139 research outputs found

    Identity and Interests: Understanding the Meltdown in Israeli-Turkish Relations 2002-2012

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    The recent deterioration of the strong bilateral alliance between Israel and Turkey has significant affects on the balance of power within the Middle East. As such, it is important that scholars determine why this meltdown has occurred. This thesis sought to explain the deterioration of relations between Israel and Turkey and overcome gaps in the existing literature concerned with this meltdown of bilateral relations by taking a fresh look into the role of identity and the interests it creates. Hence, the framework of Wendtian constructivism was applied in order to examine the social origins and impacts of identity and interests on alliance formation and deterioration. In this thesis, I suggested that Israel’s identity has changed slowly over the past decade and as such, should be perceived as ‘relatively’ stable. Conversely, however, Turkey’s national identity changed sharply, drifting away from the Ataturk agenda of Westernisation and secularism towards an Islamic heritage. In order to strengthen my argument that this shift in Turkish identity has primarily accounted for the deterioration of its relations with Israel, I analysed Turkish attitudes towards foreign policies other than its bilateral relationship with Israel, as well as its newly defined interests. Thus, whereas Israel’s relatively stable national identity and domestic policies were matched by its relatively stable foreign interests over the past decade, deep changes to Turkey’s national identity redirected its domestic policies under Recep Tayyip Erdoğan’s government. Consequently, Turkey has employed a number of political tensions and events as pretexts in order to unilaterally disengage from its relations with Israel so that it can further new foreign policies and interests. Identity matters, and for better or worse, identity changes precede foreign policy change, a lesson we must not forget

    A dual point description of mesoscopic superconductors

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    We present an analysis of the magnetic response of a mesoscopic superconductor, i.e. a system of sizes comparable to the coherence length and to the London penetration depth. Our approach is based on special properties of the two dimensional Ginzburg-Landau equations, satisfied at the dual point (κ=12).(\kappa = \frac{1}{\sqrt{2}}). Closed expressions for the free energy and the magnetization of the superconductor are derived. A perturbative analysis in the vicinity of the dual point allows us to take into account vortex interactions, using a new scaling result for the free energy. In order to characterize the vortex/current interactions, we study vortex configurations that are out of thermodynamical equilibrium. Our predictions agree with the results of recent experiments performed on mesoscopic aluminium disks.Comment: revtex, 20 pages, 9 figure

    Vortex states in superconducting rings

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    The superconducting state of a thin superconducting disk with a hole is studied within the non-linear Ginzburg-Landau theory in which the demagnetization effect is accurately taken into account. We find that the flux through the hole is not quantized, the superconducting state is stabilized with increasing size of the hole for fixed radius of the disk, and a transition to a multi-vortex state is found if the disk is sufficiently large. Breaking the circular summetry through a non central location of the hole in the disk enhances the multi-vortex state.Comment: 11 pages, 23 figures (postscript). To appear in Physical Review B, Vol. 61 (2000

    Differences in housing transitions and changes in health and self-determination between formerly homeless individuals

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    Background: To reduce homelessness, it is important to gain a better understanding of the differences between homeless people who remain in institutions and those who gain and can sustain independent housing. This longitudinal study explores differences in housing transitions and differences in changes in health and selfdetermination between formerly homeless people still living in institutions 2.5 years later and those now living in independent housing in the Netherlands. Methods: This study mapped the housing transitions of 263 participants from when they entered the social relief system (SRS) to 2.5 years later when they were in independent housing or institutions. These individuals were compared at the 2.5-year mark in terms of gender, age and retrospectively in terms of duration of homelessness. They were also compared with regard to changes in psychological distress, perceived health, substance use and self-determination. Results: Two and a half years after entering the SRS, 81% of participants were independently housed and 19% still lived in institutions. People in institutions had a longer lifetime duration of homelessness, were more often men, and their number of days of alcohol use had decreased significantly more, whereas independently housed people had shown a significant increase in their sense of autonomy and relatedness. Conclusion: Formerly homeless people living in independent housing and in institutions show few health-related differences 2.5 years after entering the SRS, but changes in autonomy and relatedness are distinctly more prevalent, after the same period of time, in those who are independently housed. ...................

