| 1. |
- Abramovich, Shoshana, et al.
(författare)
-
General inequalities via isotonic subadditive functionals
- 2007
-
Ingår i: Mathematical Inequalities & Applications. - : Element d.o.o.. - 1331-4343 .- 1848-9966. ; 10:1, s. 15-28
-
Tidskriftsartikel (refereegranskat)abstract
- In this manuscript a number of general inequalities for isotonic subadditive functionals on a set of positive mappings are proved and applied. In particular, it is pointed out that these inequalities both unify and generalize some general forms of the Holder, Popoviciu, Minkowski, Bellman and Power mean inequalities. Also some refinements of some of these results are proved.
|
|
| 2. |
|
|
| 3. |
|
|
| 4. |
- Aidanpää, Jan-Olov, et al.
(författare)
-
Developments in rotor dynamical modeling of hydropower units
- 2009
-
Ingår i: Proceedings of the IUTAM Symposium on Emerging Trends in Rotor Dynamics. - Dordrecht : Encyclopedia of Global Archaeology/Springer Verlag. - 9789400700192
-
Konferensbidrag (refereegranskat)
|
|
| 5. |
- Allen, Rodney, et al.
(författare)
-
Global comparisons of volcanic-associated massive sulphide districts
- 2002
-
Ingår i: The timing and location of major ore deposits in an evolving Orogen. - London : Geological Society of London. - 186239122X ; , s. 13-37
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- Although volcanic-associated massive sulphide (VMS) deposits have been studied extensively, the geodynamic processes that control their genesis, location and timing remain poorly understood. Comparisons among major VMS districts, based on the same criteria, have been commenced in order to ascertain which are the key geological events that result in high-value deposits. The initial phase of this global project elicited information in a common format and brought together research teams to assess the critical factors and identify questions requiring further research. Some general conclusions have emerged. (1) All major VMS districts relate to major crustal extension resulting in graben subsidence, local or widespread deep marine conditions, and injection of mantle-derived mafic magma into the crust, commonly near convergent plate margins in a general back-arc setting. (2) Most of the world-class VMS districts have significant volumes of felsic volcanic rocks and are attributed to extension associated with evolved island arcs, island arcs with continental basement, continental margins, or thickened oceanic crust. (3) They occur in a part of the extensional province where peak extension was dramatic but short-lived (failed rifts). In almost all VMS districts, the time span for development of the major ore deposits is less than a few million years, regardless of the time span of the enclosing volcanic succession. (4) All of the major VMS districts show a coincidence of felsic and mafic volcanic rocks in the stratigraphic intervals that host the major ore deposits. However, it is not possible to generalize that specific magma compositions or affinities are preferentially related to major VMS deposits world-wide. (5) The main VMS ores are concentrated near the top of the major syn-rift felsic volcanic unit. They are commonly followed by a significant change in the pattern, composition and intensity of volcanism and sedimentation. (6) Most major VMS deposits are associated with proximal (near-vent) rhyolitic facies associations. In each district, deposits are often preferentially associated with a late stage in the evolution of a particular style of rhyolite volcano. (7) The chemistry of the footwall rocks appears to be the biggest control on the mineralogy of the ore deposits, although there may be some contribution from magmatic fluids. (8) Exhalites mark the ore horizon in some districts, but there is uncertainty about how to distinguish exhalites related to VMS from other exhalites and altered, bedded, fine grained tuffaceous rocks. (9) Most VMS districts have suffered fold-thrust belt type deformation, because they formed in short-lived extensional basins near plate margins, which become inverted and deformed during inevitable basin closure. (10) The specific timing and volcanic setting of many VMS deposits, suggest that either the felsic magmatic-hydrothermal cycle creates and focuses an important part of the ore solution, or that specific types of volcanism control when and where a metal-bearing geothermal solution can be focused and expelled to the sea floor, or both. This and other questions remain to be addressed in the next phase of the project. This will include in-depth accounts of VMS deposits and their regional setting and will focus on an integrated multi-disciplinary approach to determine how mineralisation, volcanic evolution and extensional tectonic evolution are interrelated in a number of world-class VMS districts.
|
|
| 6. |
- Almqvist, Andreas, et al.
(författare)
-
Homogenization of the unstationary incompressible Reynolds equation
- 2007
-
Ingår i: Tribology International. - : Elsevier BV. - 0301-679X .- 1879-2464. ; 40:9, s. 1344-1350
-
Tidskriftsartikel (refereegranskat)abstract
- This paper is devoted to the effects of surface roughness during hydrodynamic lubrication. In the numerical analysis a very fine mesh is needed to resolve the surface roughness, suggesting some type of averaging. A rigorous way to do this is to use the general theory of homogenization. In most works about the influence of surface roughness, it is assumed that only the stationary surface is rough. This means that the governing Reynolds type equation does not involve time. However, recently, homogenization was successfully applied to analyze a situation where both surfaces are rough and the lubricant is assumed to have constant bulk modulus. In this paper we will consider a case where both surfaces are assumed to be rough, but the lubricant is incompressible. It is also clearly demonstrated, in this case that homogenization is an efficient approach. Moreover, several numerical results are presented and compared with those corresponding to where a constant bulk modulus is assumed to govern the lubricant compressibility. In particular, the result shows a significant difference in the asymptotic behavior between the incompressible case and that with constant bulk modulus.
|
|
| 7. |
- Anclair, Malin, et al.
