London : G.P. Putnam's Sons, 1906.

Wien : SafÏar, 1905.

Romae: apud Dominicum Cunego.

Danilo Covaes Nogarotto, Caio Lucidius Naberezny Azevedo, Jorge Luis Bazán.

Source: Brazilian Journal of Probability and Statistics, Volume 34, Number 2, 304--322.

Abstract:
The interest on the analysis of the zero–one augmented beta regression (ZOABR) model has been increasing over the last few years. In this work, we developed a Bayesian inference for the ZOABR model, providing some contributions, namely: we explored the use of Jeffreys-rule and independence Jeffreys prior for some of the parameters, performing a sensitivity study of prior choice, comparing the Bayesian estimates with the maximum likelihood ones and measuring the accuracy of the estimates under several scenarios of interest. The results indicate, in a general way, that: the Bayesian approach, under the Jeffreys-rule prior, was as accurate as the ML one. Also, different from other approaches, we use the predictive distribution of the response to implement Bayesian residuals. To further illustrate the advantages of our approach, we conduct an analysis of a real psychometric data set including a Bayesian residual analysis, where it is shown that misleading inference can be obtained when the data is transformed. That is, when the zeros and ones are transformed to suitable values and the usual beta regression model is considered, instead of the ZOABR model. Finally, future developments are discussed.

Segmentation of cardiac images, particularly late gadolinium-enhanced magnetic resonance imaging (LGE-MRI) widely used for visualizing diseased cardiac structures, is a crucial first step for clinical diagnosis and treatment. However, direct segmentation of LGE-MRIs is challenging due to its attenuated contrast. Since most clinical studies have relied on manual and labor-intensive approaches, automatic methods are of high interest, particularly optimized machine learning approaches. To address this, we organized the "2018 Left Atrium Segmentation Challenge" using 154 3D LGE-MRIs, currently the world's largest cardiac LGE-MRI dataset, and associated labels of the left atrium segmented by three medical experts, ultimately attracting the participation of 27 international teams. In this paper, extensive analysis of the submitted algorithms using technical and biological metrics was performed by undergoing subgroup analysis and conducting hyper-parameter analysis, offering an overall picture of the major design choices of convolutional neural networks (CNNs) and practical considerations for achieving state-of-the-art left atrium segmentation. Results show the top method achieved a dice score of 93.2% and a mean surface to a surface distance of 0.7 mm, significantly outperforming prior state-of-the-art. Particularly, our analysis demonstrated that double, sequentially used CNNs, in which a first CNN is used for automatic region-of-interest localization and a subsequent CNN is used for refined regional segmentation, achieved far superior results than traditional methods and pipelines containing single CNNs. This large-scale benchmarking study makes a significant step towards much-improved segmentation methods for cardiac LGE-MRIs, and will serve as an important benchmark for evaluating and comparing the future works in the field.

We present the R package mgm for the estimation of k-order mixed graphical models (MGMs) and mixed vector autoregressive (mVAR) models in high-dimensional data. These are a useful extensions of graphical models for only one variable type, since data sets consisting of mixed types of variables (continuous, count, categorical) are ubiquitous. In addition, we allow to relax the stationarity assumption of both models by introducing time-varying versions of MGMs and mVAR models based on a kernel weighting approach. Time-varying models offer a rich description of temporally evolving systems and allow to identify external influences on the model structure such as the impact of interventions. We provide the background of all implemented methods and provide fully reproducible examples that illustrate how to use the package.

Jeng-Min Chiou, Yu-Ting Chen, Tailen Hsing.

Source: The Annals of Applied Statistics, Volume 13, Number 3, 1430--1463.

Abstract:
Motivated by the study of road segmentation partitioned by shifts in traffic conditions along a freeway, we introduce a two-stage procedure, Dynamic Segmentation and Backward Elimination (DSBE), for identifying multiple changes in the mean functions for a sequence of functional data. The Dynamic Segmentation procedure searches for all possible changepoints using the derived global optimality criterion coupled with the local strategy of at-most-one-changepoint by dividing the entire sequence into individual subsequences that are recursively adjusted until convergence. Then, the Backward Elimination procedure verifies these changepoints by iteratively testing the unlikely changes to ensure their significance until no more changepoints can be removed. By combining the local strategy with the global optimal changepoint criterion, the DSBE algorithm is conceptually simple and easy to implement and performs better than the binary segmentation-based approach at detecting small multiple changes. The consistency property of the changepoint estimators and the convergence of the algorithm are proved. We apply DSBE to detect changes in traffic streams through real freeway traffic data. The practical performance of DSBE is also investigated through intensive simulation studies for various scenarios.

Sumit Mukherjee.

Source: Bernoulli, Volume 26, Number 2, 1016--1043.

Abstract:
A sufficient criterion for “non-degeneracy” is given for Exponential Random Graph Models on sparse graphs with sufficient statistics which are functions of the degree sequence. This criterion explains why statistics such as alternating $k$-star are non-degenerate, whereas subgraph counts are degenerate. It is further shown that this criterion is “almost” tight. Existence of consistent estimates is then proved for non-degenerate Exponential Random Graph Models.

