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Hybridization is observed frequently in birds, but often it is not known whether the hybrids are fertile and if backcrossing occurs. The breeding ranges of the great reed warbler (Acrocephalus arundinaceus) and the clamorous reed warbler (A. stentoreus) overlap in southern Kazakhstan and a previous study has documented hybridization in a sympatric population. In the present study, we first present

Anomaly detection is emerging as a necessary component as wireless networks gain popularity. Anomaly detection has been addressed broadly in wired networks and powerful methods have been developed for correct detection of a variety of known attacks and other anomalies. In this paper, we propose a real-time anomaly detection and identification scheme for wireless mesh networks (WMN) using component

The polymeric immunoglobulin receptor (pIgR) is a key component of the mucosal immune system that mediates epithelial transcytosis of immunoglobulins. High pIgR expression has been reported to correlate with a less aggressive tumour phenotype and an improved prognosis in several human cancer types. Here, we examined the expression and prognostic significance of pIgR in pancreatic and periampullary

Forests are important from many perspectives. Forestry delivers products such as timber, fiber and fuel; forests are also important for recreational activities as well as for the global carbon balance. Consequently, it is important to develop methods that enable efficient monitoring of disturbances, such as insect attacks, over vast forested areas. These methods can be based on remote sensing, sin

Climate warming in the Swedish sub-Arctic since 2000 has reached a level at which statistical analysis shows for the first time that current warming has exceeded that in the late 1930' s and early 1940' s, and has significantly crossed the 0 degrees C mean annual temperature threshold which causes many cryospheric and ecological impacts. The accelerating temperature increase trend has driven simil

Continuously indexed Gaussian fields (GFs) are the most important ingredient in spatial statistical modelling and geostatistics. The specification through the covariance function gives an intuitive interpretation of the field properties. On the computational side, GFs are hampered with the big n problem, since the cost of factorizing dense matrices is cubic in the dimension. Although computational

A detailed diatom record from Lake Kälksjön, west-central Sweden, reveals two periods of abrupt ecological change correlative with the 8.2 ka cooling event. Using a combination of abrupt step changes and piece-wise linear regressions, the diatom data were analysed for change points over time, and two sudden and large events that are described as regime shifts were detected. During the first event

Knowledge of the forest biomass and its change in time is crucial to understanding the carbon cycle and its interactions with climate change. LiDAR (Light Detection and Ranging) technology, in this respect, has proven to be a valuable tool, providing reliable estimates of aboveground biomass (AGB). The overall goal of this study was to develop a method for assessing AGB using a synergy of low poin

Recent reports have demonstrated that hypoxia is widespread in the coastal zone of the Baltic Sea. Here we evaluate the long-term trends of dissolved oxygen in bottom waters and of the drivers of coastal hypoxia. Eleven of the 33 sites evaluated had increasing trends of bottom water dissolved oxygen, but only the Stockholm Archipelago presents a consistent positive increasing trend in time. The va

Objective In contrast with the wealth of data on ischaemic heart disease in rheumatoid arthritis (RA), data on stroke are scarce and contradictory. Despite the high clinical and aetiological relevance, there is no data regarding when (if ever) after RA diagnosis there is an increased risk. Our objective was to assess the risk of stroke (by subtype) in contemporary patients with RA, particularly in

Besides bone marrow, the kidneys are often dose-limiting organs in internal radiotherapy. The effects of high-linear energy transfer (LET) radiation on the kidneys after alpha-radioimmunotherapy (alpha-RIT) with the alpha-particle emitter, At-211, were studied in nude mice by serial measurements of the glomerular filtration rate (GFR). The renal toxicity was evaluated at levels close to the dose l

In this paper, we address distributed convergence to fair allocations of CPU resources for time-sensitive applications. We propose a novel resource management framework where a centralized objective for fair allocations is decomposed into a pair of performance-driven recursive processes for updating: (a) the allocation of computing bandwidth to the applications (resource adaptation), executed by t

BACKGROUND: For reasons that remain unclear, surgery for Graves' disease is associated with a higher risk of hypocalcemia than surgery for benign atoxic goiter. In the present study, we evaluated risk factors for postoperative hypocalcemia in patients undergoing operation for Graves' disease. METHODS: Data from 1,157 patients who underwent operation for Graves' disease between 2004 and 2008 were

The word “desertification” was introduced in 1949 by the French scientist Aubreville in his report “Climats, forêts et désertification de l´Afrique tropicale”. The concept, however, was discussed earlier by European and American scientists in terms of increased sand movements, desiccation, desert and Sahara encroachment and man made deserts. Desertification, at the beginning of last century, mea

Popular Abstract in Swedish Åldrandet har traditionellt förknippats med en reduktion av emotionella reaktioner. Denna syn har nu börjat ifrågasättas, trots att de flesta tidigare studier visat en åldersrelaterad minskning av psykofysiologiska reaktioner på affektiva stimuli. Det första syftet med denna avhandling var att undersöka effekter av åldrande på subjektivt upplevande av och psykofysiologiIt has long been thought that aging is accompanied by an emotional flattening. Although a different view has started to emerge recently, studies investigating psychophysiological responses in reaction to affective stimuli so far have reported an age-related reduction of the affective response. One of the main goals of this thesis was to revisit this issue by examining subjective reports, phasic he

Popular Abstract in Swedish Att balansera. Cancer från ett primärvårdsperspektiv. Diagnostik, posttraumatisk stress och vård vid livets slut Denna avhandling belyser cancer från en utgångspunkt som kanske inte handlar om vad man först kommer att tänka på när man hör ordet cancerforskning. Det handlar inte om att “lösa cancerns gåta” eller att hitta nya metoder för behandling eller diagnos. UtgångThis thesis explores cancer from a primary care perspective covering three areas: diagnosis, posttraumatic stress disorder (PTSD), and end-of-life care. We analyzed patient records of every child diagnosed with a malignancy in a defined area. During 12 years 68 children were diagnosed (incidence 14/100,000). For 68% the diagnosis was initiated in primary care. There were 25 children with leukemia

Oxygen (delta O-18) and carbon (delta C-13) isotope records of calcitic carbonate components (Chara sp. algal encrustations and Bithynia tentaculata gastropod opercula) from a lake-sediment succession on the Baltic Sea island of Gotland, south-eastern Sweden, have been obtained to investigate regional climate dynamics during the Holocene. The hydrological sensitivity of the small lake, particularl

Purpose - In order to improve cooperation and collaboration between units, clinics and departments, many health care organizations (HCOs) have introduced process orientation. Several studies indicate problems in realizing these ambitions. The purpose of this paper is to explain and understand the success and failure of process orientation in HCOs. Design/methodology/approach - The authors conducte

Occupational engagement is a vital factor in people's lives since it has been shown to be important for health and well-being. Community-based day centers (DCs), both meeting place-oriented and work-oriented ones, are common service alternatives in many western countries for enabling engagement in productive and leisure occupations among people with psychiatric disabilities. Little is, however, kn