855 research outputs found
Governance of Offshore IT Outsourcing at Shell Global Functions IT-BAM Development and Application of a Governance Framework to Improve Outsourcing Relationships
The lack of effective IT governance is widely recognized as a key inhibitor to successful global IT outsourcing relationships. In this study we present the development and application of a governance framework to improve outsourcing relationships. The approach used to developing an IT governance framework includes a meta model and a customization process to fit the framework to the target organization. The IT governance framework consists of four different elements (1) organisational structures, (2) joint processes between in- and outsourcer, (3) responsibilities that link roles to processes and (4) a diverse set of control indicators to measure the success of the relationship. The IT governance framework is put in practice in Shell GFIT BAM, a part of Shell that concluded to have a lack of management control over at least one of their outsourcing relationships. In a workshop the governance framework was used to perform a gap analysis between the current and desired governance. Several gaps were identified in the way roles and responsibilities are assigned and joint processes are set-up. Moreover, this workshop also showed the usefulness and usability of the IT governance framework in structuring, providing input and managing stakeholders in the discussions around IT governance
The glyoxal budget and its contribution to organic aerosol for Los Angeles, California, during CalNex 2010
Recent laboratory and field studies have indicated that glyoxal is a potentially large contributor to secondary organic aerosol mass. We present in situ glyoxal measurements acquired with a recently developed, high sensitivity spectroscopic instrument during the CalNex 2010 field campaign in Pasadena, California. We use three methods to quantify the production and loss of glyoxal in Los Angeles and its contribution to organic aerosol. First, we calculate the difference between steady state sources and sinks of glyoxal at the Pasadena site, assuming that the remainder is available for aerosol uptake. Second, we use the Master Chemical Mechanism to construct a two-dimensional model for gas-phase glyoxal chemistry in Los Angeles, assuming that the difference between the modeled and measured glyoxal concentration is available for aerosol uptake. Third, we examine the nighttime loss of glyoxal in the absence of its photochemical sources and sinks. Using these methods we constrain the glyoxal loss to aerosol to be 0-5 Ă 10-5 s-1 during clear days and (1 ± 0.3) Ă 10-5 s-1 at night. Between 07:00-15:00 local time, the diurnally averaged secondary organic aerosol mass increases from 3.2 ÎŒg m-3 to a maximum of 8.8 ÎŒg m -3. The constraints on the glyoxal budget from this analysis indicate that it contributes 0-0.2 ÎŒg m-3 or 0-4% of the secondary organic aerosol mass. Copyright 2011 by the American Geophysical Union
Radio Continuum and Recombination Line Study of UC HII Regions with Extended Envelopes
We have carried out 21 cm radio continuum observations of 16 UC HII regions
using the VLA (D-array) in search of associated extended emission. We have also
observed H76 recombination line towards all the sources and
He76 line at the positions with strong H76 line emission. The
UC HII regions have simple morphologies and large (>10) ratios of single-dish
to VLA fluxes. Extended emission was detected towards all the sources. The
extended emission consists of one to several compact components and a diffuse
extended envelope. All the UC HII regions but two are located in the compact
components, where the UC HII regions always correspond to their peaks. The
compact components with UC HII regions are usually smaller and denser than
those without UC HII regions. Our recombination line observations indicate that
the ultracompact, compact, and extended components are physically associated.
