| 1. |
- Edin, Per-Anders, et al.
(författare)
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The Swedish youth labor market in boom and depression
- 1998
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- This paper is concerned with the labor market experience of Swedish youths during the 1980s and the 1990s. The first objective is to portray early economic attainment among young Swedes. The second objective of the paper is to examine the impact of labor market programs on youth employment. We find that the slump in the 1990s has been associated with dramatic increases in youth unemployment and youth participation in active labor market programs. The impact on unemployment rates by age and education has been roughly proportional, however. The evolution of employment and unemployment does not offer much ground for the popular hypothesis that the recent rise in unemployment is driven by large and pervasive shifts in the demand for labor by skill attributable to technological innovation. The employment crisis has been met by an unprecedented increase in active labor market programs, in large part targeted at unemployed youths. There is a risk that these programs may crowd out regular youth employment, a hypothesis that is supported in our empirical investigation of regular youth employment in Swedish municipalities.
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| 2. |
- Edin, Per-Anders, et al.
(författare)
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The Swedish youth labor market in boom and depression
- 1999
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Ingår i: Youth Employment and Joblessness in Advanced Countries. - : University of Chicago Press.
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Bokkapitel (refereegranskat)abstract
- This paper is concerned with the labor market experience of Swedish youths during the 1980s and the 1990s. The first objective is to portray early economic attainment among young Swedes. The second objective of the paper is to examine the impact of labor
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| 3. |
- Forslund, Bertil
(författare)
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On the preparation and properties of mixed-valence alkali vanadium oxides
- 1984
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The phase relations in the systems A2O-V2O5-V2O3 (A = alkali metal) are very complex. The existence of a number of stoichiometric and non-stoichiometric phases complicates phase analysis and preparative work.Preparation methods are described for fairly large single crystals of mixed-valence cesium and rubidium vanadium oxides, grown from melts in a relatively simple apparatus. Oxygen activity control was found to be crucial and could be realized conveniently via the gas phase surrounding the sample.The Cs2O- and Rb2O- V2O5-V2O3 systems were investigated at liquidus temperatures and the relevant oxygen partial pressures and temperatures to initiate growth of the various phases were established. Different thermo-analytical techniques, such as differential thermal analysis (DTA), thermo-gravimetry (TG) and thermo-microscopy (TM) were used.Electric and magnetic properties of single crystals of the compounds are presented and discussed with reference to the crystal structures. An uncritical compilation of reported phases occurring in the systems A2O-V2O5-V2O3 (A = Li-Cs) is also presented, with a brief literature survey of preparative methods.
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| 4. |
- Holmlund, Bertil, et al.
(författare)
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Arbetslöshet och arbetsmarknadspolitik
- 2011
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Ingår i: <em>Tillämpad makroekonomi</em> (Applied Macroeconomics). - : SNS förlag.
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Bokkapitel (populärvet., debatt m.m.)
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| 5. |
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| 6. |
- Holmlund, Bertil, et al.
(författare)
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Arbetslöshet och arbetsmarknadspolitik
- 2007
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Ingår i: Tillämpad makroekonomi (Applied Macroeconomics).. - : SNS Förlag.
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Bokkapitel (populärvet., debatt m.m.)
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| 7. |
- Holmlund, Bertil, et al.
(författare)
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Arbetsmarknad och arbetsmarknadspolitik
- 2008. - 3
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Ingår i: Tillämpad makroekonomi. - Stockholm : SNS Förlag. - 9789185695386 ; , s. 120-152
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Bokkapitel (populärvet., debatt m.m.)
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| 8. |
- Sharafat, Ali, et al.
(författare)
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Formation and properties of nitrogen-rich strontium silicon oxynitride glasses
- 2009
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Ingår i: Journal of Materials Science. - : Springer Science and Business Media LLC. - 0022-2461 .- 1573-4803. ; 44:2, s. 664-670
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Tidskriftsartikel (refereegranskat)abstract
- Glass formation in the system Sr–Si–O–N was investigated and properties of obtained glasses evaluated. The glass-forming region was determined for glasses prepared by melting mixtures of Sr metal, SiO2 and Si3N4 powders in Nb crucibles at 1600–1750 °C in nitrogen atmosphere using a radio frequency furnace. The glasses were found to be homogenous, translucent gray to opaque black, and to contain high contents of N (up to 45 e/o) and Sr (up to 36 e/o). The glass transition temperature (790–973 °C), density (2.99–4.07 g/cm3), microhardness (8.10–10.50 GPa), and refractive index (1.65–1.93) are strongly correlated with the amounts of Sr and N. The properties are compared with findings in other oxynitride silicate glass systems.
