| 1. |
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| 2. |
- Högberg, Peter, et al.
(författare)
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Factors determining the 13C abundance of soil-respired CO2 in Boreal forests
- 2005
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Ingår i: Stable isotopes and biosphere-atmosphere interactions. - : Elsevier. - 9780120884476 ; , s. 47-68
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Bokkapitel (refereegranskat)abstract
- Analysis of the isotopic composition of the CO2 respired from soils may reveal information about the important component of the ecosystem C balance. This is crucial, since a large terrestrial sink for atmospheric CO2 has been located in the northern hemisphere, and the vast boreal forests may be largely responsible. At the same time, boreal and arctic ecosystems have large amounts of C stored in the soil, and could potentially become a source of CO2 in a warmer climate promoting more rapid decomposition of soil organic matter. Furthermore, the northern hemisphere has complex dynamics in terms of annual fluctuations in both the concentration of CO2 in the atmosphere and its δl3C. It is of utmost importance to understand the causes of this variability, since it interferes with the partitioning between the ocean and the terrestrial contributions in global models. This chapter aims to provide an update on the reviews by Flanagan and Ehleringer and Ehleringer et al. on the causation of the δ13C of the soil CO2 efflux and, in doing this, focuses on the boreal forests.
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| 3. |
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| 4. |
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| 5. |
- Högberg, Mona N., et al.
(författare)
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Contrasting effects of nitrogen availability on plant carbon supply to mycorrhizal fungi and saprotrophs - a hypothesis based on field observations in boreal forest
- 2003
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Ingår i: New Phytologist. - : Wiley. - 1469-8137 .- 0028-646X. ; 160:1, s. 225-238
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Tidskriftsartikel (refereegranskat)abstract
- Soil microorganisms are considered C-limited, while plant productivity is frequently N-limited. Large stores of organic C in boreal forest soils are attributed to negative effects of low temperature, soil acidity and plant residue recalcitrance upon microbial activity. We examined microbial activity, biomass and community composition along a natural 90-m-long soil N supply gradient, where plant species composition varies profoundly, forest productivity three-fold and soil pH by three units. There was, however, no significant variation in soil respiration in the field across the gradient. Neither did microbial biomass C determined by fumigation-extraction vary, while other estimates of activity and biomass showed a weak increase with increasing N supply and soil pH. Simultaneously, a phospholipid fatty acid attributed mainly to mycorrhizal fungi declined drastically, while bacterial biomass increased. We hypothesize that low N supply and plant productivity, and hence low litter C supply to saprotrophs is associated with a high plant C supply to mycorrhizal fungi, while the reverse occurs under high N supply. This should mean that effects of N availability on C supply to these functional groups of microbes acts in opposing directions.
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| 6. |
- Högberg, Niclas, 1979-, et al.
(författare)
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Intestinal intraluminal glycerol and plasma I-FABP levels in preterm infants with necrotizing enterocolitis
- 2016
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Ingår i: Clinics in Surgery. ; 1:1085, s. 1-6
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Tidskriftsartikel (refereegranskat)abstract
- Background/Purpose: Necrotizing enterocolitis (NEC) is highly associated with prematurity and is characterized by bowel necrosis and multi-organ failure. There is a strong need for improved diagnostic methods to reduce the significant morbidity and mortality associated with NEC. The aim of this single centre prospective study was to investigate the possibility to detect early signs of NEC, by using rectal intraluminal microdialysis and plasma intestinal fatty acid binding protein (I-FABP) in preterm infants admitted to a level III neonatal intensive care unit.Methods: The study was performed on extremely preterm infants with a gestational age of less than 28 weeks. During a 4-week period after birth, rectal intraluminal microdialysate levels of glucose, lactate, pyruvate and glycerol were measured, and plasma was collected for I-FABP analysis. Infants not developing NEC served as controls. Results: Microdialysis revealed signs of intestinal hypoxic or ischemic damage and cell membrane degradation, with a marked increase of both intraluminal glycerol and plasma I-FABP in infants developing NEC, as well as in infants suffering from other complications. The microdialysate levels of glucose, lactate and pyruvate were too low to be evaluated in this setting. All infants tolerated the microdialysis well without any complications.Conclusion: Elevated levels of intraluminal glycerol and plasma I-FABP suggests mucosal cell membrane degradation and hypoxic or ischemic damage in preterm infants developing NEC, as well as in preterm infants suffering from other complications such as volvulus, sepsis or respiratory distress. However, it was not possible to predict development of NEC before clinical diagnosis using these markers.
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| 7. |
- Högberg, Peter, et al.
(författare)
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Large-scale forest girdling shows that current photosynthesis drives soil respiration
- 2001
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Ingår i: Nature. - : Springer Science and Business Media LLC. - 0028-0836 .- 1476-4687. ; 411:6839, s. 789-792
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Tidskriftsartikel (refereegranskat)abstract
- The respiratory activities of plant roots, of their mycorrhizal fungi and of the free-living microbial heterotrophs (decomposers) in soils are significant components of the global carbon balance, but their relative contributions remain uncertain. To separate mycorrhizal root respiration from heterotrophic respiration in a boreal pine forest, we conducted a large-scale tree-girdling experiment, comprising 9 plots each containing about 120 trees. Tree-girdling involves stripping the stem bark to the depth of the current xylem at breast height terminating the supply of current photosynthates to roots and their mycorrhizal fungi without physically disturbing the delicate root-microbe-soil system. Here we report that girdling reduced soil respiration within 1-2 months by about 54% relative to respiration on ungirdled control plots, and that decreases of up to 37% were detected within 5 days. These values clearly show that the flux of current assimilates to roots is a key driver of soil respiration; they are conservative estimates of root respiration, however, because girdling increased the use of starch reserves in the roots. Our results indicate that models of soil respiration should incorporate measures of photosynthesis and of seasonal patterns of photosynthate allocation to roots.
