Corporate Network Centrality Score: Methodologies and Informativeness

2017 ◽  
Vol 31 (3) ◽  
pp. 23-43 ◽  
Author(s):  
Roger S. Debreceny ◽  
Asheq Rahman ◽  
Tawei Wang

ABSTRACT This research proposes a Corporation Network Centrality Score (CNCS) that exploits the social network implicit in Twitter interactions that are relevant to capital markets. The CNCS is the eigenvector network centrality score for interactions about corporations. The CNCS provides a summary numeric metric that captures a wide range of market-relevant information about the corporation it represents. The study asserts that the CNCS will assist the monitoring of corporations by auditors, regulators, and other market participants. The research calculates the CNCS for Standard & Poor's (S&P) 1500 firms and then tests the robustness of the metric by regressing CNCS on a set of variables that are known to convey firm fundamentals information to the capital markets. The study finds that CNCS is strongly associated with firm-led disclosures, market-based firm characteristics, and accounting-based firm fundamentals information. JEL Classifications: M41.

2001 ◽  
Vol 40 (1) ◽  
pp. 71-74
Author(s):  
Attiya Y. Javed

The economic reform process began in India in 1991. However, the reform agenda is still far from its goals as is evident from low per capita income. Thus, this reform effort has not produced the desired outcome of a faster rate of economic and social development in a meaningful way. It is the premise of this volume that to transform the social and economic landscape, the proposed reforms should be broadbased and multi-pronged which take into account incentives for the stockholders in both the private and public sectors. The institutions are the rules that govern economy and include the fundamental legal, political, and social rules that establish the basis for production, exchange, and distribution. The two editors of this volume have received contributions from a number of authors and the wide range of papers are grouped under five main headings: political economy of reforms, reforming public goods delivery, reform issues in agriculture and rural governance, and reforming the district and financial sector.


2020 ◽  
Vol 22 (1) ◽  
pp. 92-97
Author(s):  
KONSTANTIN A. KORSIK ◽  
◽  
ANASTASIYA A. PARFENCHIKOVA ◽  

The article is devoted to the review of current changes in the legislation on notaries related to the development of electronic civil circulation, analysis of existing digital risks and assessment of the role of notaries in combating them. In modern economic realities, a significant expansion of the sphere of competence of the notary is carried out by introducing completely new notarial actions into the scope of the notary’s terms of reference. At the same time, the notary does not just follow the general ‘digital’ trend, but independently makes significant efforts to effectively perform the tasks of the social sphere regulator assigned to it by the state. The creation of the Unified Notary Information System as part of the formation of the technological infrastructure to ensure the security and stability of legal relations in the context of electronic civil circulation takes to a new level the quality of notarial services and the security of legally relevant information. The role of notaries significantly increases in conditions when the use of digital technologies in the economy, public administration, social sphere becomes one of the main vectors of world development, and society and the state inevitably face the flip side of this process – digital risks that jeopardize the safety of participants in civil turnover and their property. In 2020, as part of the implementation of the national program ‘Digital Economy’, it is planned to introduce a number of innovations that will create the basis for a stable and secure ‘digital’ turnover.


2019 ◽  
Vol 95 (3) ◽  
pp. 145-175 ◽  
Author(s):  
Michael J. Dambra ◽  
Matthew Gustafson ◽  
Phillip J. Quinn

ABSTRACT We examine the prevalence and determinants of CEOs' use of tax-advantaged trusts prior to their firm's IPO. Twenty-three percent of CEOs use tax-advantaged pre-IPO trusts, and share transfers into tax-advantaged trusts are positively associated with CEO equity wealth, estate taxes, and dynastic preferences. We project that pre-IPO trust use increases CEOs' dynastic wealth by approximately $830,000, on average. We next examine a simple model's prediction that trust use will be positively related to IPO-period stock price appreciation. We find that trust use is associated with 12 percent higher one-year post-IPO returns, but is not significantly related to the IPO's valuation, filing price revision, or underpricing. This evidence is consistent with CEOs' personal finance decisions prior to the IPO containing value-relevant information that is not immediately incorporated into market prices. JEL Classifications: D14; G12; G32; M21; M41. Data Availability: Data are available from the public sources cited in the text.


