The frequency of two external cavity diode lasers tuned to the two transitions at 410 nm and 451 nm of indium are stabilized in this thesis. A hollow cathode lamp of indium atoms is used as a low pressure source of indium atoms in the locking process. Two frequency stabilization methods, wavelength modulation spectroscopy (WMS) and polarization spectroscopy (PS), are used in the thesis for the las

Barn- och ungdomsorganisationers syn och förhållningssätt till medlemskapet skiljer sig i jämförelse med andra ideella organisationer. Medlemskapets funktion och betydelse är fortsatt viktig men i arbetet för och med barn- och ungdomar framkommer att förhållningssättet till medlemskapet och dess dimensioner är mera flexibelt samt kan också uppfattas som ett hinder.

Att realisera outnyttjad potential – Om webbaserad samredovisning av BIM- och GIS-data En arkitekt placerar in sitt ännu bara tänkta hus i en realistisk 3D-modell av den omgivande staden för att visa allmänhet och beställare hur det kommer bli. En projektör lägger sin tunnel genom en tredimensionell geologisk karta och hittar snabbt och lätt tänkbara problemområden. Kart-appen på mobilen kan intCombined presentations of BIM- and GIS-data Throughout the process of creating and maintaining our built environment, from planning to building to facility management, large amounts of data are produced and consumed. Much of these are geographic data, processed in some form of GIS (Geographical Information System). Others are building data, increasingly handled in different BIM (Building Informati

Environmental problems commonly occur in the aftermath of natural disasters. If not managed properly, they jeopardise the success of the entire recovery process. The humanitarian sector has realised this threat and is looking for ways to properly mitigate environmental problems while maintaining their necessary flexibility. The conventional industry broadly uses environmental management systems (E

We have implemented an Intelligent Tutoring System (ITS) prototype for teaching multi-column addition and subtraction to children aged 5-10, using a digitalized version of the Montessori bank game exercises. An Intelligent Tutoring System is a piece of software that teaches a certain subject to its users, and that typically uses artificial intelligence related algorithms to personalize the educati

High Arctic wetlands are an important component of the global climate system. Nevertheless estimations of their expected response to climate change and associated climate-feedbacks have large uncertainties. Improving models for vegetation and carbon dynamics of ecosystems is an important step towards making predictions more accurate. In this study, an arctic-enabled version of the LPJ-GUESS dynam

Exchange rate volatility has been regarded as a vital macroeconomic concern for the policy makers and its impact on economic growth has gained much attention from the researchers in recent years. Existing studies tried to analyze the impact focusing on financial development. In contrast, we have given effort to examine it taking into account the trade dependence of the country. A panel of seven de

Unlike other environmental threats, the loss of biodiversity is irreversible and the current and rapid loss of species is alarming. Several authors agree the state-owned protected areas are not sufficient to lessen biodiversity loss which is accentuated because most of the biodiversity is on private land. In this thesis, I study private conservation’s role as a tool for biodiversity conservation a

Flying insects are able to negotiate complex environments such as tropical rainforests as well as less complex environments such as flowering meadows although little is known about how they avoid collisions while doing this. In this study, insect negotiation through holes was investigated using Bumblebees Bombus terrestris and Orchid bees Euglossa imperialis as test animals. This was done by allow

None of us are immune to the ongoing identity-processes. Identity formation is something that we are engaged in every day, both in our consciousness and our subconsciousness, from the society levels down to personal levels. This study examines how individuals with Assyrian background form their identities in Sweden. Questions on ”homeland” and ”home”, and statelessness are asked to contribute to t

I denna uppsats undersöks det om det finns en bostadsbubbla på den svenska bostadsmarknaden. Det görs med hjälp av de oberoende variablerna byggnadskostnader, befolkning och reporäntan för Stockholm, Malmö och Göteborg i en regression där en kvot mellan fastighetsprisindex och disponibel inkomst för respektive storstad fungerar som den beroende variabeln. Mitt ekonometriska resultat säger tyvärr i

Degrowth refers to an alternative human society which is simplistic, cooperative and opposite of current growth system which is based on overproduction and overconsumption. The current growth trend is indisputably unsustainable for the future being of the earth and its’ population. Resource depletion, land degradation and climate change have become inevitable due to growth system, overproduction a

Stadsmiljöer är ofta sårbara vid katastrofer eller extrema väderhändelser. En anledning till detta är att stora delar av de tätbebyggda områden som utgör en stadsmiljö består av ytor som inte tillåter vatteninfiltrering. Detta kan medföra att vissa områden i en stad är mer benägna än andra att drabbas av översvämning. Att lokalisera översvämningsbenägna ytor är en viktig del i en stads uppbyggnad Impervious surfaces, such as large parts of the urban area, reduce infiltration and increase above ground runoff (Chen et al. 2009) with risk of flooding as a result. Urban flooding has the potential to affect a large amount of people, and can cause great harm to economic interests. Therefore it is important to locate potential areas prone to flooding, and have storm water regimes in mind when pla

Örups almskog has been described several times over the past 300 years. The forest has been a protected area since 1928, and when the aggressive strain of Dutch elm disease struck the region in 1979, it affected the forest in Örup for decades to come. Elms was the dominant tree species in the forest, and Dutch elm disease resulted in a high mortality for the elms. In Sweden Dutch elm disease was f

Exploring problem representations in the policy discourses on the parental leave insurance and cash-for-childcare (CFC) allowance in Swedish parliamentary debates, this study aims to look into different meanings and problematizations attached to the concept of gender equality in Swedish family policy. Comparing the framing of problematizations in these policies, the objective is to uncover underly

This paper explores how effective the Danish Greencard opt-out is in impeding the process of Europeanization. It investigates the cases of the Danish Greencard scheme and the German EU Blue Card directive in order to determine if national Danish sovereignty has been preserved through this opt-out. Opt-outs and high-skill migration are some of the most under evaluated topics within the field of Eur

The radiological footprint of a Be-based neutron source embedded within the Aquarium of the Source-Testing Facility (STF) at the Division of Nuclear Physics at Lund University will soon be carefully mapped. As a precursor to this measurement program, neutron and gamma-ray energy spectra at beamport apertures have been measured using 3He and LaBr3(Ce) (cerium-activated lanthanum bromide) detectors.

The Egyptian Revolution of 2011 opened up the public space for Egyptian women from very different backgrounds. However, although women played a decisive role in revolutionary events, this did not result in the abolishment of the patriarchal bargain between Egyptian secular-oriented female feminists and the state in post-Mubarak Egypt. Even though certain conditions caused the suspension of the pat