The UC HII regions and their associated compact components are likely to be
ionized by the same sources on the basis of the morphological relations
mentioned above. This suggests that almost all of the observed UC HII regions
are not `real' UC HII regions and that their actual ages are much greater than
their dynamical age (<10000 yr). We find that most of simple UC HII regions
previously known have large ratios of single-dish to VLA fluxes, similar to our
sources. Therefore, the `age problem' of UC HII regions does not seem to be as
serious as earlier studies argued. We present a simple model that explains
extended emission around UC HII regions. Some individual sources are discussed.Comment: 29 pages, 28 postscript figures, Accepted for publication in Ap
ViabilitĂ© et quantification dâune levure probiotique dans le systĂšme digestif du porc
Viability and colonisation of a probiotic yeast in the digestive tract of pigletsProbiotics have been defined as « live microorganisms which when administered in adequate amounts confer a health benefit on the host» (WHO, 2001). This definition implies that viability is an important factor and that the probiotic needs to reach its target site alive and in significant number in order to confer beneficial properties. Therefore, we investigated the survival and the level of the probiotic yeast Saccharomyces cerevisiae CNCM I-1079 (SB) along the gut of pigs and in faeces. For this purpose, 3 piglets from SB supplemented sows were orally dosed with SB for a week before sacrifice at 21 days of age. Faecal samples were collected as well as intestinal tract compartment content for yeast count and characterization. We have used advanced techniques to be able to identify and enumerate accurately SB from other yeasts according to morphology and biomolecular profile criteria. We have demonstrated that SB remains viable and in proportionally high number along the gut of pigs and in faeces, suggesting that both sites of main actions for probiotics (small intestine and hindgut) can benefit from the presence of live yeast cells at a biologically significant level
Citizens' Acceptance of Data-Driven Political Campaigning: A 25-Country Cross-National Vignette Study
This paper investigates how the acceptance of data-driven political campaigning depends on four different message characteristics. A vignette study was conducted in 25 countries with a total of 14,390 respondents who all evaluated multiple descriptions of political advertisements. Relying on multi-level models, we find that in particular the source and the issue of the message matters. Messages that are sent by a party the respondent likes and deal with a political issue the respondent considers important are rated more acceptable. Furthermore, targeting based on general characteristics instead of individual ones is considered more acceptable, as is a general call to participate in the upcoming elections instead of a specific call to vote for a certain party. Effects differ across regulatory contexts, with the negative impact of both individual targeting and a specific call to vote for a certain party being in countries that have higher levels of legislative regulation
Myopericarditis diagnosed by a 64-slice coronary CT angiography "triple rule out" protocol
We report a case of myopericarditis in a 30-year-old male complaining of shortness of breath. In an emergency department (ED) setting, the symptoms of myopericarditis may overlap with many disease entities and can be a challenging diagnosis to make. However, with the use of a 64-section coronary CT angiography in a âtriple rule outâ (TRO) protocol, we were able to detect a large pericardial effusion surrounding the heart and moderate global hypokinesis in the setting of normal-sized heart chambers and normal coronary arteries. We were further able to exclude pulmonary embolism and thoracic dissection. This is the first reported case of diagnosing myopericarditis using a TRO protocol. It demonstrates the usefulness of TRO in making an emergent diagnosis of myopericarditis while excluding other life-threatening diseases that can lead to earlier appropriate ED disposition and care
Continuum of vasodilator stress from rest to contrast medium to adenosine hyperemia for fractional flow reserve assessment
Objectives:
This study compared the diagnostic performance with adenosine-derived fractional flow reserve (FFR) â€0.8 of contrast-based FFR (cFFR), resting distal pressure (Pd)/aortic pressure (Pa), and the instantaneous wave-free ratio (iFR).
Background:
FFR objectively identifies lesions that benefit from medical therapy versus revascularization. However, FFR requires maximal vasodilation, usually achieved with adenosine. Radiographic contrast injection causes submaximal coronary hyperemia. Therefore, intracoronary contrast could provide an easy and inexpensive tool for predicting FFR.
Methods:
We recruited patients undergoing routine FFR assessment and made paired, repeated measurements of all physiology metrics (Pd/Pa, iFR, cFFR, and FFR). Contrast medium and dose were per local practice, as was the dose of intracoronary adenosine. Operators were encouraged to perform both intracoronary and intravenous adenosine assessments and a final drift check to assess wire calibration. A central core lab analyzed blinded pressure tracings in a standardized fashion.
Results:
A total of 763 subjects were enrolled from 12 international centers. Contrast volume was 8 ± 2 ml per measurement, and 8 different contrast media were used. Repeated measurements of each metric showed a bias <0.005, but a lower SD (less variability) for cFFR than resting indexes. Although Pd/Pa and iFR demonstrated equivalent performance against FFR â€0.8 (78.5% vs. 79.9% accuracy; p = 0.78; area under the receiver-operating characteristic curve: 0.875 vs. 0.881; p = 0.35), cFFR improved both metrics (85.8% accuracy and 0.930 area; p < 0.001 for each) with an optimal binary threshold of 0.83. A hybrid decision-making strategy using cFFR required adenosine less often than when based on either Pd/Pa or iFR.
