Realizing Business Benefits from Company IT Standardization: Case Study Research into the Organizational Value of IT Standards, Towards a Company IT Standardization Management Framework.

From a practical point of view, this research provides insight into how company IT standards affect business process performance. Furthermore it gives recommendations on how to govern and manage such standards successfully with regard to their selection, implementation and usage. After evaluating this research Business may wish to reconsider the way it currently views the value of company IT standards and the manner with which it deals with them.

The reduction of the critical current in Nb3Sn cables under transverse loads

The degradation of the critical current of impregnated Rutherford type Nb3Sn cables was investigated as a function of the applied transverse load and magnetic field. The cable is made of modified jelly-roll-type strand material and has a keystone angle of 1.0°. The voltage-current characteristics were determined for the magnetic field ranging from 2 to 11 T and transverse pressure up to 250 MPa on the cable surface. It was found that the 48-strand cable, made of strands with six elements in the matrix, showed a larger critical current degradation than the 26-strand cable with 36 elements per strand. The global degradation of the 48-strand cable was 63% at 150 MPa, and 40% at 150 MPa for the 26-strand cable. Microanalysis of the cross-section before and after compression is presented, showing significant permanent damage to the superconducting strands

Search for gravitational waves from Scorpius X-1 in the second Advanced LIGO observing run with an improved hidden Markov model

We present results from a semicoherent search for continuous gravitational waves from the low-mass x-ray binary Scorpius X-1, using a hidden Markov model (HMM) to track spin wandering. This search improves on previous HMM-based searches of LIGO data by using an improved frequency domain matched filter, the J-statistic, and by analyzing data from Advanced LIGO's second observing run. In the frequency range searched, from 60 to 650 Hz, we find no evidence of gravitational radiation. At 194.6 Hz, the most sensitive search frequency, we report an upper limit on gravitational wave strain (at 95% confidence) of h095%=3.47×10-25 when marginalizing over source inclination angle. This is the most sensitive search for Scorpius X-1, to date, that is specifically designed to be robust in the presence of spin wandering. © 2019 American Physical Society

Search for Tensor, Vector, and Scalar Polarizations in the Stochastic Gravitational-Wave Background

The detection of gravitational waves with Advanced LIGO and Advanced Virgo has enabled novel tests of general relativity, including direct study of the polarization of gravitational waves. While general relativity allows for only two tensor gravitational-wave polarizations, general metric theories can additionally predict two vector and two scalar polarizations. The polarization of gravitational waves is encoded in the spectral shape of the stochastic gravitational-wave background, formed by the superposition of cosmological and individually unresolved astrophysical sources. Using data recorded by Advanced LIGO during its first observing run, we search for a stochastic background of generically polarized gravitational waves. We find no evidence for a background of any polarization, and place the first direct bounds on the contributions of vector and scalar polarizations to the stochastic background. Under log-uniform priors for the energy in each polarization, we limit the energy densities of tensor, vector, and scalar modes at 95% credibility to Ω0T<5.58×10-8, Ω0V<6.35×10-8, and Ω0S<1.08×10-7 at a reference frequency f0=25 Hz. © 2018 American Physical Society

Erratum: "A Gravitational-wave Measurement of the Hubble Constant Following the Second Observing Run of Advanced LIGO and Virgo" (2021, ApJ, 909, 218)

[no abstract available

Factors Associated with Revision Surgery after Internal Fixation of Hip Fractures

Background: Femoral neck fractures are associated with high rates of revision surgery after management with internal fixation. Using data from the Fixation using Alternative Implants for the Treatment of Hip fractures (FAITH) trial evaluating methods of internal fixation in patients with femoral neck fractures, we investigated associations between baseline and surgical factors and the need for revision surgery to promote healing, relieve pain, treat infection or improve function over 24 months postsurgery. Additionally, we investigated factors associated with (1) hardware removal and (2) implant exchange from cancellous screws (CS) or sliding hip screw (SHS) to total hip arthroplasty, hemiarthroplasty, or another internal fixation device. Methods: We identified 15 potential factors a priori that may be associated with revision surgery, 7 with hardware removal, and 14 with implant exchange. We used multivariable Cox proportional hazards analyses in our investigation. Results: Factors associated with increased risk of revision surgery included: female sex, [hazard ratio (HR) 1.79, 95% confidence interval (CI) 1.25-2.50; P = 0.001], higher body mass index (fo

Realizing business benefits from company IT standardization: Case study research into the organizational value of IT standards, towards a company IT standardization management framework

From a practical point of view, this research provides insight into how company IT standards affect business process performance. Furthermore it gives recommendations on how to govern and manage such standards successfully with regard to their selection, implementation and usage. After evaluating this research Business may wish to reconsider the way it currently views the value of company IT standards and the manner with which it deals with them

Effects of IS standardization on business process performance:A case in HR IS company standardization

In this study a research model is designed that describes the effects of IS company standards on business performance. This model is based on a pilot case study and on the small amount of literature available on company standards. Subsequently, the descriptive model is used in an in-depth case study at a large financial services corporation. This study is part of a series of case studies that will be used to validate the model. The case study describes the implementation, usage and effects of a HR IS standard The goal is to provide a HR information infrastructure to support HR processes on a global, Business Unit and local level. The effects of these standards on HR business process performance are identified. To conclude, implications for future research are presented.</p

On the effects of IS company standards on business process performance

In this study a research model is designed that describes the effects on business performance of IS company standards facilitating processes. This model is based on a pilot case study and the small number of literature available on company standards. Subsequently, the descriptive model is used in two in-depth case studies at a large financial services corporation. The first one concerns the effects of introducing an IS product standard in a business unit and the other considers the usage of process standards in a software development department. Effects of these standards are identified, also in relation to flexibility. To conclude, implications for future research are presented