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Sökning: WFRF:(Lekander M) > Kungliga Tekniska Högskolan

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2.
  • Janszky, I, et al. (författare)
  • Inflammatory markers and heart rate variability in women with coronary heart disease
  • 2004
  • Ingår i: Journal of Internal Medicine. - : Wiley. - 0954-6820 .- 1365-2796. ; 256:5, s. 421-428
  • Tidskriftsartikel (refereegranskat)abstract
    • Purpose. Both heart rate variability (HRV) and inflammatory markers are carrying prognostic information in coronary heart disease (CHD), however, we know of no studies examining their relation in CHD. The aim of this study, therefore, was,to assess the association between HRV and inflammatory activity, as reflected by the levels of interleukin-6 (IL-6), IL-1 receptor antagonist (IL-1ra) and C-reactive protein (CRP). Subjects and methods. Consecutive women patients who survived hospitalization for acute myocardial infarction, and/or underwent a percutaneous transluminal coronary angioplasty or a coronary artery bypass grafting were included and evaluated in a stable condition 1 year after the index events. An ambulatory 24-h ECG was recorded during normal activities. SDNN index (mean of the standard deviations of all normal to normal intervals for all 5-min segments of the entire recording) and the following frequency domain parameters were assessed: total power, high frequency (HF) power, low frequency (LF) power and very low frequency (VLF) power. Levels of high-sensitivity CRP were measured by nephelometry, IL-6 and IL-1ra concentrations were determined by enzyme immunoassay. Results. Levels of IL-6 showed an inverse relation with HRV measures even after controlling for potential confounding factors. The P-values were 0.02, 0.04, 0.01, 0.03, 0.18 for the multivariate association with SDDN index, total power, VLF power, LF power and HF power respectively. In contrast, the inverse relationship between HRV measures and CRP or IL-1ra levels were weak and nonsignificant. Correlation coefficients for the relationship between IL-6 and HRV measures were both uni- and multivariately higher than for the relationship between HRV measures and any other factors evaluated in this study. Conclusion. Concentration of IL-6 showed a negative, independent association with HRV in women with CHD. Thus, increased inflammatory activity, as reflected by IL-6 levels, may represent a new auxiliary mechanism linking decreased HRV to poor prognosis in CHD.
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3.
  • Hoesli, M., et al. (författare)
  • Real Estate in the Institutional Portfolio : A Comparison of Suggested and Actual Weights
  • 2003
  • Ingår i: The Journal of Alternative Investments. - 1520-3255 .- 2168-8435. ; 6:3, s. 53-59
  • Tidskriftsartikel (refereegranskat)abstract
    • The main objective of this study is to provide international evidence on the discrepancy between suggested and actual allocations to real estate in institutional portfolios, and also to discuss possible reasons for the discrepancy. We use data for the U.S., U.K., Sweden, and Switzerland to investigate the benefits of including real estate assets? both domestic and international? in institutional portfolios. The optimal allocation to real estate is found to be 15% to 20%, and is remarkably stable across countries. The suggested allocations to real estate in institutional portfolios are then compared with the actual institutional holdings in these four countries. The latter are found to be much less than the former, and some possible explanations for the discrepancy are given. The study also reports a substantial home bias in institutional real estate portfolios.
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4.
  • Lekander, Jon R. G. M. (författare)
  • How do institutional pension managers consider real estate : A perspective from Sweden and Finland
  • 2017
  • Ingår i: Journal of Property Investment & Finance. - : Emerald Group Publishing Limited. - 1463-578X .- 1470-2002. ; 35:1, s. 26-43
  • Tidskriftsartikel (refereegranskat)abstract
    • Purpose: The asset allocation decision for a pension portfolio needs to consider several, sometimes conflicting, aspects. Most pension managers use models and processes that are developed for the traditional asset classes for analyzing this problem. The purpose of this paper is to investigate how real estate is included in this process, for what purpose and how the real estate portfolio is constructed. Design/methodology/approach: Seven individuals responsible for the asset allocation process were interviewed, and their responses were analyzed with regards to organizational options and their real estate strategy. Findings: It was found that real estate is held for three different purposes, risk diversification, inflation hedging/liability matching and return enhancement and that the allocation has increased over time. The allocation strategy has evolved at least in part in conjuncture with the organizational structure set in place to overcome real estate market frictions. Research limitations/implications: The interviews were geographically limited to pension funds domiciled in Sweden and Finland. Practical implications: It is concluded that the organizational capabilities of the pension fund of handling real estate is an important consideration for the ensuing real estate portfolio. Originality/value: The originality of this paper lies in that it is based on interviews with individuals who are responsible for the asset allocation decision at large pension funds. The findings of the paper identify areas of interest for future research.
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5.
  • Lekander, Jon R. G. M. (författare)
  • Real estate portfolio construction for a multi-asset portfolio
  • 2015
  • Ingår i: Journal of Property Investment & Finance. - : Emerald Group Publishing Limited. - 1463-578X .- 1470-2002. ; 33:6, s. 548-573
  • Tidskriftsartikel (refereegranskat)abstract
    • Purpose – The purpose of this paper is to explore how tenant end demand dependence and investment market segmentation, as estimated through sector type, impacts real estate portfolio strategy in the context of the multi-asset portfolio. Design/methodology/approach – The analysis is performed for six investor domeciles, for domestic and international investments over several cycles. The analysis is performed in a mean variance framework. Findings – The findings are consistent with the hypothesis that an investor benefits from investing in real estate assets where end demand is dependent on local factors rather than global factors. Practical implications – The efficiency of the overall multi-asset portfolio benefits from a deeper understanding of how the real estate portfolio is constructed. Locally dependent real estate, i.e. real estate that is dependent on local economic factors, tends to better support the overall portfolio than do real estate that is dependent upon global factors. Originality/value – The paper contributes to the broader knowledge through extending earlier studies using similar methodology by extending the data series to cover the impact of the latest global financial crises, as well through extending the knowledge how the real estate portfolio should be constructed to better support the overall objectives of the multi-asset portfolio.
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