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Nonlinear optical response of Au metallic nanoparticles, synthesized and embedded in sapphire by using ion implantation, as a function of their size and shape is studied. The size of the Au NPs was varied by controlling the annealing time of the gold-irradiated sapphire in a reducing atmosphere. Their shape was changed from approximately spherical to prolate by swift heavy-ion irradiation using Si
Human-mediated changes in island vegetation are, among others, largely caused by the introduction and establishment of non-native species. However, data on past changes in non-native plant species abundance that predate historical documentation and censuses are scarce. Islands are among the few places where we can track human arrival in natural systems allowing us to reveal changes in vegetation d
Pollen plays a key role in plant reproductive biology. Despite the long history of research on pollen and pollination, recent advances in pollen-tracking methods and statistical approaches to linking plant phenotype, pollination performance, and reproductive fitness yield a steady flow of exciting new insights. In this introduction to the Special Issue “Pollen as the Link Between Phenotype and Fit
The occurrence of within-population variation in germination behavior and associated traits such as seed size has long fascinated evolutionary ecologists. In annuals, unpredictable environments are known to select for bet-hedging strategies causing variation in dormancy duration and germination strategies. Variation in germination timing and associated traits is also commonly observed in perennial
Reconstructions of past land use and related land-cover changes at local and regional scales are needed to evaluate the potential long-term impacts of land use on the coastal waters of the Baltic Sea. In this purpose, we selected the Gamleby area at the Swedish Baltic Sea coast for a case study. We use a new, high resolution pollen record from a small lake (Lillsjön) located 3.6 km NNW of the bay
The millennial-scale hydroclimate variability in East Asia has been debated for a long time due to the lack of reliable precipitation records from southern China and inconsistent model simulations. Here, we reconstruct a 40-kyr rainfall record for southern China and Taiwan based on enviro-magnetic and clay mineral proxy parameters from a northern South China Sea marine sediment core. Both proxies
Terrestrial organic matter (OM) plays a key role in coastal organic carbon burial. However, few studies focus on the relationship between land use in the watershed and the transport of terrestrial OM to coasts from a long-term perspective. In this study, we compared terrestrial OM deposition between an inlet of the Baltic Sea and an upstream lake within the same watershed over the last 500 years,
We systematically fabricate devices and analyse data for vertical InAs/(In)GaAsSb nanowire Tunnel Field-Effect Transistors, to study the influence of source dopant position and level on their device performance. The results show that delaying the introduction of dopants further in the GaAsSb source segments improved the transistor metrics (subthreshold swing and the ON-current performance), due to
Of concern is the fractional Kadomtsev–Petviashvili (fKP) equation and its lump solution. As in the classical Kadomtsev–Petviashvili equation, the fKP equation comes in two versions: fKP-I (strong surface tension case) and fKP-II (weak surface tension case). We prove the existence of nontrivial lump solutions for the fKP-I equation in the energy subcritical case α>45 by means of variational method
Exposure to extreme temperatures can negatively affect animal reproduction, by disrupting the ability of individuals to produce any offspring (fertility), or the number of offspring produced by fertile individuals (fecundity). This has important ecological consequences, because reproduction is the ultimate measure of population fitness: a reduction in reproductive output lowers the population grow
Recent discoveries of several Mesolithic sites within the Dagsmosse Basin, south-central Sweden, offer an opportunity to study the lifestyle and skillsets of Mesolithic hunter-gatherer-fishers operating in wetland environments. In this paper, we present a combined archaeological and palaeoecological analysis of a Mesolithic fenland environment using Repetitive-Proxy Pollen Analysis (RPPA) of early
The discrete Fourier transform (DFT) is one of the most important algorithms commonly used in baseband processing. While traditional hardware implemen- tations like the Fast Fourier Transform (FFT) are highly optimized, they heav- ily suffer from the von Neumann bottleneck. To overcome this, performing the computations directly in memory using memristive crossbar arrays is a promising solution. Th
Spel om pengar utgör en riskfylld del av dagens samhällshandel. Överdrivet spelande och de negativa konsekvenserna av spelande ämnas motverkas genom spelansvarsåtgärderna i spellagen (2018:1138). En av dessa ansvarsåtgärder är kreditförbudet, 14 kap. 8 § spellagen, som förbjuder licenshavare och spelombud från att själva erbjuda eller lämna kredit för spelinsatser. Regeringen har nyligen i prop. 2Gambling constitutes a risky aspect of today’s modern economy. Excessive gambling and the negative consequences of gambling are indented to be countered through the gambling responsibility measures in the Swedish Gambling Act (2018:1138). One of the responsibility measures is the credit ban, Chapter 14 Section 8 of the Gambling Act, which prohibits license holders and gambling agents from offering
En betydande andel av Sveriges företag utgörs idag av fåmansföretag, vilka spelar en avgörande roll för den svenska samhällsekonomin. Det är av stort värde att skapa goda förutsättningar för ägarskiften i befintliga fåmansföretag som möjliggör att upparbetade värden i företag med tillväxtpotential tillvaratas. Fåmansföretag omfattas idag av ett särskilt fördelningssystem, de s.k. 3:12 – reglerna. A significant proportion of Sweden's business currently consists of small companies with few employees, but these companies play a critical role in the Swedish economy. It is crucial to create good conditions for the transfer of ownership within existing private businesses and safeguard growth potential. These close companies are subject to a special regulation, the so called 3:12- rules. The
To this day, the question of what factors drive economic development and catching-up remains deeply controversial in growth literature. The concept of social capability provides a useful framework to investigate the relationship of the parallel processes of transformation, inclusion, autonomy and accountability with economic performance. Nevertheless, there are few attempts to quantify social capa