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| 8. |
- Persson, Jörgen, et al.
(författare)
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Nitrogen acquisition from inorganic and organic sources by boreal forest plants in the field
- 2003
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Ingår i: Oecologia. - : Springer Science and Business Media LLC. - 0029-8549 .- 1432-1939. ; 137:2, s. 252-257
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Tidskriftsartikel (refereegranskat)abstract
- A wide range of recent studies have indicated that organic nitrogen may be of great importance to plant nitrogen (N) nutrition. Most of these studies have, however, been conducted in laboratory settings, excluding important factors for actual plant uptake, such as competition, mycorrhizal associations and soil interactions. In order to accurately evaluate the importance of different N compounds to plant N nutrition, field studies are crucial. In this study, we investigated short- as well as long-term plant nitrogen uptake by Deschampsia flexuosa, Picea abies and Vaccinium myrtillus from 15NO3-, 15NH4+ and (U-13C, 15N) arginine, glycine or peptides. Root N uptake was analysed after 6 h and 64 days following injections. Our results show that all three species, irrespective of their type of associated mycorrhiza (arbuscular, ecto- or ericoid, respectively) rapidly acquired similar amounts of N from the entire range of added N sources. After 64 days, P. abies and V. myrtillus had acquired similar amounts of N from all N sources, while for D. flexuosa, the uptake from all N sources except ammonium was significantly lower than that from nitrate. Furthermore, soil analyses indicate that glycine was rapidly decarboxylated after injections, while other organic compounds exhibited slower turnover. In all, these results suggest that a wide range of N compounds may be of importance for the N nutrition of these boreal forest plants, and that the type of mycorrhiza may be of great importance for N scavenging, but less important to the N uptake capacity of plants.
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| 9. |
- Abdurahman, Samir, 1965-, et al.
(författare)
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Isolation and characterization of a small antiretroviral molecule affecting HIV-1 capsid morphology
- 2009
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Ingår i: Retrovirology. - : Springer Science and Business Media LLC. - 1742-4690. ; 6, s. 34-
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Tidskriftsartikel (refereegranskat)abstract
- Background: Formation of an HIV-1 particle with a conical core structure is a prerequisite for the subsequent infectivity of the virus particle. We have previously described that glycineamide (G-NH2) when added to the culture medium of infected cells induces non-infectious HIV-1 particles with aberrant core structures. Results: Here we demonstrate that it is not G-NH2 itself but a metabolite thereof that displays antiviral activity. We show that conversion of G-NH2 to its antiviral metabolite is catalyzed by an enzyme present in bovine and porcine but surprisingly not in human serum. Structure determination by NMR suggested that the active G-NH2 metabolite was alpha-hydroxy-glycineamide (alpha-HGA). Chemically synthesized alpha-HGA inhibited HIV-1 replication to the same degree as G-NH2, unlike a number of other synthesized analogues of G-NH2 which had no effect on HIV-1 replication. Comparisons by capillary electrophoresis and HPLC of the metabolite with the chemically synthesized alpha-HGA further confirmed that the antiviral G-NH2-metabolite indeed was alpha-HGA. Conclusion: alpha-HGA has an unusually simple structure and a novel mechanism of antiviral action. Thus, alpha-HGA could be a lead for new antiviral substances belonging to a new class of anti-HIV drugs, i.e. capsid assembly inhibitors.
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| 10. |
- Alfsdotter, Clara, 1988-
(författare)
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Bad Death at Sandby borg : A Bioarchaeological Analysis of Intergroup Violence and Postmortem Agency of Unburied Corpses
- 2018
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The subject of corpses from mass violence is surprisingly unexplored, even though the materiality of the corpse carries strong symbolic capital in conflicts. The aim of my PhD research is to create new knowledge about the implications of unburied corpses that stem from intergroup conflicts, and subsequently to add knowledge concerning how intergroup violence is organised to achieve desired social agendas.In the licentiate thesis presented here, I research the conditions for postmortem agency and how treatment of corpses can be studied in prehistory, specifically through the material remains of unburied corpses from the Sandby borg massacre. The Sandby borg case study is explored through a bioarchaeological perspective. Inside the Iron Age ringfort, the remains of at least 26 individuals have been recovered hitherto. Several of the dead display traces of lethal intergroup violence. By integrating osteology, archaeology, taphonomy and social theories, I show how bioarchaeological research can contribute to the understanding of past postmortem agency in relation to intergroup violence as a social process. The thesis is comprised of four articles.