2016 ◽  
Vol 91 (6) ◽  
pp. 1725-1750 ◽  
Author(s):  
Marcus P. Kirk ◽  
Stanimir Markov

ABSTRACT Our study introduces analyst/investor days, a new disclosure medium that allows for private interactions with influential market participants. We also highlight interdependencies in the choice and information content of analyst/investor days and conference presentations, a well-researched disclosure medium that similarly allows for private interactions. Analyst/investor days are less frequent, but with longer duration and greater price impact than conference presentations. They are mostly hosted by firms that already have opportunities to interact with investors at conferences, but whose complex and diverse activities make the short duration and rigid format of a conference presentation an imperfect solution to these firms' information problems. Analyst/investor days and conference presentations tend to occur in different quarters, consistent with their competing for the time and attention of senior management. When these two mediums are scheduled in close temporal proximity to each other, analyst/investor days diminish the information content of conference presentations, but not vice versa, consistent with managers' favoring analyst/investor days over conference presentations as a disclosure medium. JEL Classifications: D82; M41; G11; G12; G14. Data Availability: Data are publicly available from the sources identified in the paper.


Author(s):  
Nisha P R

Jumbos and Jumping Devils is an original and pioneering exploration of not only the social history of the subcontinent but also of performance and popular culture. The domain of analysis is entirely novel and opens up a bolder approach of laying a new field of historical enquiry of South Asia. Trawling through an extraordinary set of sources such as colonial and post-colonial records, newspaper reports, unpublished autobiographies, private papers, photographs, and oral interviews, the author brings out a fascinating account of the transnational landscape of physical cultures, human and animal performers, and the circus industry. This book should be of interest to a wide range of readers from history, sociology, anthropology, and cultural studies to analysts of history of performance and sports in the subcontinent.


Minerals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 347
Author(s):  
Carsten Laukamp ◽  
Andrew Rodger ◽  
Monica LeGras ◽  
Heta Lampinen ◽  
Ian C. Lau ◽  
...  

Reflectance spectroscopy allows cost-effective and rapid mineral characterisation, addressing mineral exploration and mining challenges. Shortwave (SWIR), mid (MIR) and thermal (TIR) infrared reflectance spectra are collected in a wide range of environments and scales, with instrumentation ranging from spaceborne, airborne, field and drill core sensors to IR microscopy. However, interpretation of reflectance spectra is, due to the abundance of potential vibrational modes in mineral assemblages, non-trivial and requires a thorough understanding of the potential factors contributing to the reflectance spectra. In order to close the gap between understanding mineral-diagnostic absorption features and efficient interpretation of reflectance spectra, an up-to-date overview of major vibrational modes of rock-forming minerals in the SWIR, MIR and TIR is provided. A series of scripts are proposed that allow the extraction of the relative intensity or wavelength position of single absorption and other mineral-diagnostic features. Binary discrimination diagrams can assist in rapidly evaluating mineral assemblages, and relative abundance and chemical composition of key vector minerals, in hydrothermal ore deposits. The aim of this contribution is to make geologically relevant information more easily extractable from reflectance spectra, enabling the mineral resources and geoscience communities to realise the full potential of hyperspectral sensing technologies.


Forests ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 327 ◽  
Author(s):  
Riccardo Dainelli ◽  
Piero Toscano ◽  
Salvatore Filippo Di Gennaro ◽  
Alessandro Matese

