegal adoption. In order to evaluate locations where

The Emergency Medicine Education and Research by Global Experts (EMERGE) Network : Challenges and Lessons Learned

INTRODUCTION: The Emergency Medicine Education and Research by Global Experts (EMERGE) network was formed to generate and translate evidence to improve global emergency care. We share the challenges faced and lessons learned in establishing a global research network.METHODS: We describe the challenges encountered when EMERGE proposed the development of a global emergency department (ED) visit regi

Aktuella frågor ”Risken för rasprofilering är betydande med angiverilagen.”

Kritiken som har riktats mot regeringens angiverilag är högst befogad – förslaget innebär i praktiken att offentliganställda görs till gränspoliser, menar fyra forskare från universitet och högskolor i Lund, Malmö och Stockholm.En samförfattad debattartikel inom forskningsprojektet HUMASP, av Christina Johnsson, lektor i offentlig rätt och mänskliga rättigheter vid Malmö universitet. Jacob Lind, l

Intelligence penetration, counterintelligence, and the Iran–Israel covert struggle

The Israel – Iran intelligence contest exemplifies hybrid conflict conducted below the threshold of open war. This study examines Israel’s penetration of Iran’s intelligence and security apparatus and the Islamic Republic’s counterintelligence (CI) response using open-source material within a dual-lens framework. Lens 1 traces Israeli operations from early assassinations and cyber sabotage to the

Analys av geografiska data

I detta kapitel i boken Geografisk information Behandling beskrivs och behandlas metoder för hur geografisk data analyseras. Kapitlet omfattar såväl geografisk teori som exempel på tillämpningar. Geografisk informationsbehandling baseras på insamling, lagring, analys och visualisering av geografiska data, vilket också är bokens struktur. Denna åttonde upplaga av boken har uppdaterats med aktuella

Classifying urban land use by integrating remote sensing and social media data

Urban land use information plays an important role in urban management, government policy-making, and population activity monitoring. However, the accurate classification of urban functional zones is challenging due to the complexity of urban systems. Many studies have focused on urban land use classification by considering features that are extracted from either high spatial resolution (HSR) remo

Estimating the effects of “community opening” policy on alleviating traffic congestion in large Chinese cities by integrating ant colony optimization and complex network analyses

According to an urban planning directive issued by the Chinese Central Government in early 2016, the Community Opening Policy will be put on the agenda to ameliorate transportation networks, which has aroused much attention regarding the coming changes in traffic, especially in road network structures. Nevertheless, few studies were concerned with the direct and indirect impacts of opening gated c

Mining transition rules of cellular automata for simulating urban expansion by using the deep learning techniques

Along with the gradually accelerated urbanization process, simulating and predicting the future pattern of the city is of great importance to the prediction and prevention of some environmental, economic and urban issues. Previous studies have generally integrated traditional machine learning with cellular automaton (CA) models to simulate urban development. Nevertheless, difficulties still exist

Mapping fine-scale urban housing prices by fusing remotely sensed imagery and social media data

The accurate mapping of urban housing prices at a fine scale is essential to policymaking and urban studies, such as adjusting economic factors and determining reasonable levels of residential subsidies. Previous studies focus mainly on housing price analysis at a macro scale, without fine-scale study due to a lack of available data and effective models. By integrating a convolutional neural netwo

Fine-scale intra- and inter-city commercial store site recommendations using knowledge transfer

The rapid development of urban retail companies brings new opportunities to the Chinese economy. Due to the spatiotemporal heterogeneity of different cities, selecting a business location in a new area has become a challenge. The application of multi-source geospatial data makes it possible to describe human activities and urban functional zones at fine scale. We propose a knowledge transfer-based

Simulating urban land-use changes at a large scale by integrating dynamic land parcel subdivision and vector-based cellular automata

Cellular automata (CA) have been widely used to simulate complex urban development processes. Previous studies indicated that vector-based cellular automata (VCA) could be applied to simulate urban land-use changes at a realistic land parcel level. Because of the complexity of VCA, these studies were conducted at small scales or did not adequately consider the highly fragmented processes of urban

Exploring the spatial differentiation of urbanization on two sides of the Hu Huanyong Line – based on nighttime light data and cellular automata

The Hu Huanyong Line (Hu Line) shows an uneven geographical pattern of urbanization between Southeast and Northwest China. Based on three questions proposed by the Chinese Premier, the balance of urbanization on both sides of the Hu Line and the possibility of breaking through the pattern in the future has provoked substantial interest in academic circles. Based on quantitative analyses and urban

The Traj2Vec model to quantify residents’ spatial trajectories and estimate the proportions of urban land-use types

The formulation of mixed urban land uses is not only intended to find the ideal scenario of land use but also regarded as a way toward sustainable urban development. We propose a geo-semantic mining approach Traj2Vec to quantify the trajectories of residents as high-dimensional semantic vectors. Then, a random forest (RF) method is used to model the relationship between the semantic vectors and mi