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| 11. |
- Alfsdotter, Clara, 1988-
(författare)
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The Corporeality of Death : Bioarchaeological, Taphonomic, and Forensic Anthropological Studies of Human Remains
- 2021
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The aim of this work is to advance the knowledge of peri- and postmortem corporeal circumstances in relation to human remains contexts, as well as to demonstrate the value of that knowledge in forensic and archaeological practice and research. This article-based dissertation encompasses papers in bioarchaeology and forensic anthropology, with an emphasis on taphonomy. The studies include analyses of human osseous material and human decomposition in relation to spatial and social contexts, from both theoretical and methodological perspectives.Taphonomic knowledge is vital to interpretations of the circumstances of peri- and postmortem deposition, with a concern for whether features were created by human hand or the result of decomposition processes and other factors. For example, taphonomic knowledge can aid interpretations of the peri- and postmortem sequence of events, of the agents that have affected human remains, as well as for estimations of time since death. When integrated with social theories, taphonomic information can be used to interpret past events. In this dissertation, a combination of bioarchaeological and forensic taphonomic methods are used to address the question of what processes have shaped mortuary contexts. Specifically, these questions are raised in relation to the peri- and postmortem circumstances of the dead in the Iron Age ringfort of Sandby borg, and about the rate and progress of human decomposition in a Swedish outdoor environment and in a coffin. Additionally, the question is raised of how taphonomic knowledge can inform interpretations of mortuary contexts, and of the current state and potential developments of forensic anthropology and archaeology in Sweden. The result provides us with information of depositional history in terms of events that created and modified deposits of human remains. Furthermore, this research highlights some limitations in taphonomic reconstructions. The research presented here is helpful for interpretations of what has occurred in the distant as well as recent pasts, to understand potentially confounding factors, and how forensic anthropology can benefit Swedish crime scene investigations. In so doing, the knowledge of peri- and postmortem corporeal circumstances and how it can be used has been advanced in relation to both the archaeological and forensic fields.
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| 12. |
- Ali, Imran, et al.
(författare)
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Exposure to polychlorinated biphenyls and prostate cancer : population-based prospective cohort and experimental studies
- 2016
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Ingår i: Carcinogenesis. - : Oxford University Press. - 0143-3334 .- 1460-2180. ; 37:12, s. 1144-1151
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Tidskriftsartikel (refereegranskat)abstract
- Polychlorinated biphenyls (PCBs) are highly persistent environmental pollutants and are undesirable components of our daily food. PCBs are classified as human carcinogens, but the evidence for prostate cancer is limited and available data are inconsistent. We explored the link between non-dioxin-like PCB and grade of prostate cancer in a prospective cohort as well as in cell experiments. A population-based cohort of 32496 Swedish men aged 45-79 years was followed prospectively through 1998-2011, to assess the association between validated estimates of dietary PCB exposure and incidence of prostate cancer by grade (2789 cases, whereof 1276 low grade, 756 intermediate grade, 450 high grade) and prostate cancer mortality (357 fatal cases). In addition, we investigated a non-dioxin-like PCB153-induced cell invasion and related markers in normal prostate stem cells (WPE-stem) and in three different prostate cancer cell lines (PC3, DU145 and 22RV1) at exposure levels relevant to humans. After multivariable-adjustment, dietary PCB exposure was positively associated with high-grade prostate cancer, relative risk (RR) 1.35 [95% confidence interval (CI): 1.03-1.76] and with fatal prostate cancer, RR 1.43 (95% CI: 1.05-1.95), comparing the highest tertile with the lowest. We observed no association with low or intermediate grade of prostate cancer. Cell invasion and related markers, including MMP9, MMP2, Slug and Snail, were significantly increased in human prostate cancer cells as well as in prostate stem cells after exposure to PCB153. Our findings both from the observational and experimental studies suggest a role of non-dioxin-like PCB153 in the development of high-grade and fatal prostate cancer.
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| 13. |
- Annersten, Magdalena, et al.
(författare)
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Structured diabetes education in Sweden : a national inquiry involving 583 nurses working with diabetes patients in hospitals and primary care facilities.
- 2006
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Ingår i: Practical Diabetes International. - : John Wiley & Sons. - 1357-8170 .- 1528-252X. ; 23:3, s. 138-141
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Tidskriftsartikel (refereegranskat)abstract
- The overall goals for the treatment of diabetes are to prevent acute and long-term complications and maintain a good quality of life. The St Vincent Declaration and the Swedish National Guidelines for the Treatment of Diabetes Mellitus describe patient education in self-treatment as a prerequisite for the achievement of these goals. This survey aimed to evaluate the presence of structured patient education (in advance planned education), its organisation, staffing and goals, and the results in out-patient diabetes care in Sweden.A questionnaire consisting of 35 open and closed questions was mailed to 1250 diabetes educated nurses working in hospitals and primary health care in the entire country.Responses were received from 583 (47%) nurses. Structured diabetes patient education was performed by 486 nurses. It was usually organised by nurses and performed in co-operation with doctors (55%), dietitians (38%), chiropodists (36%), and social workers (9%). The sessions took place individually at pre-scheduled visits (80%), or as group education (26%). Fifty-one percent described explicit goals for the education, most commonly: general knowledge about diabetes, improved metabolic control and increased safety. The structured education was evaluated by 51% of which the HbA[1]c level at the next scheduled visit was the most frequently used evaluation method (44%), followed by home monitored blood glucose values (37%) and a structured evaluation form (17%). The goals had been achieved to a great or quite great extent by 67% of the responding nurses.To the extent that structured patient education takes place, nurses are usually responsible for its performance. It takes place individually as well as in groups. Many nurses lack evident goals for the education and sufficient evaluation methods.It was concluded that there is confusion about the content of structured education vs information activity.
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| 14. |
- Auer, Jaqueline, et al.
(författare)
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Assessing the digestibility and estimated bioavailability/bioaccessibility of plant-based protein from soy, pea and faba bean ingredients.
