Sökresultat

Popular Abstract in Swedish Resultaten som presenteras i denna doktorsavhandling visar att det går att spara stora mängder energi genom att använda samma typ av värmeväxlare, som normalt används i bilar och lastbilar, i livsmedelsbutikernas kyldiskar. För att hålla maten kall när den ligger ute i butiken cirkuleras en kyld luftström runt i kyldiskarna. Denna kyls i en så kallad värmeväxlare som Provisions are stored and displayed in supermarkets and grocery stores, at a temperature lower than the ambient, in display cabinets, which are responsible for a significant amount of the energy use in this sector. During the 1990s, major changes in the regulations governing the use of synthetic refrigerants took place in Sweden. This resulted in many refrigeration systems being converted to syste

This thesis consists of an introduction and four self-contained chapters that address issues of how organizations and institutions should be designed in order to provide adequate incentives and enable coordination. The first essay uses a multi-task principal-agent model to examine two reasons why coordination problems are common when public sector organizations share responsibilities: the incenti

Popular Abstract in English Over thirty years of experience shows that energy efficiency is the easiest, fastest, and cheapest strategy to reduce today’s rampant energy use. To enhance energy efficiency, governmental intervention and business strategies are needed. The question of which governmental policies are the most effective to support energy efficiency remains unanswered. Policy learning anExperience shows that energy efficiency improvements are the most cost-effective path to meeting global energy challenges. To promote energy efficiency, various policy instruments have been in place since the 1970s. Nevertheless, energy efficiency improvements still lag behind their potential in the building sector, which indicates that there is a lack of knowledge about the performance of policie

The ammoxidation of propane is commonly regarded as being the future route for producing acrylonitrile, and the Mo-V-Nb-Te-oxide system studied here has thus far been seen as the most promising candidate for achieving this. Yields of up to 62% have been presented very elegantly in the patent literature. A great disadvantage has been, however, that the crystalline quality of the catalyst tends to b

Beurling's theorem characterizes the forward shift invariant subspaces in the Hardy space $H^2$ on the open unit disk $\bold D$. The description is in terms of an inner function, that is, a function in $H^2$ whose nontangential boundary values have modulus $1$ almost everywhere. If $S$ stands for the forward shift $Sf(z)=zf(z)$, then the adjoint $L=S^*$ is the backward shift, $Lf(z)=\break (f(z)-f

One of the most important factors governing durability of concrete structures is reinforcement corrosion, and to prevent degradation associated with it, it is desirable to use large concrete covers. However, if the concrete cover is increased, the majority of design methods will predict that the crack widths at the concrete surface increase significantly. This can be contradictory, since the same

Swedish R&D activities in the field of IT and the environment - a mapping related to indirect environmental effects and effects at system level Feb 2009: Peter Arnfalk, Andrius Plepys, Chris van Rossem, The International Institute for Industrial Environmental Economics, Lund University. The International Institute for Industrial Environmental Economics (IIIEE) at Lund University has, in autumn

Betsafe is still a young company that have seen a great success in a short span of time. To remain successful it is therefore important that they don’t become complacent and remain visionary. However, a successful company must also balance its risk‐taking. In the end it is vital to find the right opportunities that fits the company and of course to be able to make the right decisions. In this proj

In today's society, companies are struggling to be heard and seen in the ever-increasing amount of information available on the market. A distinctive trademark has therefore become a very important means of communication for businesses. A trademark is often of considerable value in the form of goodwill and corporate image and is seen to communicate consumer attitude. An entire concept is not uI dagens samhälle kämpar företag för att höras och synas i det överflöd av information som finns tillgänglig. Ett särskiljande kännetecken har därmed blivit ett mycket viktigt kommunikationsmedel för företag. I detta kännetecken ligger ofta ett betydande värde i form av goodwill och image och attityd hos förbrukarna. Inte sällan är det hela koncept som förmedlas i ett komplicerat byggande av relat

Background. Natural gas makes a significant contribution to the current energy supply and its importance, in relation to both the German and worldwide energy supplies, will increase further in decades to come. In addition to its high degree of efficiency, the low level of direct GHG combustion emissions is also an advantageous factor. However, around 90% of natural gas is methane (CH4), which is t

Abstract The increased focus on social capital theory has made its way into labour economics. This has led to the creation of a vast literature about the use of networks and informal search methods in the labour-market, a literature that to some extent also deals with immigrants search behaviour and their relatively high unemployment rate. Characteristic for the literature in the area is the lack

Environmental impacts from passenger transportation continue to increase globally due to a rise in kilometers traveled and a shift to emission-intensive transportation modes (from public transportation and active modes such as walking and cycling to motorcycle and car ridership). The electrification of the passenger fleet, coupled with low-carbon energy sources, is expected to decrease some of the

Ambient fine particulate matter PM2.5 (particles with a diameter smaller than 2.5 μm) has been associated with cardiovascular and respiratory morbidity and mortality. It has been shown that biomass burning for heat production purposes can generate large amounts of fine particles. Thus characteristics of particle emissions from biofuel combustion may be important in the assessment of health effects

Fjärrvärme är en teknologi som har stor potential att bidra till att möjliggöra ett fossilfritt samhälle. För att uppnå denna potential, finns det dock en del förbättringar som måste göras för att förbättra fjärrvärmeverksamheten i stort, minska förlusterna från systemen och därmed öka konkurrenskraften hos fjärrvärme som teknologi. Ett flertal studier har visat att ett sätt att göra detta, och däDistrict Heating is a technology with the potential to enable a fossil-free society. However, to realize this potential, some improvements need to be made in order to improve District Heating operation at large, decrease losses in the systems, and thus increase the competitiveness of District Heating as a technology. Several have shown that a possible solution, to increase the efficiency of Distri

We can more and more often hear in the media about multinational corporations conducting human rights abuses. This is due to the fact that this discussion, surrounding corporations and human rights, is a hot item on the agenda today. Higher demands are put on the companies to follow human rights and to take more responsibilities in the promotion and protection of human rights. One of the reasons f

Under början av 1900-talet införde alla nordiska länder, förutom Norge, en möjlighet för frihetsberövade kvinnor att medföra sitt spädbarn i anstalten under straffverkställigheten. Regleringarna grundades på arvsbiologiska aspekter, då det var vanligt att de små barnen fortfarande ammades av sina mödrar och de var beroende av modersmjölken för att överleva. Med tiden har dock regleringarnas syfte In the beginning of the 20th century all Nordic countries except Norway introduced a possibility for imprisoned women to bring their infants with them during their sentence. The legislation was considered necessary due to the fact that the infant still was breast-fed by their mother. Child psychologist and psychoanalysist John Bowlby (from Great Britain) developed the affiliation theory during th

Global Enterprises today are dependent on performance within complex networks. To become effective and efficient, it is more important than ever to organize operations in order to capitalize on resources and to integrate different activities. This means that the supply chain and logistics have become core activities in international enterprises. Transportation has also become an issue based on the

Recent droughts from 2017 to 2020 induced significant stress on woodland canopies across eastern Australia, resulting in widespread tree browning and mortality. However, the trajectory of post-drought recovery remains unclear, with uncertainty about whether canopy conditions are improving or continuing to decline. Identifying the key local environmental and climatic factors influencing drought-ind

Salinity gradient energy (SGE) can play an important role in the energy transition from fossil-based sources to renewable sources. Its potential is estimated to be around 625 TWh·a-1 corresponding to 3% of global electricity consumption [1]. SGE sources are most abundant in the estuaries where rivers meet seawater. However, it is also available in different forms such as brackish water, brine etc