Christophe Leterrier
Feb 28, 2018; 38:2135-2145
Viewpoints

Emeran A. Mayer
Nov 12, 2014; 34:15490-15496
Symposium

Italian translation of the BIS press release about the BIS Quarterly Review, December 2017

Stress alters brain function by modifying the structure and function of neurons and astrocytes. The fine processes of astrocytes are critical for the clearance of neurotransmitters during synaptic transmission. Thus, experience-dependent remodeling of glial processes is anticipated to alter the output of neural circuits. However, the molecular mechanisms that underlie glial structural plasticity are not known. Here we show that a single exposure of male and female mice to an acute stress produced a long-lasting retraction of the lateral processes of cerebellar Bergmann glial cells. These cells express the GluA1 subunit of AMPA-type glutamate receptors, and GluA1 knockdown is known to shorten the length of glial processes. We found that stress reduced the level of GluA1 protein and AMPA receptor-mediated currents in Bergmann glial cells, and these effects were absent in mice devoid of CPEB3, a protein that binds to GluA1 mRNA and regulates GluA1 protein synthesis. Administration of a β-adrenergic receptor blocker attenuated the reduction in GluA1, and deletion of adenylate cyclase 5 prevented GluA1 suppression. Therefore, stress suppresses GluA1 protein synthesis via an adrenergic/adenylyl cyclase/CPEB3 pathway, and reduces the length of astrocyte lateral processes. Our results identify a novel mechanism for GluA1 subunit plasticity in non-neuronal cells and suggest a previously unappreciated role for AMPA receptors in stress-induced astrocytic remodeling.

SIGNIFICANCE STATEMENT Astrocytes play important roles in synaptic transmission by extending fine processes around synapses. In this study, we showed that a single exposure to an acute stress triggered a retraction of lateral/fine processes in mouse cerebellar astrocytes. These astrocytes express GluA1, a glutamate receptor subunit known to lengthen astrocyte processes. We showed that astrocytic structural changes are associated with a reduction of GluA1 protein levels. This requires activation of β-adrenergic receptors and is triggered by noradrenaline released during stress. We identified adenylyl cyclase 5, an enzyme that elevates cAMP levels, as a downstream effector and found that lowering GluA1 levels depends on CPEB3 proteins that bind to GluA1 mRNA. Therefore, stress regulates GluA1 protein synthesis via an adrenergic/adenylyl cyclase/CPEB3 pathway in astrocytes and remodels their fine processes.

These dairy products are no longer edible, but they're still valuable to researchers

The Chicago Bulls announced Marc Eversley as their new general manager on Friday, making him the first Canadian GM in NBA history.

The new reality of life under COVID-19 means Montreal Alouettes GM Danny Maciocia will be physically alone in his basement while he and his staff participate in the CFL draft.

Calgary Flames general manager Brad Treliving will watch Thursday's remote NFL draft and is planning to focus on how his football counterparts deal with the realities of their world during the COVID-19 pandemic.

When it comes to school technology, Superintendent Doug Brubaker emphasizes robust infrastructure, regular refresh cycles, and training. Taxpayers and teachers are buying into the practical approach.

How classroom-counseling programs can help address the stigma of mental health in schools.

New research suggests that English-language-learner classification has a "direct and negative effect on teachers' perceptions of students' academic skills."

The availability of rapid response systems to assist deteriorating patients is the standard of care in children’s hospitals. Metrics for evaluating their effectiveness include cardiac and respiratory arrest rates, rare events that require years of data to show significant improvements.

A proximate outcome for in-hospital mortality among patients receiving rapid response system assistance was developed. This "critical deterioration" metric was eightfold more common than arrests and demonstrated criterion and construct validity, facilitating meaningful evaluation over shorter periods of time. (Read the full article)

Universal hepatitis B virus (HBV) vaccination is a cost-effective strategy to control HBV infection. Giving hepatitis B immunoglobulin to neonates of HBV carrier mothers additionally reduces transmission but is not widely used because of its expense and infrastructure requirements.

Maternal screening for hepatitis B surface antigen and hepatitis B immunoglobulin treatment of neonates of hepatitis B virus carrier mothers could be a cost-effective addition to universal vaccination in settings in which health infrastructure can support such an intervention. (Read the full article)

The role of inhaled nitric oxide (INO) in the treatment of newborns with congenital diaphragmatic hernia (CDH) is poorly defined and not rigorously proven. Contemporary rates of INO use for CDH have not been reported.

INO use in neonates with CDH is widespread, and has increased in many US tertiary pediatric hospitals without associated decrease in extracorporeal membrane oxygenation use or mortality. (Read the full article)

Predicting high-risk populations in congenital diaphragmatic hernia (CDH) can help target care strategies. Prediction rules for infants with CDH often lack validation, are aimed at a prenatal population, and are of limited generalizability. We cannot currently discriminate the highest risk neonates during the crucial period shortly after birth.