- 2024
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Ingår i: LWT - Food Science and Technology. - 1096-1127 .- 0023-6438. ; 197
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Tidskriftsartikel (refereegranskat)abstract
- Concerns have been raised about the nutritional adequacy of plant-based foods due to the presence of antinutrients and overall low protein digestibility. Therefore, this study characterizes the estimated bioavailability/bioaccessibility of iron and zinc and the protein digestibility of 11 commercially available plant-based ingredients to assess their potential in the future development of nutritious plant-based foods. The accessibility of iron and zinc was limited in all ingredients, with only faba bean isolate, pea isolate, faba bean concentrate and texturized pea containing accessible iron. Faba bean isolate was found to have the highest amount of accessible iron (67.4 mg/kg) whereas textured pea showed the lowest amount (0.5 mg/kg). The estimated bioavailability of iron and zinc, based on the calculated molar ratio of phytate, was low for all studied ingredients, with isolates showing the highest overall tendency for available iron and zinc. The amino acid composition data revealed limitations regarding valine and/or isoleucine in all protein concentrates and texturized proteins, soy isolate, and faba bean flour. In contrast, no significant differences were found in overall protein digestibility, suggesting that all tested raw materials, including faba bean, can be considered good protein sources.
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| 15. |
- Berg, Lotta, et al.
(författare)
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Digital tillsynsteknik i djurhållning utomhus
- 2020
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- I enlighet med Jordbruksverkets förfrågan behandlar denna rapport tre områden för digital teknik vid övervakning och kontroll av djur som vistas utomhus på stora ytor: (1) kamerateknologi, t.ex. användning av drönare, (2) positioneringsteknologi som GPS och (3) teknologi för att styra djurens rörelser, som drivning med drönare och användning av s.k. virtuella stängsel. De tre teknikområdena överlappar delvis varandra. Digital tillsyn av utegående djur är beroende av att sensorer mäter det man tror att de mäter med tillräcklig noggrannhet och att data kan överföras och bearbetas till information som lagras och analyseras på ett säkert och korrekt sätt. Sådana teknologier benämns med samlingsnamnet ’Precision Livestock Farming’ (PLF). Användningen av informationen är avgörande för teknikens användbarhet i tillsyns- och djurskyddsarbete. Tillämpningarna är till viss del reglerade av gällande lagstiftning, exempelvis genom krav på tillsyn, begränsad användning av elektricitet för att styra djurs beteende, användning av obemannade luftfarkoster, d.v.s. drönare, samt åtgärder för att förhindra att utrustning skadar djuren eller påverkar deras hälsa och beteende. Inom PLF används en rad olika sensorer som direkt eller indirekt kan mäta djurens miljö och djurens beteende och fysiologiska tillstånd. Den teknologiska utvecklingen har främst varit inriktad på mjölkkor, fjäderfän och grisar och endast i liten utsträckning berört häst, får och get. För djur på bete är överföringen av data från en enhet på eller vid djuret till en mottagare särskilt problematisk p.g.a. stora avstånd, men det sker en snabb teknisk utveckling mot effektivare överföring. PLF-teknologin innebär i de flesta fall att djuren övervakas kontinuerligt och att avvikelser i t.ex. deras hälsotillstånd och välfärd i princip kan upptäckas i realtid, vilket ska ställas mot nuvarande lagkrav på tillsyn minst en eller två gånger dagligen. Sensorer kan ge information om ett stort antal fysiologiska tillstånd och beteenden. En av de vanligaste teknikerna är sensorer för aktivitet. Indirekt kan de också ge information om idissling, liggtid, stegantal och ättid och utlösa larm om exempelvis brunst, hälsoproblem, hälta och kalvning. Sensorer kan även placeras i förmagen hos idisslare (s.k. våmbolus) där de mäter våm-pH och kan larma om störningar i magfunktionen, eller utformas som termometrar som kan larma om hälsostörningar, kalvning och vattenintag eller mikrofoner som kan mäta idissling och larma om brunst, kalvning och onormalt idisslingsmönster. Med kamerateknik kan man mäta aktivitet, kroppsform och hudtemperatur, vilket kan ge information om ketosstatus, hull, hälta och juverhälsa. Kameror monterade på drönare kan användas för att lokalisera och räkna djur, bestämma deras position, habitatval och till viss del deras beteende, särskilt när djuren rör sig över stora arealer. Det finns flera elektroniska positioneringsteknologier varav passiv ’Radio Frequency Identification RFID’ är den vanligaste. Räckvidden är kort med denna teknik men den kan vara användbar om man t.ex. vill mäta hur ofta djuren besöker en vattenpost. Andra teknologier kan med hjälp av antenner följa djurens positioner i realtid. GPS-enheter monterade i halsband kan regelbundet registrera djurens geografiska position. Användningen av GPS har blivit relativt vanlig i renskötseln vilket tycks ha lett till en förbättrad arbetssituation för renskötarna. Positionering med GPS ger inte alltid exakta uppgifter men tekniken har visat sig användbar för studier av habitatval, sociala interaktioner och gruppdynamik. Med positionerna från GPS har man också kunnat styra djur till områden med bättre betestillgång. Med en tillräckligt frekvent bestämning av position med hjälp av GPS (ca en gång per minut) är det möjligt att bestämma betestiden för nötkreatur på ett tillförlitligt sätt. En användning av drönare i djurskötsel och djurtillsyn kan vara att med hjälp av kamera lokalisera djuren över stora ytor. Denna användning begränsas dock av nuvarande bestämmelser om att föraren måste ha ögontakt med drönaren. I renskötseln har drönare börjat användas för att förflytta djur men denna tillämpning är ännu inte juridiskt reglerad. Virtuella stängsel är strukturer som bestäms med kartkoordinater eller elektronisk sändare på marken. Stängslen fungerar som inhägnader, hinder eller gränser. Djuren mottar signaler (vanligen ljud) och stimuli (vanligen elstötar från ett halsband) som gör det möjligt för dem att lära sig var stängslet finns. I vetenskapliga studier har man med varierande framgång lyckats lära djuren att associera ljudsignaler och elstötar med en gräns som inte får passeras. Förmågan att lära sig skiljer mellan olika djurslag, liksom mellan individer. Det finns fortfarande många obesvarade frågeställningar om hur djur kan anpassa sig till virtuella stängselsystemet, liksom hur de påverkas, både under inlärningsfas och bruksfas.
