Sharp weighted bounds for one-sided and multiple integral operators

In this paper we establish sharp weighted bounds (Buckley type theorems) for one{sided maximal and fractional integral operators in terms of one{sided $A_p$ characteristics. Appropriate sharp bounds for strong maximal functions, multiple potentials and singular integrals are derived

Too-Much-of-a-Good-Thing Effect of Prosocial Silence and Voice

This study assesses the effects of prosocial silence and voice on organizational citizenship behaviors directed towards individuals under the “Too-Much-of-a-Good-Thing” theory. It is assumed that greater prosocial silence and voice lead to organizational citizenship. However, the theory of too-much-of-a-good-thing suggests that extreme behaviors may perversely have a negative effect raising the possibility that the relationship is curvilinear rather than linear. A similar nonlinear relationship is suggested in this study. Standardized measures of prosocial voice, prosocial silence and organizational citizenship were collected from 381 faculty members from three mid-cycle universities. Regression analyses revealed a significant curvilinear (an inverted U-Shaped) relationship between prosocial voice and organizational citizenship and likewise prosocial silence and organizational citizenship. Too little and, similarly, too much prosocial voice and silence were associated with worse organizational citizenship

XmoNet:a Fully Convolutional Network for Cross-Modality MR Image Inference

Magnetic resonance imaging (MRI) can generate multimodal scans with complementary contrast information, capturing various anatomical or functional properties of organs of interest. But whilst the acquisition of multiple modalities is favourable in clinical and research settings, it is hindered by a range of practical factors that include cost and imaging artefacts.We propose XmoNet, a deep-learning architecture based on fully convolutional networks (FCNs) that enables cross-modality MR image inference. This multiple branch architecture operates on various levels of image spatial resolutions, encoding rich feature hierarchies suited for this image generation task. We illustrate the utility of XmoNet in learning the mapping between heterogeneous T1- and T2-weighted MRI scans for accurate and realistic image synthesis in a preliminary analysis. Our ndings support scaling the work to include larger samples and additional modalities

Performance of blended cement concrete exposed to marine environment

Reinforced concrete exposed to the marine environment deteriorates more rapidly. Structures constructed at or near the sea shore have to be repaired more often than comparable structures located elsewhere. This study was carried out to develop an understanding of the performance of concrete made up of cements blended by pozzolanic materials. Several mix designs were formulated, incorporating the pozzolans like slag, fly ash and silica fume and calcium nitrate as the corrosion inhibitor. Mix designs were in accordance with ACI 211-1 and pozzolanic materials were added in accordance with ACI 233 and ACI 234. A number of tests were carried out during the study to compare the performance of samples cast from concrete of different mix designs. Tests conducted during the study were Rapid Migration Test (NT Build 492), Half Cell Potential (ASTM C 876), Absorptivity of the oven-dried samples (ASTM C 642), Compressive Strength Test (ASTM C 39) and Flexural Strength Test (ASTM C 293). Results showed that in almost all cases, use of cements blended with pozzolanic materials resulted in an enhanced performance of the concrete. Use of supplementary cementitious materials (SCM) in concrete provides a sustainable and feasible solution to the durability problems in coastal areas. Replacements of OPC by the pozzolan will not only help in conservation of natural resources, but it will also contribute towards reducing pollution and energy

A Bibliometric Analysis of the Top 100 Cited Articles on Hepatic Magnetic Resonance Imaging.

The purpose of this study is to guide the readers to the impact of the articles published on hepatic magnetic resonance imaging (MRI). We searched Scopus using 10 different search terms for hepatic MRI. The selected studies were thoroughly reviewed by two independent authors and any disagreement was sorted out by mutual consensus. The list of articles and journals was downloaded into an excel spreadsheet. Only the top 100 cited articles were selected by mutual consensus among all the authors. These articles were further read in the full-text form and were further categorized into subgroups. Three authors independently reviewed the top 100 selected articles, and subsequently data was extracted from them and analyzed. Our study showed that the highest number of top 100 cited articles on hepatic MRI were from Radiology (30 articles) followed by European Radiology (14 articles). The American Journal of Roentgenology, Radiographics, and Journal of Magnetic Resonance had seven articles each. The United States had the highest number of articles by region. Nineteen other journals contributed only one article each to the list of top 100 cited articles. The contribution of authors to the top 100 cited articles was reviewed; all the authors contributing with more than two articles to the highly cited articles are given in Table 3 in the supplementary material. The maximum number of articles were published during 2009 (14 articles), and for a five-year period, the maximum contribution was made during 2008-2013 (44 articles). Our analysis gives an insight on the frequency of citations of top articles on hepatic MRI, categorizes the subtopics, the timeline of the publications, and contributions from different geographic distributions

Acute necrotizing encephalopathy of childhood: a fatal complication of swine flu

Acute necrotizing encephalopathy of childhood (ANEC) is a rare condition characterized by the presence of multifocal symmetrical brain lesions involving mainly thalami, brainstem, cerebellum and white matter. ANEC is a serious and life threatening complication of simple viral infections. We present a case of a young child who developed this condition with classical clinical and radiological findings consistent with ANEC, secondary to swine flu (H1N1). He needed ventilatory support and had profound motor and intellectual deficit on discharge. We report this case with aim of raising awareness about this fatal complication of swine flu which has become a global health care issue these days