Conclusions:
cFFR provides diagnostic performance superior to that of Pd/Pa or iFR for predicting FFR. For clinical scenarios or health care systems in which adenosine is contraindicated or prohibitively expensive, cFFR offers a universal technique to simplify invasive coronary physiological assessments. Yet FFR remains the reference standard for diagnostic certainty as even cFFR reached only âŒ85% agreement
The role of cystatin C as a biomarker for prognosis in pulmonary arterial hypertension due to congenital heart disease
AbstractBackgroundAdults with pulmonary arterial hypertension due to congenital heart disease (PAH-CHD) have a poor prognosis. Identifying patients with a high risk for clinical events and death is important because their prognosis can be improved by intensifying their treatment. Cystatin C, a novel cardiac biomarker, correlates with right ventricular dimensions in patients with idiopathic PAH, giving it potential to determine prognosis in PAH-CHD patients. We investigated the predictive value of cystatin C for long-term mortality and clinical events.MethodsFifty-nine PAH-CHD patients (mean age 42 SD 13 years, 42% male) were included in this prospective observational study, with cystatin C measurements between 2005 and 2015 on the outpatient clinic. Patients were evaluated with a standardized evaluation protocol including laboratory, functional and echocardiographic variables. Clinical events comprised worsening functional classification, worsening heart failure, symptomatic hyperviscosity, haemoptysis and arrhythmia. We used Cox regression to determine predictors for mortality and clinical events.ResultsMean follow-up was 4.4years, during which 12 (20%) patients died. Cystatin C (HR 1.3, p<0.001), creatinine (HR 1.2, p<0.001), NT-pro-BNP (HR 2.0, p=0.012), hs-troponin T (HR 1.9, p=0.005), 6-MWD (HR 0.8, p=0.044) and TAPSE (HR 0.8, p<0.001) predicted mortality. Similar results were found for the prediction of clinical events. When adjusted for NT-pro-BNP or glomerular filtration rate in multivariate analysis, cystatin C remained predictive for mortality.ConclusionsCystatin C, a novel cardiac biomarker, predicts long-term mortality and clinical events in patients with PAH-CHD. Consequently, cystatin C may attribute to clinical decision making regarding treatment intensity
A tribute to JosĂ© MarĂa ("Chema") CantĂș
JosĂ© MarĂa ("Chema") CantĂș (1938-2007), nacido en MĂ©xico, fue un lĂder pionero, amado y respetado en genĂ©tica mĂ©dica y humana y bioĂ©tica en AmĂ©rica Latina. Se graduĂł como mĂ©dico en MĂ©xico y luego se formĂł en genĂ©tica mĂ©dica y humana en Francia y los Estados Unidos. Fue instrumental en el desarrollo de un programa de investigaciĂłn, capacitaciĂłn y genĂ©tica de primera categorĂa en genĂ©tica mĂ©dica y humana en Guadalajara, en el noroeste de MĂ©xico. ActuĂł enĂ©rgicamente a nivel nacional, regional e internacional para promover el desarrollo cientĂfico a travĂ©s de la colaboraciĂłn y la educaciĂłn en ciencias y humanidades, al mismo tiempo que se esforzaba por la justicia, la paz, el amor y los derechos humanos. Ăl alcanzĂł algunos de los honores mĂĄs altos que un cientĂfico y un humanista podĂan aspirar asĂ como el reconocimiento de las comunidades que Ă©l sirviĂł. Cientos de discĂpulos de AmĂ©rica Latina y del mundo se han inspirado en su visiĂłn de un mundo mejor a travĂ©s de la conjunciĂłn de la ciencia, el respeto a la humanidad, la Ă©tica y el amor.JosĂ© MarĂa (âChemaâ) CantĂș (1938-2007), born in Mexico, was a pioneering, loved and respected leader in medical and human genetics and bioethics in Latin America. He graduated as a physician in Mexico and then trained in medical and human genetics in France and the United States. He was instrumental in developing a first-rate research, training and genetic services program in medical and human genetics in Guadalajara, in northwestern Mexico. He acted forcefully at national, regional and international levels to promote scientific development through collaboration and education in science and humanities, while he simultaneously strived for justice, peace, love and human rights. He attained some of the highest honors a scientist and humanist could aspire to as well as the recognition of the communities he served. Hundreds of disciples throughout Latin America and the world have been inspired by his vision of a better world through the conjunction of science, respect for humankind, ethics and love
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