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| 16. |
- Berggren, Åsa, et al.
(författare)
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Early Neolithic flint mining at Södra Sallerup, Scania, Sweden
- 2016
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Ingår i: Archaeologia Polona. - Warsaw : Institute of Archaeology and Ethnology, Polish Academy of Science. - 0066-5924. ; 54, s. 167-180
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Tidskriftsartikel (refereegranskat)abstract
- The area around the villages of Kvarnby and S.dra Sallerup in south-west Scania is the only known flint-mining site in Sweden. Radiocarbon dates show that the flint was mined mainly during the earliest phase of the Early Neolithic, between c. 4000 and 3600 BC, thus coinciding with the earliest evidence of the Funnel Beaker Culture in the region. The type of flint, the size of the flint nodules, production debris in the mining area and the concentration of point-butted axes to south-west Scania all suggest that the mining was related to the extraction of flint for the production of point-butted axes. However, considering the abundance of easily available flint elsewhere in the region, it seems clear that the mining was not motivated purely by economic reasons. We suggest that the very extraction of flint from pits and shafts in the chalk was socially and symbolically significant in itself.
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| 17. |
- Berhane, Yemane, et al.
(författare)
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A rural Ethiopian population undergoing epidemiological transition over a generation : Butajira from 1987 to 2004
- 2008
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Ingår i: Scandinavian Journal of Public Health. - : SAGE Publications. - 1403-4948 .- 1651-1905. ; 36:4, s. 436-441
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Tidskriftsartikel (refereegranskat)abstract
- Aims: To describe the epidemiological development of a rural Ethiopian population from 1987 to 2004 in terms of mortality and associated sociodemographic factors. Methods: A rural population comprising 10 communities was defined in 1987 and has since been followed by means of regular household visits. After an initial census, births, deaths and migration events were recorded, together with key background factors, on an open cohort basis. Over 97,000 individuals were observed during a total of over 700,000 person years. Results: The initial population of 28,614 increased by an average of 3.64% annually to 54,426 from 1987 to 2004, and also grew older on average. Birth and mortality rates fell, but were still subject to short-term variation due to external factors. Overall mortality was 13.5 per 1000 person years. Increasing mortality in some adult age groups was consistent with increasing AIDS-related deaths, but a new local hospital in 2002 may have contributed to later falls in overall mortality. Sex, age group, time period, literacy, water source, house ownership and distance to town were all significantly associated with mortality differentials. Conclusions: This population has undergone a complex epidemiological transition during a generation. Detailed long-term surveillance of this kind is essential for describing such processes. Many factors that significantly affect mortality cannot be directly controlled by the health sector and will only improve with general development.
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| 18. |
- Byass, Peter, et al.
(författare)
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The role of demographic surveillance systems (DSS) in assessing the health of communities : an example from rural Ethiopia
- 2002
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Ingår i: Public Health. - : Elsevier BV. - 0033-3506 .- 1476-5616. ; 116:3, s. 145-150
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Tidskriftsartikel (refereegranskat)abstract
- Longitudinal demographic surveillance systems (DSSs) in selected populations can provide important information in situations where routine health information is incomplete or absent, particularly in developing countries. The Butajira Rural Health Project is one such example, initiated in rural Ethiopia in 1987. DSSs rely on regular community-based surveillance as a means of vital event registration, among a sufficient population base to draw meaningful conclusions about rates and trends in relatively rare events such as maternal death. Enquiries into specific health problems can also then use this framework to quantify particular issues or evaluate interventions. Demographic characteristics and trends for a rural Ethiopian population over a 10-y period are presented as an illustration of the DSS approach, based on 336 000 person-years observed. Overall life expectancy at birth was 50 y. Demographic parameters generally showed modest trends towards improvement over the 10-y period. The DSS approach is useful in characterising populations at the community level over a period of time, providing important information for health planning and intervention. Methodological issues underlying this approach need further exploration and development.
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| 19. |
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| 20. |
- Carstensen, Anders, et al.
(författare)
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Integrating Requirement and Solution Modelling: Approach and Experiences
- 2007
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Ingår i: The 12th Workshop on Exploring Modelling Methods for Information Systems Analysis and Design (EMMSAD).
-
Konferensbidrag (refereegranskat)abstract
- We discuss how an Enterprise Modelling approach, namely C3S3P, has been applied in an automotive supplier company. The paper concentrates on the phases of the C3S3P development process such as Concept Study, Scaffolding, Scoping, and Requirements Modelling. We have also presented the concept of task pattern which has been used in the MAPPER project for capturing, documenting and sharing best practices concerning business processes in organisation. Within this application context we have analysed our experiences concerning stakeholder participation and task pattern development.
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| 21. |
- Catasús, Bino, 1962-, et al.
