For single-voxel spectroscopy, the acquisition of the spectrum is typically repeated n times and then combined with a factor sqrt[n] in order to improve the signal-to-noise ratio. In practice, the acquisitions are not only affected by random noise but also by physiologic motion and subject movements. Since the influence of physiologic motion such as cardiac and respiratory motion on the data is...

Landsat remote sensing of the central African humid tropics is confounded by persistent cloud cover and, since 2003, missing data due to the Landsat-7 Enhanced Thematic Mapper Plus (ETM + ) scan line corrector (SLC) malfunction. To quantify these limitations and their effects on contemporary forest cover and change characterization, a comparison was made of multiple Landsat-7 image mosaics gene...

TO THE EDITOR—In their letter [1], Mills and Linkin question the conclusion of our recent study that patient-to-patient transmission of Staphylococcus aureus rarely occurs on an intensive care unit [2]. Over 14 months, we detected only 7 patient-to-patient transmissions using whole-genome sequencing, a finding that strongly supports our conclusions. Furthermore, patient-to-patient transmission ...

Introduction The need exists for a functional MRI (fMRI) technique capable of artifact-free whole brain coverage, with good blood oxygenation level dependent (BOLD) contrast to noise ratio (CNR), and high temporal resolution. Conventional gradient echo (GRE) BOLD fMRI suffers from signal dropout in regions of magnetic field inhomogeneity, limiting coverage, while spin echo fMRI has reduced BOLD...

Acquisitions enable target chief executive officers (CEOs) to remove liquidity restrictions on stock and option holdings and diminish the illiquidity discount. Acquisitions also enable acquirer CEOs to improve the long-term value of overvalued holdings. Examining all firms during 1993 to 2001, we show that CEOs with higher holdings (illiquidity discount) are more likely to make acquisitions (ge...

Numerous reasons for Enterprise Resource Planning (ERP) system acquisitions in organizations have been proposed in the prior research. In this paper these different reasons for ERP system acquisitions are synthesized and categorized into technological and business reasons. Further, the prevalence of the different reasons is explored with an empirical data concerning the ERP acquisition in 41 Fi...

We develop a capabilities-based theory of acquirer target selection, arguing that acquirers will pursue both low capability targets in existing contexts to deploy existing capabilities, and high capability targets in new contexts to acquire new capabilities. These arguments are formalized in an analytical model that jointly considers the benefits and costs of acquisition as a function of target...

Acquisitions are risky events but not all acquisitions involve the same levels of risk. We suggest that announced acquisition motive – ‘why’ is an important risk signal. categorize motives and distinguish between with ‘pure explore’ exploit’ motives. Recognizing most have multiple motives, we identify ‘ambidextrous’ different combinations explorative exploitative too. Then, building on recent c...

INTRODUCTION Dynamic image acquisition with (18)F-Choline [fluorocholine (FCH)] PET/CT in prostate cancer is mostly used to overcome the bladder repletion, which could obstruct the loco-regional analysis. The aim of our study was to analyze early dynamic FCH acquisitions to define pelvic lymph node or prostate pathological status. MATERIAL AND METHODS Retrospective analysis was performed on 3...