Natural, semi-natural, and planted forests are a key asset worldwide, providing a broad range of positive externalities. For sustainable forest planning and management, remote sensing (RS) platforms are rapidly going mainstream. In a framework where scientific production is growing exponentially, a systematic analysis of unmanned aerial vehicle (UAV)-based forestry research papers is of paramount importance to understand trends, overlaps and gaps. The present review is organized into two parts (Part I and Part II). Part II inspects specific technical issues regarding the application of UAV-RS in forestry, together with the pros and cons of different UAV solutions and activities where additional effort is needed, such as the technology transfer. Part I systematically analyzes and discusses general aspects of applying UAV in natural, semi-natural and artificial forestry ecosystems in the recent peer-reviewed literature (2018–mid-2020). The specific goals are threefold: (i) create a carefully selected bibliographic dataset that other researchers can draw on for their scientific works; (ii) analyze general and recent trends in RS forest monitoring (iii) reveal gaps in the general research framework where an additional activity is needed. Through double-step filtering of research items found in the Web of Science search engine, the study gathers and analyzes a comprehensive dataset (226 articles). Papers have been categorized into six main topics, and the relevant information has been subsequently extracted. The strong points emerging from this study concern the wide range of topics in the forestry sector and in particular the retrieval of tree inventory parameters often through Digital Aerial Photogrammetry (DAP), RGB sensors, and machine learning techniques. Nevertheless, challenges still exist regarding the promotion of UAV-RS in specific parts of the world, mostly in the tropical and equatorial forests. Much additional research is required for the full exploitation of hyperspectral sensors and for planning long-term monitoring.


Author(s):  
Qi D. Van Eikema Hommes

As the content and variety of technology increases in automobiles, the complexity of the system increases as well. Decomposing systems into modules is one of the ways to manage and reduce system complexity. This paper surveys and compares a number of state-of-art components modularity metrics, using 8 sample test systems. The metrics include Whitney Index (WI), Change Cost (CC), Singular value Modularity Index (SMI), Visibility-Dependency (VD) plot, and social network centrality measures (degree, distance, bridging). The investigation reveals that WI and CC form a good pair of metrics that can be used to assess component modularity of a system. The social network centrality metrics are useful in identifying areas of architecture improvements for a system. These metrics were further applied to two actual vehicle embedded software systems. The first system is going through an architecture transformation. The metrics from the old system revealed the need for the improvements. The second system was recently architected, and the metrics values showed the quality of the architecture as well as areas for further improvements.


2013 ◽  
Vol 11 (11) ◽  
pp. 1860-1873 ◽  
Author(s):  
Magdalena Nowacka ◽  
Łukasz Klapiszewski ◽  
Małgorzata Norman ◽  
Teofil Jesionowski

AbstractAdvanced silica/lignin hybrid biomaterials were obtained using hydrated or fumed silicas (Aerosil®200) and Kraft lignin as precursors, which is a cheap and biodegradable natural polymer. To extend the possible range of applications, the silicas were first modified with N-2-(aminoethyl)-3-aminopropyltrimethoxsysilane, and then with Kraft lignin, which had been oxidized with sodium periodate. The SiO2/lignin hybrids and precursors were characterised by means of determination of their physicochemical and dispersive-morphological properties. The effectiveness of silica binding to lignin was verified by FT-IR spectroscopy. The zeta potential value provides relevant information regarding interactions between colloid particles. Measurement of the zeta potential values enabled an indirect assessment of stability for the studied hybrid systems. Determination of zeta potential and density of surface charge also permitted the quantitative analysis of changes in surface charge, and indirectly confirmed the effectiveness of the proposed method for synthesis of SiO2/lignin hybrid materials. A particularly attractive feature for practical use is their stability, especially electrokinetic stability. It is expected that silica/lignin hybrids will find a wide range of applications (polymer fillers, biosorbents, electrochemical sensors), as they combine the unique properties of silica with the specific structural features of lignin. This makes these hybrids biomaterials advanced and multifunctional.


Author(s):  
Barry Sandywell ◽  
David Beer

This article is a series of notes concerned with tracking the social and cultural implications of the digitisation of music. In this piece we explore a number of emerging questions and phenomena with the explicit intention of opening new sets of questions and creating opportunities for further reflections and more detailed empirical case studies. This article, therefore, is not intended as a final word or a definitive statement on the phenomenon of cultural morphing, but rather it represents an attempt to experiment, to develop, and to explore the field of hybridisation and popular cultural change. It is hoped that these exploratory notes will illuminate some of the cultural transformations resulting from the proliferation and appropriation of a wide range of digital music technologies.


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