Informationsmanagement aus Sicht der Betriebswirtschaftslehre

Das Informationsmanagement hat seinen Status als modisches Schlagwort inzwischen überwunden und stellt ein etabliertes Themengebiet mit immer noch steigender Relevanz für Theorie und Praxis der Unternehmungsführung dar. Trotz zahlreicher Veröffentlichungen liegt eine umfassende theoretische Fundierung dieses Problembereichs jedoch bisher nicht vor. Die Arbeit konzipiert das Informationsmanagement als spezielles Untersuchungsfeld der Betriebswirtschaftslehre und leitet aus bestehenden Forschungsansätzen dieser Disziplin Anhaltspunkte für die Gestaltung und Steuerung der betrieblichen Informationsverarbeitung ab. Die entwickelten Theorieansätze werden am konkreten Anwendungsbeispiel Mobile Business zusammengeführt

Climate Impact and Model Approaches of Blue-Green Infrastructure Measures for Neighborhood Planning

Nowadays, most cities deal with the problem of “Urban Heat Islands”. Especially existing city districts cannot easily be adapted. In this paper, the effects of blue-green infrastructure elements (BGI) on air and surface temperature in courtyards are examined, based on on-site measurements and simulations. Recognizable effects on the temperature were observed: BGI lower the number of hot days in the courtyard, including a faster air temperature drop at night, but water elements increase the number of tropical nights due to their heat capacity. Model simulations with PALM-4U proved to be useful to analyze the effects of BGI on the microclimate. Besides analyzing existing structures, the effects of planned measures can be quantified by simulation. However, for this application, needs of improvement were recognized to evaluate the influence of BGI on the microclimate more realistically. For decision support, standard indicators such as the number of tropical nights and hot days are not differentiated enough to quantify specific climate stress of urban residents. It is suggested to consider summer days additionally, percentiles could be used instead of fixed thresholds and the entire course of the year should play a role in the evaluation of the elements and urban design

Searches at HERA for Squarks in R-Parity Violating Supersymmetry

A search for squarks in R-parity violating supersymmetry is performed in e^+p collisions at HERA at a centre of mass energy of 300 GeV, using H1 data corresponding to an integrated luminosity of 37 pb^(-1). The direct production of single squarks of any generation in positron-quark fusion via a Yukawa coupling lambda' is considered, taking into account R-parity violating and conserving decays of the squarks. No significant deviation from the Standard Model expectation is found. The results are interpreted in terms of constraints within the Minimal Supersymmetric Standard Model (MSSM), the constrained MSSM and the minimal Supergravity model, and their sensitivity to the model parameters is studied in detail. For a Yukawa coupling of electromagnetic strength, squark masses below 260 GeV are excluded at 95% confidence level in a large part of the parameter space. For a 100 times smaller coupling strength masses up to 182 GeV are excluded.Comment: 32 pages, 14 figures, 3 table

Multiplicity Structure of the Hadronic Final State in Diffractive Deep-Inelastic Scattering at HERA

The multiplicity structure of the hadronic system X produced in deep-inelastic processes at HERA of the type ep -> eXY, where Y is a hadronic system with mass M_Y< 1.6 GeV and where the squared momentum transfer at the pY vertex, t, is limited to |t|<1 GeV^2, is studied as a function of the invariant mass M_X of the system X. Results are presented on multiplicity distributions and multiplicity moments, rapidity spectra and forward-backward correlations in the centre-of-mass system of X. The data are compared to results in e+e- annihilation, fixed-target lepton-nucleon collisions, hadro-produced diffractive final states and to non-diffractive hadron-hadron collisions. The comparison suggests a production mechanism of virtual photon dissociation which involves a mixture of partonic states and a significant gluon content. The data are well described by a model, based on a QCD-Regge analysis of the diffractive structure function, which assumes a large hard gluonic component of the colourless exchange at low Q^2. A model with soft colour interactions is also successful.Comment: 22 pages, 4 figures, submitted to Eur. Phys. J., error in first submission - omitted bibliograph

Measurements of Transverse Energy Flow in Deep-Inelastic Scattering at HERA

Measurements of transverse energy flow are presented for neutral current deep-inelastic scattering events produced in positron-proton collisions at HERA. The kinematic range covers squared momentum transfers Q^2 from 3.2 to 2,200 GeV^2, the Bjorken scaling variable x from 8.10^{-5} to 0.11 and the hadronic mass W from 66 to 233 GeV. The transverse energy flow is measured in the hadronic centre of mass frame and is studied as a function of Q^2, x, W and pseudorapidity. A comparison is made with QCD based models. The behaviour of the mean transverse energy in the central pseudorapidity region and an interval corresponding to the photon fragmentation region are analysed as a function of Q^2 and W.Comment: 26 pages, 8 figures, submitted to Eur. Phys.