    Temporal fluctuations of waves in weakly nonlinear disordered media

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    We consider the multiple scattering of a scalar wave in a disordered medium with a weak nonlinearity of Kerr type. The perturbation theory, developed to calculate the temporal autocorrelation function of scattered wave, fails at short correlation times. A self-consistent calculation shows that for nonlinearities exceeding a certain threshold value, the multiple-scattering speckle pattern becomes unstable and exhibits spontaneous fluctuations even in the absence of scatterer motion. The instability is due to a distributed feedback in the system "coherent wave + nonlinear disordered medium". The feedback is provided by the multiple scattering. The development of instability is independent of the sign of nonlinearity.Comment: RevTeX, 15 pages (including 5 figures), accepted for publication in Phys. Rev.

    Perception of reversibility

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    Contains fulltext : 22690___.PDF (publisher's version ) (Open Access

    Factors that influence the stroke care team's effectiveness in reducing the length of hospital stay.

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    Contains fulltext : 70267.pdf (publisher's version ) (Open Access)BACKGROUND AND PURPOSE: The purpose of this study was to explore the effects of a quality improvement program for improving stroke care and the determinants of success at the team and hospital levels. Method- For 16 months, 23 multidisciplinary stroke service teams participated in a quality improvement collaborative designed to set up stroke services and reduce the length of hospital stay (LOHS). We monitored the LOHS and the discharge delay during the project and measured indicators of well organized stroke services at baseline and after the intervention. A multiple and multilevel regression model was used to relate the outcome variables to the team and hospital characteristics. National LOHS figures served as reference data. RESULTS: Data regarding 4549 stroke patients were included in the analyses. The LOHS decreased significantly from 18.3 to 13.3 days. The mean LOHS varied substantially (9.2 to 20.9 days) after the intervention. Teams with higher team functioning scores showed lower LOHS scores and higher scores for the indicators of well organized stroke services. Team characteristics explain almost 40% of the variance in LOHS and 53% in the indicators of well organized stroke care. CONCLUSIONS: Participation in a national quality improvement collaborative effected a significant decrease of the LOHS and a significant increase in the presence of key features of stroke services. Variation in ability to reduce the LOHS and increase key features of stroke services were related to team functioning. The data suggest that the composite of team functioning is pivotal in quality-of-care improvement and may need specific attention in any quality improvement program

    GPs' role security and therapeutic commitment in managing alcohol problems: a randomised controlled trial of a tailored improvement programme

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    Contains fulltext : 138061.pdf (publisher's version ) (Open Access)BACKGROUND: General practitioners with more positive role security and therapeutic commitment towards patients with hazardous or harmful alcohol consumption are more involved and manage more alcohol-related problems than others. In this study we evaluated the effects of our tailored multi-faceted improvement implementation programme on GPs' role security and therapeutic commitment and, in addition, which professional related factors influenced the impact of the implementation programme. METHODS: In a cluster randomised controlled trial, 124 GPs from 82 Dutch general practices were randomised to either the intervention or control group. The tailored, multi-faceted programme included combined physician, organisation, and patient directed alcohol-specific implementation strategies to increase role security and therapeutic commitment in GPs. The control group was mailed the national guideline and patients received feedback letters. Questionnaires were completed before and 12 months after start of the programme. We performed linear multilevel regression analysis to evaluate effects of the implementation programme. RESULTS: Participating GPs were predominantly male (63%) and had received very low levels of alcohol related education before start of the study (0.4 h). The programme increased therapeutic commitment (p = 0.005; 95%-CI 0.13 - 0.73) but not role security (p = 0.58; 95%-CI -0.31 - 0.54). How important GPs thought it was to improve their care for problematic alcohol consumption, and the GPs' reported proportion of patients asked about alcohol consumption at baseline, contributed to the effect of the programme on therapeutic commitment. CONCLUSIONS: A tailored, multi-faceted programme aimed at improving GP management of patients with hazardous and harmful alcohol consumption improved GPs' therapeutic commitment towards patients with alcohol-related problems, but failed to improve GPs' role security. How important GPs thought it was to improve their care for problematic alcohol consumption, and the GPs' reported proportion of patients asked about alcohol consumption at baseline, both increased the impact of the programme on therapeutic commitment. It might be worthwhile to monitor proceeding of role security and therapeutic commitment throughout the year after the implementation programme, to see whether the programme is effective on short term but faded out on the longer term. TRIAL REGISTRATION: ClinicalTrials.gov Identifier: NCT00298220
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