Investing in Online Video News A cross-national analysis of news organizations’ enterprising approach to digital media

Research on news organizations’ approach to digital media in the 1990s and 2000s generally found that most organizations adopted a defensive approach. Since then, both digital media and news organizations have continued to develop, and we cannot simply assume that the approach remains the same. In this paper, we analyse how a purposive sample of 19 news organizations across three different countries approach online video news—chosen as a paradigmatic example of the current move towards a more mobile, platform-dominated, and video-enabled digital media environment. On the basis of semi-structured interviews with senior people across the sample, we argue that most news organizations today adopt a far more enterprising approach to digital media than that found in the 1990s and 2000s, and invest in what they see as promising opportunities in an uncertain environment. We find that decisions to invest in online video news are shaped primarily by a perception of what audiences want, what platforms like Facebook and Google/YouTube prioritize, and the prospect of lucrative video advertising. Editorial considerations seem marginal. The enterprising approach and the considerations behind it are broadly similar across the organizations and countries covered, with exceptions (some broadcasters and German news organizations)

Don’t talk to strangers? The role of network composition, WhatsApp groups, and partisanship in explaining beliefs in misinformation about COVID-19 in Brazil

No abstract available

Explaining beliefs in electoral misinformation in the 2022 Brazilian election: the role of ideology, political trust, social media, and messaging apps

The 2022 elections in Brazil have demonstrated that disinformation can have violent consequences, particularly when it comes from the top, raising concerns around democratic backsliding. This study leverages a two-wave survey to investigate individual-level predictors of holding electoral misinformation beliefs and the role of trust and information habits during the 2022 Brazilian elections. Our findings demonstrate that susceptibility to electoral misinformation is affected by factors such as political ideology, trust in the electoral process and democratic institutions, and information consumption, with those who participate in political groups in messaging apps being more likely to believe in electoral misinformation

More diverse, more politically varied: How social media, search engines and aggregators shape news repertoires in the United Kingdom

There is still much to learn about how the rise of new, ‘distributed’, forms of news access through search engines, social media and aggregators are shaping people’s news use. We analyse passive web tracking data from the United Kingdom to make a comparison between direct access (primarily determined by self-selection) and distributed access (determined by a combination of self-selection and algorithmic selection). We find that (1) people who use search engines, social media and aggregators for news have more diverse news repertoires. However, (2) social media, search engine and aggregator news use is also associated with repertoires where more partisan outlets feature more prominently. The findings add to the growing evidence challenging the existence of filter bubbles, and highlight alternative ways of characterizing people’s online news use. </jats:p

The Contribution of Cardiac Magnetic Resonance Imaging to the Diagnosis of Cardiac Diseases

Background: Cardiac magnetic resonance imaging (MRI) has been established in clinical practice as a valid imaging modality for the diagnosis of various cardiovascular disorders. Objectives: To underline the importance of cardiac MRI as an alternative non - invasive imaging method for the diagnosis and follow-up of cardiac patients based on findings from our own recent experience. Patients and Methods: The study included all cardiac patients referred for cardiac MRI over a period of one year. Cardiac MRI studies were performed with the use of a 1.5-Tesla scanner using a body phased-array coil, breath and ECG-triggering. Almost all cardiac sequences were gated to the patient&rsquo;s cardiac cycle. Cine imaging for the evaluation of cardiac volumes and heart motion was performed using a cine breath-hold true short-axis and true four-chamber sequence with whole left ventricular coverage. Black blood imaging for the assessment of morphology was acquired on a true short-axis and true four-chamber view. Depending on the pathology under investigation, special sequences were added to the imaging protocol, such as late-enhancement imaging after gadolinium administration. Results: The study cohort comprised 114 patients who were referred for cardiac MRI with the following indications and clinical diagnoses: myocarditis (n=29), arrhythmogenic right ventricular cardiomyopathy (ARVC; n=27), valvular heart disease (n=23), history of myocardial infarction (n=13; seeking myocardial viability), hypertrophic (n=12), or dilated (n=2), or tako-tsubo (n=1), or non-compaction (n=2) cardiomyopathy, pericardial effusion (n=2) and various intracardiac masses (n=3). Cardiac MRI confirmed the clinical diagnosis and gave further specific information in 52% of myocarditis cases, in 37% of suspected ARVC cases, in 38% of coronary artery disease patients regarding myocardial viability, while it confirmed all other clinical diagnoses (100% match). Conclusions: Cardiac MRI represents a clinically useful imaging method for the diagnosis of various cardiac disorders since it has the capability of providing highly accurate and reproducible measurements of cardiac hemodynamics in addition to the detailed demonstration of cardiac anatomical structures