(författare)
-
Parental fears following their child's brain tumor diagnosis and treatment.
- 2009
-
Ingår i: Journal of pediatric oncology nursing : official journal of the Association of Pediatric Oncology Nurses. - : SAGE Publications. - 1043-4542 .- 1532-8457. ; 26:2, s. 68-74
-
Tidskriftsartikel (refereegranskat)abstract
- The objective of this study is to portray the illness-related threats experienced by parents of children after the diagnosis of central nervous system (CNS) tumor. Parents were asked to rate the extent to which they experienced a set of specific fears related to their child's brain tumor and its treatment. Outcomes for parents of CNS tumor patients (n = 82) were compared with those of reference parents of patients treated for acute lymphoblastic leukemia (n = 208). The fears about an illness recurrence and the late effects of treatment were most prominent among parents of CNS tumor patients. For 7 out of 11 kinds of fear, parents of CNS tumor patients expressed a stronger fear than the reference group. More than a quarter of the parents of children treated for CNS tumors feared a complete decline of the child. Parents of CNS tumor patients experience relatively heightened cancer related fears in several domains. The fear of devastating consequences felt by one fourth of parents signals the need of individualized psychological support and information at diagnosis and follow-up to facilitate parental coping with the posttreatment situation.
|
|
| 8. |
- Andersson, Ingalena, et al.
(författare)
-
Meal pattern and risk factor evaluation in one-year completers of a weight reduction program for obese men : The 'Gustaf' study
- 2000
-
Ingår i: Journal of Internal Medicine. - : Wiley. - 0954-6820 .- 1365-2796. ; 247, s. 30-
-
Tidskriftsartikel (refereegranskat)abstract
- Objectives: To evaluate changes in meal patterns and in obesity related risk factors after 1 year of treatment in obese men. Design: Data from two 24-h dietary recalls, performed at base-line and after 1 year of treatment, were related to changes in medical risk factors. Setting: Academic obesity unit. Subjects: Sixty-three men, aged 44 (eight) years (mean [SD]) and Base- line Body Mass Index (BMI) 37.4 (4.6) kg m-2, who had completed 1 year of treatment. The men were subdivided by tertiles according to weight change: tertile I (n = 21), mean +0.3 kg, tertile II (n = 21), mean -5.8 kg and tertile III (n = 21), mean -14.2 kg. Main outcome measures: Weight loss, changes in meal patterns and in obesity related medical risk factors. Results: The reported mean energy intake decreased after treatment in tertiles II and III by 700 (1300) kcal (P < 0.05) and 700 (900) kcal (P = 0.001), respectively. In tertile III the energy-% from fat decreased (P < 0.05) with a reciprocal increase in energy-% from protein (P < 0.05). The frequency of snacks of a low nutritional quality decreased (P < 0.01) in tertile III together with an increase in energy-% from 'hot meals of good quality' (P < 0.05). Obesity related risk factors (anthropometry, blood pressure, serum lipid concentrations, blood glucose and plasma insulin) improved in a beneficial way only in tertile III. Conclusions: The weight loss in the successful tertile III men was to a great extent explained by fewer low quality snacks but more energy from high quality meals. These changes reflected the behaviour modification strategy recommended.
|
|
| 9. |
- Antal, Ildiko, et al.
(författare)
-
Kartbladen 23J Norsjö
- 2000
-
Ingår i: Regional berggrundsgeologisk undersökning. - Uppsala : Sveriges Geologiska Undersökning. - 9171586512 - 9171586334 ; , s. 38-47
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)
|
|
| 10. |
- Baraër, Christophe, et al.
(författare)
-
ExPLoIT : exploiting past location information and transitivity for positioning in mobile sensor networks
- 2007
-
Ingår i: 2nd International Conference on Communication Systems Software and Middleware, 2007. - Piscataway, NJ : IEEE Communications Society. - 1424406145
-
Konferensbidrag (refereegranskat)abstract
- We present a novel distributed range-free technique called ExPLoIT for estimating geographical location of sensor nodes in mobile sensor networks. ExPLoIT is the first positioning technique that exploits location information at regular nodes in addition to using seeds. The key idea is the notion of confidence that a node has in its location estimate which can be used by other nodes for localization. Using Monte Carlo integration, a node estimates its current location and confidence based on its past location and the location information it receives from its neighbors. Node mobility is exploited to transitively localize the network. Our extensive simulation study shows that our proposal outperforms three other state-of-the-art range-free localization techniques under a wide range of conditions. The strength of ExPLoIT is that it is robust to irregular radio propagation, arbitrary seed and node density, and stochastic seed and node mobility; no special hardware is necessary at sensor nodes.
|
|