This clinical prediction rule was developed and validated on an international database. It discriminates patients and high, intermediate, and low risk of mortality; is easy to apply; and is generalizable to most infants with CDH. (Read the full article)

Using large nationwide registers, we were unable to detect any association between augmentation of labor and ADHD in offspring. Our findings do not support a causal role of perinatal exposure to oxytocin during delivery on the development of ADHD. (Read the full article)

Maternal–child relationships among women raising children from sexual violence-related pregnancies (SVRPs) are not well understood. Limited case reports suggest widely varied and complex relationships. The determinants of these relationships are unknown.

With its large sample size, this article quantifies and analyzes maternal–child relationships among women raising children from SVRPs, and assesses the impact of stigma, acceptance, and maternal mental health on these relationships. (Read the full article)

BACKGROUND:

Congenital diaphragmatic hernia (CDH) is a rare congenital anomaly with a mortality of ~27%. The Congenital Diaphragmatic Hernia Study Group (CDHSG) developed a simple postnatal clinical prediction rule to predict mortality in newborns with CDH. Our aim for this study is to externally validate the CDHSG rule in the European population and to improve its prediction of mortality by adding prenatal variables.

Android may be leaving dessert names behind with Android 10, but its OS market share is still a buffet of Pie, Oreos, Nougat, Marshmallows, Lollipops, and even a couple of KitKats.

Prison time for other defendants on murder, weapons, racketeering, drug, and sexual abuse charges The operator of a criminal enterprise run out of several massage parlors he owned throughout the state, was found liable of 3 violations of the Racketeer Influenced and Corrupt Organizations (R.I.C.O.) statute. The State alleged that Da Zhong Wang, 55, formerly […]

Myong-Hun Chang and Joseph Harrington: The dynamics of social stigma are explored in the context of diffusion models. Our focus is on exploring the dynamic process through which the behavior of individuals and the interpersonal relationships among them influence the macro-social attitude towards the stigma. We find that a norm of tolerance is best promoted when the population comprises both those whose conduct is driven by compassion for the stigmatized and those whose focus is on conforming with others in their social networks. A second finding is that less insular social networks encourage de-stigmatization when most people are compassionate, but it is instead more insularity that promotes tolerance when society is dominated by conformity.

Here's a new angle on GDPR, likely one of many angles people haven't yet considered: Does web session recording count as collecting PII?

Augmented Reality is now being put to great use. You can have the new Lamborghini Huracán EVO RWD Spyder's launch event take place in your living room using Apple’s AR Quick Look.

One major factor Indian consumer look for in a car is space inside the cabin. A careful look is always given to the legroom for rear passengers in India. Here are 5 cars under 10 lakh that offer best rear legroom among their rivals.

Google's Gmail update went live this week. Here's what marketers need to know

Q4 Ebitda was in line with estimates; RIL on track to be debt free by end FY21, which could drive rerating; TP revised to Rs 1,618.

In part one of this blog series, we introduced the automation of AI (i.e., artificial intelligence) as a multifaceted and evolving topic for marketing and segmentation. After a discussion on maximizing the potential of a brand's first-party data, a machine learning method incorporating natural language explanations was provided in the context [...]

SAS Customer Intelligence 360: Automated AI and segmentation [Part 2] was published on Customer Intelligence Blog.

In parts one and two of this blog series, we introduced the automation of AI (i.e., artificial intelligence) and natural language explanations applied to segmentation and marketing. Following this, we began marching down the path of practitioner-oriented examples, making the case for why we need it and where it applies. [...]

SAS Customer Intelligence 360: Automated AI and segmentation [Part 3] was published on Customer Intelligence Blog.

Datsun’s Go as well as Go+ models have now received a CVT option. These come in the top trim and boast a slightly higher fuel efficiency compared to their manual counterparts or at par. How are they to drive? Take a look at our video.

The state's TMC government has been drawing consistent criticism from the Centre and opposition parties over the way it has tackled the pandemic, and has been accused of under-reporting data about the number of COVID-19 cases and deaths.

  Google has introduced an easy way to handle your email with a revamped inbox in Gmail. In its new avatar, Gmail inbox provides a hassle-free way to manage, sort and organize your email. Email inboxes...

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  Last month, Pokémon GO officially launched in… Oh, wait! Not again! Not another article about augmented reality starting with Pokémon GO! It almost seems as if Pokémon GO a...

Decides to pay each of its 48,000 union workers a record $9,000 profit-sharing bonus

ESAF has more than 96% of its exposure in the micro-segment with the average ticket size of the loan being Rs 33,000.

Lawrence's fictitious Indian National Army captain Immanuel Stanley David is faced with a wave of events, mostly untoward circumstances, after his landing in Burma during World War II.

Congress's working president and three-time minister Haroon Yusuf is confident of wresting his pocket borough this time from Aam Aadmi Pary's Imran Hussain. Mr Yusuf had won from the Muslim-dominated...

India's Biggest Film Funding Platform, Film Funding Network directly connects a global network of investors, HNIs with filmmakers for funding movies, short films, TV shows.