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| 9. |
- Zubkov, V. G., et al.
(författare)
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Structural, vibrational, electronic, and luminescence properties of the cyclotetravanadates A(2)M(VO3)(4) (A=Na,Ag; M=Ca,Sr)
- 2008
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Ingår i: Physical Review B. Condensed Matter and Materials Physics. - 1098-0121 .- 1550-235X. ; 77, s. 174113-
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Tidskriftsartikel (refereegranskat)abstract
- The physical properties of the family of cyclotetravanadates A(2)M(VO3)(4), where A=Na,Ag and M=Ca,Sr, have been studied by means of x-ray powder diffraction, neutron diffraction, electron diffraction, infrared, Raman, NMR, photoexcitation and pulse cathode beam excitation, and x-ray photoelectron spectroscopies, and band structure calculations. The differences between the structural, vibrational, luminescence, and electronic properties of the alkali metal-containing [Na2Ca(VO3)(4) and Na2Sr(VO3)(4)] and the d metal-containing cyclotetravanadates [Ag2Ca(VO3)(4) and Ag2Sr(VO3)(4)] are analyzed. Na2Ca(VO3)(4), Ag2Ca(VO3)(4), Na2Sr(VO3)(4), and Ag2Sr(VO3)(4) have tetragonal structures, P4/nbm, with a=10.438 49(6), 10.445 24(5), 10.634 49(4), and 10.625 74(6), and c=4.938 73(5), 4.968 45(5), 4.962 05(4), and 4.979 30(4) angstrom, respectively. The main structural feature of A(2)M(VO3)(4) is the tetracyclic [V4O12] units. The hybridized O 2p-V 3d states of the tetracyclic [V4O12] units have a dominant influence on the electronic structure of these compounds. The compounds are semiconducting with a local density approximation band gap increasing, from 1.85 eV for Ag2Ca(VO3)(4) to 3.02 eV for Na2Ca(VO3)(4). The prospects of these compounds as advanced materials for detectors of photon and corpuscular radiation as well as for color correction of light emission sources such as lamp and light emitting diode sources are discussed.
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| 10. |
- Zubkov, VG, et al.
(författare)
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Synthesis, crystal structure and luminescent properties of pyrovanadates A(2)CaV(2)O(7) (A = Rb, Cs)
- 2009
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Ingår i: Solid State Sciences. - : Elsevier BV. - 1293-2558 .- 1873-3085. ; 11:3, s. 726-732
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Tidskriftsartikel (refereegranskat)abstract
- The novel vanadium oxides Rb2CaV2O7 and Cs2CaV2O7 have been prepared by solid-state reaction and their crystal structures determined and refined using X-ray, neutron powder and electron diffraction data. Rb2CaV2O7 and Cs2CaV2O7 are isostructural, crystallizing in space group P21/n with unit cell parameters: a = 13.8780(1), b = 5.96394(5), c = 10.3376(1) Å, ? = 104.960(1)º and a = 14.0713(2), b = 6.0934(1), c = 10.5944(1) Å, ? = 104.608(1)º, respectively. Their crystal structures can be described as a framework of CaO6 octahedra and V2O7 pyrogroups with alkaline metals found in the tunnels formed. Photoluminescence (PL) and PL excitation spectra of the concerned pyrovanadates have been studied in the vacuum ultraviolet (VUV) to visible light (VIS) range as well as their pulse cathode luminescence (PCL) spectra and the kinetic parameters of PCL. In the PL and the PCL spectra of both pyrovanadates recorded at T = 300 K a broad band with maxima at 2.38, 2.2 eV and a shoulder (band) at 2.08 eV have been observed. At T = 10 K the band at 2.08 eV becomes the main band in the spectra. Two types of luminescence centers for each pyrovanadates, with very similar excitation bands at 3.75, 4.84, 6.2, 7.3 and 9.1 eV, have been found. The nature of the luminescence centers connected with the band 2.08 eV (center I) and the bands 2.2 and 2.38 eV (center II) is discussed
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