(författare)
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Boken om nyckeltal
- 2008. - 2. uppl.
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Bok (populärvet., debatt m.m.)
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| 22. |
- Catasús, Bino, et al.
(författare)
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Boken om nyckeltal
- 2001
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Bok (övrigt vetenskapligt/konstnärligt)
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| 23. |
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Cultural Heritage and the Future
- 2021
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Samlingsverk (redaktörskap) (refereegranskat)abstract
- Cultural Heritage and the Future brings together an international group of scholars and experts to consider the relationship between cultural heritage and the future.Drawing on case studies from around the world, the contributing authors insist that cultural heritage and the future are intimately linked and that the development of futures thinking should be a priority for academics, students and those working in the wider professional heritage sector. Until recently, the future has never attracted substantial research and debate within heritage studies and heritage management, and this book addresses this gap by offering a balance of theoretical and empirical content that will stimulate multidisciplinary debate in the burgeoning field of critical heritage studies.Cultural Heritage and the Future questions the role of heritage in future making and will be of great relevance to academics and students working in the fields of museum and heritage studies, archaeology, anthropology, architecture, conservation studies, sociology, history and geography. Those working in the heritage professions will also find much to interest them within the pages of this book.
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| 24. |
- Dutra Leivas, Ivonne, 1973-
(författare)
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Stadsarkeologi, Förmedling och Skolan : Bortom historieämnets horisont
- 2020
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The title of this licentiate thesis is: Urban contract archaeology, public outreach and schools. Beyond the horizons of history teaching. The aim of my licentiate thesis is to investigate how educational programs for schools are implemented within the framework of contract archaeology. I study the underlying incentives that motivate public outreach within contract archaeology, who carries out the outreach and what impact educational programs have on schools. My research project also aims to explore how public outreach within contract archaeology can be organized to meet schools´ demand for knowledge and activities. With an interdisciplinary approach, taken from archaeology and educational sciences, the goal is to instigate a dialogue between the scientific community and contract archaeology, as well as between contract archaeology and schools.As a primary goal, midway into in my doctoral degree, I have chosen in this licentiate thesis to study the practices of public outreach on urban excavation sites in Sweden, specifically studying outreach practices towards schools.The research queries in the licentiate thesis are: What are the purposes and objectives with public outreach in contract archaeology?What are the preconditions for working with public outreach in contract archaeology?How are the practices of public outreach aimed at schools conducted at urban excavation sites?How do educational programs within contract archaeology address the needs and goals of school education? Based on these queries, I also discuss how contract archaeology in the future can make possible broader collaborations with schools. This serves as an introduction to how archaeo-didactics can evolve bringing together contract archaeology's goals and potential in an educational situation, with the needs and goals of school education.
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| 25. |
- Fahlander, Fredrik, et al.
(författare)
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Editorial
- 2016
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Ingår i: Current Swedish Archaeology. - : The Swedish Archaeological Society & Nordic Academic Press. - 1102-7355. ; 24, s. 8-10
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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| 26. |
- Fahlander, Fredrik, et al.
(författare)
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Editorial
- 2013
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Ingår i: Current Swedish Archaeology. - : The Swedish Archaeological Society & Nordic Academic Press. - 1102-7355 .- 2002-3901. ; 21:1, s. 8-9
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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| 27. |
- Fahlander, Fredrik, et al.
(författare)
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Editorial
- 2015
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Ingår i: Current Swedish Archaeology. - : The Swedish Archaeological Society & Nordic Academic Press. - 1102-7355 .- 2002-3901. ; 23:1, s. 8-11
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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| 28. |
- Fahlander, Fredrik, et al.
(författare)
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Editorial
- 2014
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Ingår i: Current Swedish Archaeology. - : The Swedish Archaeological Society & Nordic Academic Press. - 1102-7355 .- 2002-3901. ; 22:1, s. 8-9
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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| 29. |
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| 30. |
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| 31. |
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| 32. |
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| 33. |
- Grinell, Klas, et al.
(författare)
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Lagstadgad kunskap : Om svensk museipolitik och forskning
- 2020
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Ingår i: Nordisk Museologi. - : University of Oslo. - 1103-8152 .- 2002-0503. ; 29:2, s. 41-49
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Vad betyder museilagens betoning av kunskapsuppbyggnad för museers forskning? Hur ser relationerna mellan forskning, kunskap och museer ut i museilagens Sverige? Om detta handlardenna text. Men först en liten inringning av detsammanhang museilagen kom till i.
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| 34. |
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| 35. |
- Grinell, Klas, 1969, et al.
(författare)
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Zweedse museumwet maakt onderzoek in musea mogelijk
- 2022
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Ingår i: Faro: Tijdschrift over cultureel erfgoed. - : FARO. Vlaams steunpunt voor cultureel erfgoed. - 2030-3777. ; 15:1
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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| 36. |
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| 37. |
- Gärdenfors, Peter, et al.
(författare)
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Evolution of intentional teaching
- 2021
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Ingår i: The Oxford Handbook of Human Symbolic Evolution. - Oxford : Oxford University Press.
