RGtk2: A Graphical User Interface Toolkit for R

Graphical user interfaces (GUIs) are growing in popularity as a complement or alternative to the traditional command line interfaces to R. RGtk2 is an R package for creating GUIs in R. The package provides programmatic access to GTK+ 2.0, an open-source GUI toolkit written in C. To construct a GUI, the R programmer calls RGtk2 functions that map to functions in the underlying GTK+ library. This paper introduces the basic concepts underlying GTK+ and explains how to use RGtk2 to construct GUIs from R. The tutorial is based on simple and pratical programming examples. We also provide more complex examples illustrating the advanced features of the package. The design of the RGtk2 API and the low-level interface from R to GTK+ are discussed at length. We compare RGtk2 to alternative GUI toolkits for R.

COALITIONS IN ENGLISH LOCAL GOVERNMENT: PARTY POLITICAL STRATEGIES IN HUNG COUNCILS

This work takes a multi-method approach to the study of hung English councils. Insights and suppositions from a variety of approaches are utilised, including formal coalition theory and case studies of local authorities. A major aim of the thesis is to analyse questionnaire and case study data which will further improve our understanding of coalitional activity. Although the primary purpose is to inform the student of hung councils, formal coalition theories are also tested. This study provides the first clear evidence that elected political elites lose power to the body of councillors in most hung councils. However, the power of the bureaucratic elite, unlike their political counterparts, appears to remain relatively constant. Contrary to previous proposals, decision making is not characterised by uncertainty and confusion; a learning process takes place in hung councils, and the views of participants become more favourable over time. The influence of the centre party is a recurring theme of the study. Whether payoffs are office or policy, the Liberal Democrats are the primary beneficiary in hung English councils. Their commitment to a more open form of decision making and willingness to bargain with other parties may be contributing reasons for their success, but it is their ideological position in the middle of the two main parties which is offered as the primary reason for the influence they wield. None of the formal theories of coalition formation and duration perform well in predictive terms. Overall, the most accurate prediction of administrative formation would posit a minority administration formed by the largest party group, although majority coalitions are becoming more prevalent. Contrary to expectations, minority administrations are also more durable than coalitions. The large number of minority administrations demonstrates that not all politicians are 'office-driven', and that policy pay-offs are crucial. Policy closeness appears to be a greater influence on duration than either ideological connectedness or coalition size.UNIVERSITY COLLEGE, GALWA

DNA Feature Selection for Discriminating WirelessHART IIoT Devices

This paper summarizes demonstration activity aimed at applying Distinct Native Attribute (DNA) feature selection methods to improve the computational efficiency of time domain fingerprinting methods used to discriminate Wireless Highway Addressable Remote Transducer (WirelessHART) devices being used in Industrial (IIoT) applications. Efficiency is achieved through Dimensional Reduction Analysis (DRA) performed here using both pre-classification analytic (WRS and ReliefF) and post-classification relevance (RndF and GRLVQI) feature selection methods. Comparative assessments are based on statistical fingerprint features extracted from experimentally collected WirelessHART signals, with Multiple Discrimination Analysis, Maximum Likelihood (MDA/ML) estimation showing that pre-classification methods are collectively superior to post-classification methods. Specific DRA results show that an average cross-class percent correct classification differential of 8% ≤ %CD ≤ 1% can be maintained using DRA selected feature sets containing as few as 24 (10%) of the 243 full-dimensional features. Reducing fingerprint dimensionality reduces computational efficiency and improves the potential for operational implementation

RGtk2: A Graphical User Interface Toolkit for R

Graphical user interfaces (GUIs) are growing in popularity as a complement or alternative to the traditional command line interfaces to R. RGtk2 is an R package for creating GUIs in R. The package provides programmatic access to GTK+ 2.0, an open-source GUI toolkit written in C. To construct a GUI, the R programmer calls RGtk2 functions that map to functions in the underlying GTK+ library. This paper introduces the basic concepts underlying GTK+ and explains how to use RGtk2 to construct GUIs from R. The tutorial is based on simple and pratical programming examples. We also provide more complex examples illustrating the advanced features of the package. The design of the RGtk2 API and the low-level interface from R to GTK+ are discussed at length. We compare RGtk2 to alternative GUI toolkits for R

An Optimization Framework for Generalized Relevance Learning Vector Quantization with Application to Z-Wave Device Fingerprinting

Z-Wave is low-power, low-cost Wireless Personal Area Network (WPAN) technology supporting Critical Infrastructure (CI) systems that are interconnected by government-to-internet pathways. Given that Z-wave is a relatively unsecure technology, Radio Frequency Distinct Native Attribute (RF-DNA) Fingerprinting is considered here to augment security by exploiting statistical features from selected signal responses. Related RF-DNA efforts include use of Multiple Discriminant Analysis (MDA) and Generalized Relevance Learning Vector Quantization-Improved (GRLVQI) classifiers, with GRLVQI outperforming MDA using empirically determined parameters. GRLVQI is optimized here for Z-Wave using a full factorial experiment with spreadsheet search and response surface methods. Two optimization measures are developed for assessing Z-Wave discrimination: 1) Relative Accuracy Percentage (RAP) for device classification, and 2) Mean Area Under the Curve (AUCM) for device identity (ID) verification. Primary benefits of the approach include: 1) generalizability to other wireless device technologies, and 2) improvement in GRLVQI device classification and device ID verification performance