The role of intravascular imaging in chronic total occlusion percutaneous coronary intervention

Chronic total occlusions (CTOs) represent the most complex subset of coronary artery disease and therefore careful planning of CTO percutaneous coronary recanalization (PCI) strategy is of paramount importance aiming to achieve procedural success, and improve patient's safety and post CTO PCI outcomes. Intravascular imaging has an essential role in facilitating CTO PCΙ. First, intravascular ultrasound (IVUS), due to its higher penetration depth compared to optical coherence tomography (OCT), and the additional capacity of real-time imaging without need for contrast injection is considered the preferred imaging modality for CTO PCI. Secondly, IVUS can be used to resolve proximal cap ambiguity, facilitate wire re-entry when dissection and re-entry strategies are applied and most importantly to guide stent deployment and optimization post implantation. The role of OCT during CTO PCI is currently limited to stent sizing and optimization, however, due to its high spatial resolution, OCT is ideal for detecting stent edge dissections and strut malapposition. In this review, we describe the use of intravascular imaging for lesion crossing, plaque characterization and wire tracking, extra- or intra-plaque, and stent sizing and optimization during CTO PCI and summarize the findings of the major studies in this field

Optimasi Portofolio Resiko Menggunakan Model Markowitz MVO Dikaitkan dengan Keterbatasan Manusia dalam Memprediksi Masa Depan dalam Perspektif Al-Qur`an

Risk portfolio on modern finance has become increasingly technical, requiring the use of sophisticated mathematical tools in both research and practice. Since companies cannot insure themselves completely against risk, as human incompetence in predicting the future precisely that written in Al-Quran surah Luqman verse 34, they have to manage it to yield an optimal portfolio. The objective here is to minimize the variance among all portfolios, or alternatively, to maximize expected return among all portfolios that has at least a certain expected return. Furthermore, this study focuses on optimizing risk portfolio so called Markowitz MVO (Mean-Variance Optimization). Some theoretical frameworks for analysis are arithmetic mean, geometric mean, variance, covariance, linear programming, and quadratic programming. Moreover, finding a minimum variance portfolio produces a convex quadratic programming, that is minimizing the objective function ðð¥with constraintsð ð 𥠥 ðandð´ð¥ = ð. The outcome of this research is the solution of optimal risk portofolio in some investments that could be finished smoothly using MATLAB R2007b software together with its graphic analysis

Impacts of the Tropical Pacific/Indian Oceans on the Seasonal Cycle of the West African Monsoon

The current consensus is that drought has developed in the Sahel during the second half of the twentieth century as a result of remote effects of oceanic anomalies amplified by local land–atmosphere interactions. This paper focuses on the impacts of oceanic anomalies upon West African climate and specifically aims to identify those from SST anomalies in the Pacific/Indian Oceans during spring and summer seasons, when they were significant. Idealized sensitivity experiments are performed with four atmospheric general circulation models (AGCMs). The prescribed SST patterns used in the AGCMs are based on the leading mode of covariability between SST anomalies over the Pacific/Indian Oceans and summer rainfall over West Africa. The results show that such oceanic anomalies in the Pacific/Indian Ocean lead to a northward shift of an anomalous dry belt from the Gulf of Guinea to the Sahel as the season advances. In the Sahel, the magnitude of rainfall anomalies is comparable to that obtained by other authors using SST anomalies confined to the proximity of the Atlantic Ocean. The mechanism connecting the Pacific/Indian SST anomalies with West African rainfall has a strong seasonal cycle. In spring (May and June), anomalous subsidence develops over both the Maritime Continent and the equatorial Atlantic in response to the enhanced equatorial heating. Precipitation increases over continental West Africa in association with stronger zonal convergence of moisture. In addition, precipitation decreases over the Gulf of Guinea. During the monsoon peak (July and August), the SST anomalies move westward over the equatorial Pacific and the two regions where subsidence occurred earlier in the seasons merge over West Africa. The monsoon weakens and rainfall decreases over the Sahel, especially in August.Peer reviewe