Spotlights on Contemporary Family Life

Spotlights on Contemporary Family Life covers four issues of cross-cutting importance to families Structures and forms of families: issues relating to a diversification of families away from the ‘traditional nuclear family form’ are relatively uncontroversial from an academic perspective, but much more so for policy makers and family associations. Chapter 1 provides a thorough overview of the state of contemporary European families. Solidarities in families: too often the issue of an ‘ageing society’ is simply reduced to the problem of over-burdening social care systems, but longevity also represents opportunities for new kinds of solidarities inside families and family networks, and new relations between family members – not to mention the satisfaction felt by people who can continue to live fulfilling and rewarding lives long after they’re considered ‘elderly’. Chapter 2 gives voice to authors who identify these new opportunities and challenges. Demographic change: women are having fewer children and having them later in life. Having children is now a conscious decision and fertility rates have declined below the level required to sustain our current populations. At the same time we witness the ‘greying’ of Europe, which brings with it a whole host of opportunities and challenges. Chapter 3 raises important issues for policy makers today. Volunteering: inspired by family associations who could not survive without the support of volunteers, this chapter gives an overview of what’s known - and what isn’t - about volunteering. Coinciding with the European Year of Volunteering 2011, this chapter takes a timely look at the efforts that families put into volunteering across Europe and the important benefits that Europe gains from all of this combined voluntary effort. Linden Farrer and William Lay work for the Confederation of Family Organisations in the European Union (COFACE). This publication was produced by FAMILYPLATFORM, a project funded by the European Commission

Forward Jet and Particle Production at HERA

Single particles and jets in deeply inelastic scattering at low x are measured with the H1 detector in the region away from the current jet and towards the proton remnant, known as the forward region. Hadronic final state measurements in this region are expected to be particularly sensitive to QCD evolution effects. Jet cross sections are presented as a function of Bjorken- x for forward jets produced with a polar angle to the proton direction, θ jet , in the range 7° < θ jet < 20°. Azimuthal correlations are studied between the forward jet and the scattered lepton. Charged and neutral single particle production in the forward region are measured as a function of Bjorken- x , in the range 5° < θ < 25°, for particle transverse momenta larger than 1 GeV. QCD based Monte Carlo predictions and analytical calculations based on BFKL, CCFM and DGLAP evolution are compared to the data. Predictions based on the DGLAP approach fail to describe the data, except for those which allow for a resolved photon contribution

Diffractive dijet production at HERA

Interactions of the type ep -> eXY are studied, where the component X of the hadronic final state contains two jets and is well separated in rapidity from a leading baryonic system Y. Analyses are performed of both resolved and direct photoproduction and of deep-inelastic scattering with photon virtualities in the range 7.5 5 GeV relative to the photon direction in the rest frame of X. Models based on a factorisable diffractive exchange with a gluon dominated structure, evolved to a scale set by the transverse momentum p^hat_T of the outgoing partons from the hard interaction, give good descriptions of the data. Exclusive qqbar production, as calculated in perturbative QCD using the squared proton gluon density, represents at most a small fraction of the measured cross section. The compatibility of the data with a breaking of diffractive factorisation due to spectator interactions in resolved photoproduction is investigated

Hematopoietic stem cell transplantation for adolescents and adults with inborn errors of immunity: an EBMT IEWP study.

peer reviewedAllogeneic hematopoietic stem cell transplantation (HSCT) is the gold standard curative therapy for infants and children with many inborn errors of immunity (IEI), but adolescents and adults with IEI are rarely referred for transplant. Lack of published HSCT outcome data outside small, single-center studies and perceived high risk of transplant-related mortality have delayed the adoption of HSCT for IEI patients presenting or developing significant organ damage later in life. This large retrospective, multicenter HSCT outcome study reports on 329 IEI patients (age range, 15-62.5 years at HSCT). Patients underwent first HSCT between 2000 and 2019. Primary endpoints were overall survival (OS) and event-free survival (EFS). We also evaluated the influence of IEI-subgroup and IEI-specific risk factors at HSCT, including infections, bronchiectasis, colitis, malignancy, inflammatory lung disease, splenectomy, hepatic dysfunction, and systemic immunosuppression. At a median follow-up of 44.3 months, the estimated OS at 1 and 5 years post-HSCT for all patients was 78% and 71%, and EFS was 65% and 62%, respectively, with low rates of severe acute (8%) or extensive chronic (7%) graft-versus-host disease. On univariate analysis, OS and EFS were inferior in patients with primary antibody deficiency, bronchiectasis, prior splenectomy, hepatic comorbidity, and higher hematopoietic cell transplant comorbidity index scores. On multivariable analysis, EFS was inferior in those with a higher number of IEI-associated complications. Neither age nor donor had a significant effect on OS or EFS. We have identified age-independent risk factors for adverse outcome, providing much needed evidence to identify which patients are most likely to benefit from HSCT

Informationsmanagement aus Sicht der Betriebswirtschaftslehre

Das Informationsmanagement hat seinen Status als modisches Schlagwort inzwischen überwunden und stellt ein etabliertes Themengebiet mit immer noch steigender Relevanz für Theorie und Praxis der Unternehmungsführung dar. Trotz zahlreicher Veröffentlichungen liegt eine umfassende theoretische Fundierung dieses Problembereichs jedoch bisher nicht vor. Die Arbeit konzipiert das Informationsmanagement als spezielles Untersuchungsfeld der Betriebswirtschaftslehre und leitet aus bestehenden Forschungsansätzen dieser Disziplin Anhaltspunkte für die Gestaltung und Steuerung der betrieblichen Informationsverarbeitung ab. Die entwickelten Theorieansätze werden am konkreten Anwendungsbeispiel Mobile Business zusammengeführt