Mutual-Excitation of Cryptocurrency Market Returns and Social Media Topics

Cryptocurrencies have recently experienced a new wave of price volatility and interest; activity within social media communities relating to cryptocurrencies has increased significantly. There is currently limited documented knowledge of factors which could indicate future price movements. This paper aims to decipher relationships between cryptocurrency price changes and topic discussion on social media to provide, among other things, an understanding of which topics are indicative of future price movements. To achieve this a well-known dynamic topic modelling approach is applied to social media communication to retrieve information about the temporal occurrence of various topics. A Hawkes model is then applied to find interactions between topics and cryptocurrency prices. The results show particular topics tend to precede certain types of price movements, for example the discussion of 'risk and investment vs trading' being indicative of price falls, the discussion of 'substantial price movements' being indicative of volatility, and the discussion of 'fundamental cryptocurrency value' by technical communities being indicative of price rises. The knowledge of topic relationships gained here could be built into a real-time system, providing trading or alerting signals.Comment: 3rd International Conference on Knowledge Engineering and Applications (ICKEA 2018) - Moscow, Russia (June 25-27 2018

Leadership in Youth Baseball: Awareness of Health & Safety Issues

Society has a great emotional attachment to children and their overall health and safety. Youth sports organizations, directors, coaches, and parents are no different. Participation in sports such as baseball provides great physical opportunities for the youth population in this country. Unfortunately, children can and do get hurt while playing baseball. For some, these injuries can cause a life long physical impairment or possible death. The purpose of this study was to examine Little League Baseball and Babe Ruth Baseball and attempt to determine if these youth baseball leagues are implementing required and recommended standards to ensure the health and safety of all players. The research design was quantitative and included youth baseball directors that were involved with either Little League Baseball or Babe Ruth Baseball Leagues. There were 900 email letters and online surveys sent randomly via the web-based Zoomerang service to youth baseball directors across the country. Of the 900 surveys sent out, 348 surveys were completed. In a breakdown of youth baseball leagues, 215 of the completed surveys were from Little League Baseball directors and 133 of the completed surveys were from Babe Ruth Baseball directors. The online survey was designed to answer four research questions. The research questions focused on the required health and safety standards of the governing leagues, the recommended standards given by the National Athletic Trainers Association (NATA), implementation of the required and recommended standards, and leadership skills involving health and safety in youth baseball. In summary, this study was the first of its kind to examine the health and safety standards in youth baseball on a national level. It was also the first study to use the directors from the two largest youth baseball leagues in the United States. It is suggested that this study contributed to the foundation of research that connects Little League Baseball and Babe Ruth Baseball with regard to the required and recommended health and safety standards that effect their individual organizations. Furthermore, this study confirmed the importance of leadership skills in youth baseball in particular the leadership skills utilized by the directors of youth baseball organizations in Little League Baseball and Babe Ruth Baseball

The Villa of Andrea Doria in Genoa: Architecture, Gardens, and Suburban Setting

This paper reconsiders Andrea Doria\u27s 16th-century villa in Genoa as an architectural and garden monument in relation to its original suburban setting.¹ The villa has thus far been discussed primarily as a decorative monument, with scholars focusing their attention upon the interior fresco and stucco decorations of Perino del Vaga and façade paintings by Perino, Beccafumi, and Pordenone.² However, these paintings have not been understood fully in terms of the architectural, garden, and suburban context of the villa, which serves as the focus of this study

Towards Long-Term Cooperation

In assessing the criteria for deciding when aid should be granted - or refused - to countries where government policies contradict the economic and social prerequisites of development, Dudley Seers is right to stress the importance of two principles, which are too often ignored: 1) Aid for development purposes presupposes the active cooperation of the recipient country. 2) The basic aims of aid should be seen as part of a long term plan

A Classical Stage for the Old Nobility: The Strada Nuova and Sixteenth-Century Genoa

Sixteenth-century Genoa produced a distinctively new type of urban space in the Strada Nuova (or, since 1882, the Via Garibaldi)—the residential palace street or linear piazza—designed to legitimize and enhance the authority of a ruling elite.¹ Laid out in 1550-51 and built between 1558 and 1591, the Strada Nuova (Fig. 1), when taken as a whole, represents two significant themes for the history of Genoa and the interpretation of Renaissance cities. First, this major example of Italian Renaissance architecture and urban planning was conceived, and indeed, functioned as a classical stagelike space for the old nobility, who governed and controlled the tightly restrictive Genoese aristocratic republic of 1528.² This scenographic urban enclave proclaimed the exclusive social, economic, political, and ceremonial position of the old noble families who commissioned ostentatiously rich, decorated palaces along the Strada Nuova\u27s central, monumental perspective axis (Figs. 1, 19, 23). As such, the Strada Nuova became the major public presentation space for the regime these families led

Review: The Architectural Drawings of Antonio da San Gallo the Younger and His Circle. Volume I: Fortifications, Machines, and Festival Architecture

This much awaited first in a most ambitious three-volume catalog of the architectural drawings of the Florentine-Roman architect, Antonio da Sangallo the Younger (1484-1546), comes at a bittersweet moment. After more than eighteen years of promoting high quality publications in the history of architecture, The Architectural History Foundation, under its able director Victoria Newhouse, closed its doors this year, having advanced its scholarly mission. This volume clearly graces this distinguished series of award-winning monographs, and one can only hope that the second volume on Sangallo\u27s churches, in particular his twenty-six year work as architect of St. Peter\u27s, and third on his palaces and antiques studies will be completely expeditiously by MIT Press. This major project was also made possible by Challenge and Access Grants from the National Endowment of the Humanities, which, at this point, we do not even know if it will exist to see the fulfillment of this major international scholarly collaboration

Review: Naomi Miller, Renaissance Bologna: A Study in Architectural Form and Content

Bologna is a uniquely beautiful Italian city with broad, arcaded streets, richly textured brick and sandstone facades, majestic piazzas, public sculpture, high towers, and a cuisine to take time over. However, the previous historiographic emphasis upon Florence, Rome, and Venice has diverted attention from more fully preserved medieval and Renaissance cities such as Bologna, where urbanism—the urban fabric—takes precedence over individual buildings and architects, and where the urban context defines the architectural monument. Bologna is the work of art. And for this reason, one welcomes the fine book on this major, yet understudied, urban center by Naomi Miller, a distinguished architectural historian at Boston University