Dimensional Reduction Analysis for Constellation-Based DNA Fingerprinting to Improve Industrial IoT Wireless Security

The Industrial Internet of Things (IIoT) market is skyrocketing towards 100 billion deployed devices and cybersecurity remains a top priority. This includes security of ZigBee communication devices that are widely used in industrial control system applications. IIoT device security is addressed using Constellation-Based Distinct Native Attribute (CB-DNA) Fingerprinting to augment conventional bit-level security mechanisms. This work expands upon recent CB-DNA “discovery” activity by identifying reduced dimensional fingerprints that increase the computational efficiency and effectiveness of device discrimination methods. The methods considered include Multiple Discriminant Analysis (MDA) and Random Forest (RndF) classification. RndF deficiencies in classification and post-classification feature selection are highlighted and addressed using a pre-classification feature selection method based on a Wilcoxon Rank Sum (WRS) test. Feature down-selection based on WRS testing proves to very reliable, with reduced feature subsets yielding cross-device discrimination performance consistent with full-dimensional feature sets, while being more computationally efficient

« Cet incomparable Wilde » : étude de trois scénarios de Marcel L’Herbier pour l’adaptation du Portrait de Dorian Gray

Cet article présente des extraits de trois documents inédits provenant des archives de Marcel L’Herbier, trois scénarios que le cinéaste a vraisemblablement écrits pendant les années 1920-1930 en préparant une adaptation filmique du récit d’Oscar Wilde, le Portrait de Dorian Gray. Cet ambitieux « projet auquel [il était] attaché plus qu’à tout autre », n’a jamais vu le jour, malgré les considérables efforts que le cinéaste y a consacrés pendant plus de vingt ans. Cette analyse cherche à mettre en valeur les diffé­rentes stratégies d’adaptation poursuivies par L’Herbier, d’abord en vue d’un film muet, ensuite dans la perspective d’une version parlante. La première stratégie se caractérise par une forte « mélodramatisation » du conte de Wilde, sur le plan tant moral que narratif ; la deuxième est plus fidèle au texte origi­nal en accordant une grande place à la parole brillante et à l’esprit subversif du célèbre « wit » irlandais.This article presents extracts from three unpublished documents found in Marcel L’Herbier’s archives. These three scenarios were seemingly written by the filmmaker during the 1920s and 1930s in preparation for a film adaptation of Oscar Wilde’s The Picture of Dorian Gray. This ambitious “ project to which I am more attached than any other ”, however, was never realised, despite the considerable efforts that L’Herbier devoted to it for more than twenty years. Our analysis seeks to highlight the different strategies adopted by the filmmaker, firstly with a view to a silent movie, and later in relation to a sound film. The first strategy is characterised by a strong tendency towards “melodramatisation” of Wilde’s story, both in moral and narrative terms. The second is more faithful to the original text and allows a greater freedom to Wilde’s brilliant wordplay and subversive wit

« Pour qu’il n’en ressortît jamais ? ». Trois vies de Jean-Luc Godard. Colin MacCabe, Godard, a Portrait of the Artist at 70 | Richard Brody, Everything Is Cinema: The Working Life of Jean-Luc Godard | Jean-Luc Godard, tout est cinéma. Biographie | Antoine de Baecque, Godard : biographie | Antoine de Baecque, Godard : biographie

Depuis 2003, pas moins de trois biographies de Jean-Luc Godard sont parues, l’une au Royaume-Uni, l’autre aux États-Unis, la troisième en France : la première, de Colin MacCabe, Godard, a Portait of the Artist at 70 (2003), est suivie, cinq ans plus tard, par celle de Richard Brody, Everything Is Cinema : The Working Life of Jean-Luc Godard (2008), et, au printemps 2010, celle d’Antoine de Baecque, Godard : biographie, complète ce triptyque. Devant la publication de ces trois biographies dans..

« Pour qu’il n’en ressortît jamais ? ». Trois vies de Jean-Luc Godard. Colin MacCabe, Godard, a Portrait of the Artist at 70 | Richard Brody, Everything Is Cinema: The Working Life of Jean-Luc Godard | Jean-Luc Godard, tout est cinéma. Biographie | Antoine de Baecque, Godard : biographie | Antoine de Baecque, Godard : biographie

Depuis 2003, pas moins de trois biographies de Jean-Luc Godard sont parues, l’une au Royaume-Uni, l’autre aux États-Unis, la troisième en France : la première, de Colin MacCabe, Godard, a Portait of the Artist at 70 (2003), est suivie, cinq ans plus tard, par celle de Richard Brody, Everything Is Cinema : The Working Life of Jean-Luc Godard (2008), et, au printemps 2010, celle d’Antoine de Baecque, Godard : biographie, complète ce triptyque. Devant la publication de ces trois biographies dans..