Multifactor asset pricing models evolved at an accelerated pace in the past few years after publication of Fama and French five-factor model. Despite results from developed markets which arguably make sixth momentum factor redundant, authors showed this study that emerging market, e.g. Warsaw Stock Exchange, (persistence returns) is still a major factor. The data covers period 2010-2018 on mont...

Fast Fourier Transform (FFT) processors employed with pipeline architecture consist of series of Processing Elements (PE) or Butterfly Units (BU). BU or PE of FFT performs multiplication and addition on complex numbers. This paper proposes a single BU to compute radix-2, 8 point FFT in the time domain as well as frequency domain by replacing a series of PEs. This BU comprises of fused floating ...

Feature selection is a pre-processing technique used for eliminating the irrelevant and redundant features which results in enhancing the performance of the classifiers. When a dataset contains more irrelevant and redundant features, it fails to increase the accuracy and also reduces the performance of the classifiers. To avoid them, this paper presents a new hybrid feature selection method usi...

2013 has been a year of relative stability at the Annals. After two years of rapid changes in staff and implementation of our electronic manuscript handling, this year we had time and people to consolidate. Authors in particular will have noticed the hard work of Kim Lewry, our Editorial Assistant, who has tracked down papers that were stuck in the system and has made a substantial contribution...

[This corrects the article DOI: 10.1098/rspa.2008.0100.].

This article summarizes the major categories of ethical violations encountered during submission, review, and publication of scientific articles. We discuss data fabrication and falsification, plagiarism, redundant and duplicate publication, conflict of interest, authorship, animal and human welfare, and reviewer responsibility. In each section, pertinent historical background and citation of r...

Soon after we took over as editors of Sexually Transmitted Infections in 2003 we were alerted by a reader to a potential overlap of content between material published in Sexually Transmitted Infections and in The Journal of Family Planning and Reproductive Health Care. We investigated this and took our concerns to The Committee on Publication Ethics (COPE). We subsequently published a Notice of...