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By using an integrated dynamic model we are able to reconstruct the supply and gold price of the past (1920-2010) and this is used to predict the future supply of gold to the market and to make a forecast of the goldprice 2010-2100. The model was validated against field data for the period 1920-2010 and it performs well. The model GOLD is implemented in the STELLA® software and the model described
The growing interest in sustainable development indicators (SDI) has resulted in the development and application of various SDI frameworks in the past two decades. Identification and selection of “right” indicators with such frameworks are essential, in the sense that, it is the information from these indicators that will help policy and decision makers to better understand the efficiency, effecti
Despite the potential of smart home technologies (SHT) to support everyday activities, the implementation rate of such technology in the homes of older adults remains low. The overall aim of this study was to explore factors involved in the decision-making process in adopting SHT among current and future generations of older adults. We also aimed to identify and understand barriers and facilitator
The purpose of this project was to find estimates of the operational releases of 14C and 3H from new SMR technology that is being considered in Sweden, namely the Rolls-Royce SMR and the GE-Hitachi BWRX-300. To achieve this goal, models of the reactors of interest were made in the continuous-energy Monte-Carlo neutron and photon transport code Serpent, where the production of 14C and 3H could then
The theme of this paper is the encounter between law and moral. It examines human smuggling with humanitarian reasons, which in Swedish law is regulated in 20 chapter 8 § Utlänningslagen. In preparatory work a humanitarian exemption has been discussed but the applicability of the exemption is unclear, as it has not yet been used in case-law. The discussion is founded on four theories of the moral
The progression of fire safety research has contributed to improving the guiding principles of standardised building design. Research making use of pure materials, once common in homes and workplaces, are less relevant as such materials are no longer as prevalent. It is often newer, composite materials that are featured more prominently in building contents. The trend towards the evolution of comm
Popular Abstract in English The two most used building materials in harbor structures are undoubtedly steel and concrete. These two materials are often combined in the structures of wharfs and quays where most steel sheet pile walls have cap beams of reinforced concrete. The degradation processes of these structures must be taken into account both when designing new structures and when inspecting The two most used building materials in harbor structures are undoubtedly steel and concrete. These two materials are often combined in the structures of wharfs and quays where the steel sheet pile walls often have cap beams of reinforced concrete. The degradation processes of these structures must be taken into account both when designing new structures and when inspecting existing harbor structu
Climate change and disasters pose a serious risk to sustainable development. In the South local coping strategies are an important element of adaptation to climate and disaster risk. Such strategies have arisen because of the limited assistance provided by urban actors and associated social security and governance systems. In contrast, in the North local coping strategies are comparatively poorly
The development of integrated pest management is hampered by lack of information on how insect pest abundances relate to yield losses, and how pests are affected by control measures. In this study, we develop integrated pest management tactics for Apion spp. weevils (Coleoptera: Brentidae) in seed production of red clover, Trifolium pratense L. We tested a method to forecast pest damage, quantifie
The world supply and turnover of copper was modelled using simple empirical estimates and a COPPER systems dynamics model developed for this study. The model combines mining, trade markets, price mechanisms, population dynamics, use in society and waste as well as recycling, into a whole world system. The degree of sustainability and resource time horizon was estimated using four different methods
Heterogena katalysatorer för användning i bränslecellssystem har undersökts baserat på aktiv fas och tillverkningsmetoder för granulat- och monolitkatalysatorer. Katalysatorerna tillverkades genom att använda θ – aluminiumoxid som bärare, dopad med lantan och cerium, där den aktiva fasen bestod av ädelmetall X och nickel i varierande halter. Analys gjordes genom att låta en blandning av vattenångaHeterogeneous catalysts to be used in a pre-reformer for fuel cell systems have been investigated based on active phase composition and catalyst preparation methods for granulate and monolithic catalysts. The catalysts were manufactured using θ – aluminum oxide as carrier, promoted with lanthanum and cerium, with active phases consisting of noble metal X and nickel in various concentrations. Analy
Investors are constantly searching for ways to protect their wealth, ideally without losing out on long-term returns. To achieve this, some investors choose to diversify their equity portfolios with fixed income assets, believing they can protect their portfolios from drawdowns. However, the current literature is divided on the effectiveness of fixed income assets as a shock-absorber during severe
Barefoot doctor system is an important part of primary health care policy changes in China after the founding of New China, is a special viewpoint to study the special period of grassroots political change. Why medical care’s come into the sight of top leaders at that time? What does medical care system mean to modern state building? There may be a certain natural link between the body and the nat
Green hydrogen is an advantageous clean energy carrier that enables the decarbonization of hard-to-abate sectors and addresses the intermittency of renewables. However, its global production is currently constrained by inadequate infrastructure, high investment risks, and relatively technological infancy. Failure to scale green hydrogen could hinder decarbonization efforts and climate goals. Recog
The search for greener ways of producing plastic has been a very popular field for the last few years. One avenue of research focuses on separating plastic production from the fossil fuel industry by finding bio-based alternatives. This is the case of the research conducted by our collaborators at Biotechnology who are trying to use Escherichia coli to produce 1,4-butanediol, a precursor to many p
Time-dependent ensemble averages, i.e., trajectory-based averages of some observable, are of importance in many fields of science. A crucial objective when interpreting such data is to fit these averages (for instance, squared displacements) with a function and extract parameters (such as diffusion constants). A commonly overlooked challenge in such function fitting procedures is that fluctuations