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Bokkapitel (refereegranskat)abstract
- Only among humans is teaching intentional, socially structured, and symbolically mediated. In this chapter, evidence regarding the evolution of the mindreading and communicative capacities underlying intentional teaching is reviewed. Play, rehearsal, and apprenticeship are discussed as central to the analyses of teaching. We present a series of levels of teaching. First of all, we separate non-intentional from intentional teaching. For non-intentional teaching, we discuss facilitation and approval/disapproval and analyze examples from non-human species. We then distinguish between six levels of intentional teaching: (1) intentional approval/disapproval, (2) drawing attention, (3) demonstrating, (4) communicating concepts, (5) explaining concept relations, and (6) narrating. We hypothesize that level after level has been added during the evolution of teaching. We analyze communicative requirements for the levels, concluding that displaced communication is required for level 4 and symbolic language only for levels 5 to 6. We focus on the role of demonstration and pantomime and argue that pantomime has been instrumental in the evolution of language. We present archaeological evidence for when the different levels of teaching emerge. We argue that learning Oldowan technology requires teaching by demonstration, and that learning Acheulean hand-axe technology requires communicating concepts. It follows that several levels of intentional teaching predate homo sapiens.
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| 38. |
- Gärdenfors, Peter, et al.
(författare)
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Evolutionary mechanisms of teaching
- 2015
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Ingår i: Behavioral and Brain Sciences. - : Cambridge University Press. - 0140-525X .- 1469-1825. ; 38, s. 25-26
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Tidskriftsartikel (refereegranskat)abstract
- We argue that Kline’s analysis does not account for the evolutionary mechanisms that can explain the uniqueness of human teaching. We suggest that data should be complemented by an analysis of archaeological material with respect to what forms of teaching are required for the transmission of technologies over generations.
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| 39. |
- Gärdenfors, Peter, et al.
(författare)
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The Archaeology of Teaching and the Evolution of Homo docens
- 2017
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Ingår i: Current Anthropology. - : University of Chicago Press. - 0011-3204 .- 1537-5382. ; 58:2, s. 188-201
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Tidskriftsartikel (refereegranskat)abstract
- Teaching is present in all human societies, while within other species it is very limited. Something happened during the evolution of Homo sapiens that also made us Homo docens—the teaching animal. Based on discussions of animal and hominin learning, we analyze the evolution of intentional teaching by a series of levels that require increasing capacities of mind reading and communication on the part of the teacher and the learner. The levels of teaching are (1) intentional evaluative feedback, (2) drawing attention, (3) demonstrating, (4) communicating concepts, and (5) explaining relations between concepts. We suggest that level after level has been added during the evolution of teaching. We demonstrate how different technologies depend on increasing sophistication in the levels of cognition and communication required for teaching them. As regards the archaeological evidence for the different levels, we argue that stable transmission of the Oldowan technology requires at least teaching by demonstration and that learning the late Acheulean hand-axe technology requires at least communicating concepts. We conclude that H. docens preceded H. sapiens.
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| 40. |
- Gärdenfors, Peter, et al.
(författare)
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Where does the elephant come from? : The evolution of causal cognition is the key
- 2020
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Ingår i: Behavioral and Brain Sciences. - : Cambridge University Press. - 0140-525X .- 1469-1825. ; 43, s. 25-26
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Osiurak and Reynaud do not explain the evolutionary emergence and development of the elephant in the room, that is, technical cognition. We first argue that there is a tight correlation between the evolution of cumulative technological culture (CTC) and the evolution of reasoning about abstract forces. Second, intentional teaching plays a greater role in CTC evolution than acknowledged in the target article.
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| 41. |
- Hallingbäck, Henrik, et al.
(författare)
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Optimal timing of early genetic selection for sawn timber traits in Picea abies
- 2018
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Ingår i: European Journal of Forest Research. - : Springer. - 1612-4669 .- 1612-4677. ; 137:4, s. 553-564
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Tidskriftsartikel (refereegranskat)abstract
- In breeding Norway spruce, selection for improved growth and survival is performed at age 10-15 years in order to optimize genetic gain per year. We investigated whether a selection based on wood traits such as density and grain angle, measured under bark in the field at the same age would be informative enough with respect to structural quality traits of sawn boards. To achieve this objective, a sawing study was conducted on the butt logs of 401 trees from a 34-year-old Norway spruce progeny trial situated in southern Sweden. Stem discs were excised from the top of the logs and radial profile data of grain angle, and wood density was recorded for specific annual rings. The sawn and dried boards were assessed for structural traits such as twist, board density, bending stiffness (static modulus of elasticity, sMoE) and bending strength (modulus of rupture, MoR). Additive genetic correlations (r (a)) between single annual ring density measurements and board density, sMoE and MoR were consistently strong (r (a)> 0.7) for annual rings 5-13. Genetic correlations of similar magnitude between grain angle and board twist were estimated for all investigated annual rings (from 2 to around 26 under bark). Consequently, it was found that indirect selection for wood density and grain angle at the tree age 10-16 years would result in more genetic gain per year than selection at later ages. This makes it feasible to perform simultaneous selection of progeny in the field for both growth and wood traits at similar ages.
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| 42. |
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| 43. |
-
Heritage Futures : Comparative Approaches to Natural and Cultural Heritage Practices
- 2020
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Samlingsverk (redaktörskap) (refereegranskat)abstract
- Preservation of natural and cultural heritage is often said to be something that is done for the future, or on behalf of future generations, but the precise relationship of such practices to the future is rarely reflected upon. Heritage Futures draws on research undertaken over four years by an interdisciplinary, international team of 16 researchers and more than 25 partner organisations to explore the role of heritage and heritage-like practices in building future worlds.Engaging broad themes such as diversity, transformation, profusion and uncertainty, Heritage Futures aims to understand how a range of conservation and preservation practices across a number of countries assemble and resource different kinds of futures, and the possibilities that emerge from such collaborative research for alternative approaches to heritage in the Anthropocene. Case studies include the cryopreservation of endangered DNA in frozen zoos, nuclear waste management, seed biobanking, landscape rewilding, social history collecting, space messaging, endangered language documentation, built and natural heritage management, domestic keeping and discarding practices, and world heritage site management.
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| 44. |
- Herlin, Anders Henrik, et al.
(författare)
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Animal welfare implications of digital tools for monitoring and management of cattle and sheep on pasture
- 2021
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Ingår i: Animals. - : MDPI AG. - 2076-2615. ; 11:3
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Tidskriftsartikel (refereegranskat)abstract
- The opportunities for natural animal behaviours in pastures imply animal welfare benefits. Nevertheless, monitoring the animals can be challenging. The use of sensors, cameras, positioning equipment and unmanned aerial vehicles in large pastures has the potential to improve animal welfare surveillance. Directly or indirectly, sensors measure environmental factors together with the behaviour and physiological state of the animal, and deviations can trigger alarms for, e.g., disease, heat stress and imminent calving. Electronic positioning includes Radio Frequency Identification (RFID) for the recording of animals at fixed points. Positioning units (GPS) mounted on collars can determine animal movements over large areas, determine their habitat and, somewhat, health and welfare. In combination with other sensors, such units can give information that helps to evaluate the welfare of free-ranging animals. Drones equipped with cameras can also locate and count the animals, as well as herd them. Digitally defined virtual fences can keep animals within a predefined area without the use of physical barriers, relying on acoustic signals and weak electric shocks. Due to individual variations in learning ability, some individuals may be exposed to numerous electric shocks, which might compromise their welfare. More research and development are required, especially regarding the use of drones and virtual fences. © 2021 by the authors.
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| 45. |
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| 46. |
- Holtorf, Cornelius, 1968-, et al.
(författare)
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Archaeology and the Future
- 2018. - Living edition
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Ingår i: Encyclopedia of Global Archaeology. - Cham : Springer. - 9783319517261
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Bokkapitel (refereegranskat)abstract
- The future has seldom been an object of archaeological study even though there are some very profound and deep-reaching links between past, present, and future. At the same time, archaeologists work to preserve places, environments, and associated values and knowledge for future generations. But although it is not far-fetched to claim that the future will differ from what we are used to in the present, in managing archaeological heritage, most assumptions about the future do not build on an understanding of how the future will be different from today. We argue in this paper that archaeologists should not only promote historical consciousness but also future consciousness.
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| 47. |
- Holtorf, Cornelius, 1968-, et al.
(författare)
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Archaeology and the future : Managing nuclear waste as a living heritage
- 2015
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Ingår i: Radioactive Waste Management and Constructing Memory for Future Generations. - : OECD Publishing. ; , s. 97-101
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Archaeology is the study of the past and its remains in the present. It is relevant to the long-term preservation of records, knowledge and memory, e.g. regarding final repositories of nuclear waste, in two ways. Firstly, future archaeology may promise the recovery of lost information, knowledge and meaning of remains of the past. Secondly, present-day archaeology can offer lessons about how future societies will make sense of remains of the past.Archaeology is always situated in a larger social and cultural context and the information, knowledge and meaning it generates is necessarily of its own present. Archaeological knowledge reflects contemporary perceptions of past and future; these perceptions change over time. Indeed, we cannot assume that in the future there will be any archaeology at all. We think, therefore, that future societies will want, and need, to make their own decisions about sites associated with nuclear waste, based on their own perceptions of past and future. To facilitate this process in the long term we need to engage each present, keeping safe options open.In this text we elaborate on these issues from our perspective as archaeologists.
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| 48. |
- Holtorf, Cornelius, 1968-, et al.
(författare)
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Archaeology and the Future
- 2024. - 2 ed.
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Ingår i: Encyclopedia of Archaeology. - London : Academic Press. - 9780323907996 - 9780323918565 ; , s. 652-659
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Bokkapitel (refereegranskat)abstract
- The future is an important new topic for archaeology. Archaeologists do not only study past futures but are also concerned with future pasts and in particular with the impact of their work on future societies. Drawing on the notion of “heritage futures”, archaeological heritage is claimed to contribute to sustainable development and address challenges posed by climate change, human conflicts, and others.
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| 49. |
- Holtorf, Cornelius, 1968-, et al.
(författare)
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Archaeology and the Future
- 2020. - 2 ed.
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Ingår i: Encyclopedia of Global Archaeology. - Cham : Springer. - 9783030300166 - 9783030300180 ; , s. 646-653
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 50. |
- Holtorf, Cornelius, 1968-, et al.
(författare)
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Communicating with future generations : what are the benefits of preserving for future generations? Nuclear power and beyond
- 2014
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Ingår i: The European Journal of Post-Classical Archaeologies. - 2039-7895. ; 4, s. 315-330
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Tidskriftsartikel (refereegranskat)abstract
- In 1977, the first fast breeder nuclear reactor in the world to provide electricity to a national grid was shut down for the last time. The Dounreay Dome on the North coast of Scotland, near Thurso, Caithness, was completed in 1958 and its silhouette later became an emblem of the Atomic Age. As the decommission of the entire site proceeds, incorporating even other defunct nuclear reactors and associated facilities, the question arose whether the Dome can and should be preserved as cultural heritage for the benefit of future generations. Using the example of the legacy of the nuclear power station at Dounreay, this paper discusses the question what it means to preserve something for the benefit of future generations.
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