Analyzing Social Media Networks with NodeXL offers backgrounds in information studies, computer science, and sociology. This book is divided into three parts: analyzing social media, NodeXL tutorial, ...and social-media network analysis case studies. Part I provides background in the history and concepts of social media and social networks. Also included here is social network analysis, which flows from measuring, to mapping, and modeling collections of connections. The next part focuses on the detailed operation of the free and open-source NodeXL extension of Microsoft Excel, which is used in all exercises throughout this book. In the final part, each chapter presents one form of social media, such as e-mail, Twitter, Facebook, Flickr, and Youtube. In addition, there are descriptions of each system, the nature of networks when people interact, and types of analysis for identifying people, documents, groups, and events. * Walks you through NodeXL, while explaining the theory and development behind each step, providing takeaways that can apply to any SNA * Demonstrates how visual analytics research can be applied to SNA tools for the mass market * Includes case studies from researchers who use NodeXL on popular networks like email, Facebook, Twitter, and wikis * Download companion materials and resources at https://nodexl.codeplex.com/documentation
Mapping Crampton, Jeremy W
2011, 2010, Letnik:
11
eBook
Mapping: A Critical Introduction to Cartography and GIS is an introduction to the critical issues surrounding mapping and Geographic Information Systems (GIS) across a wide range of disciplines for ...the non-specialist reader. * Examines the key influences Geographic Information Systems (GIS) and cartography have on the study of geography and other related disciplines * Represents the first in-depth summary of the "new cartography" that has appeared since the early 1990s * Provides an explanation of what this new critical cartography is, why it is important, and how it is relevant to a broad, interdisciplinary set of readers * Presents theoretical discussion supplemented with real-world case studies * Brings together both a technical understanding of GIS and mapping as well as sensitivity to the importance of theory
The program
speckle-tracking
is described, an open-source software suite for performing wavefront metrology and sample imaging from projection in-line holograms of a sample.
In recent years, X-ray ...speckle-tracking techniques have emerged as viable tools for wavefront metrology and sample imaging applications. These methods are based on the measurement of near-field images. Thanks to their simple experimental setup, high angular sensitivity and compatibility with low-coherence sources, these methods have been actively developed for use with synchrotron and laboratory light sources. Not only do speckle-tracking techniques give the potential for high-resolution imaging, but they also provide rapid and robust characterization of aberrations of X-ray optical elements, focal spot profiles, and sample position and transmission properties. In order to realize these capabilities, software implementations are required that are equally rapid and robust. To address this need, a software suite has been developed for the ptychographic X-ray speckle-tracking technique, an X-ray speckle-based method suitable for highly divergent wavefields. The software suite is written in Python 3, with an OpenCL back end for GPU and multi-CPU core processing. It is accessible as a Python module, through the command line or through a graphical user interface, and is available as source code under Version 3 or later of the GNU General Public License.
This book focuses on a few of the most important clustering algorithms, providing a detailed account of these major models in an information retrieval context. The beginning chapters introduce the ...classic algorithms in detail, while the later chapters describe clustering through divergences and show recent research for more advanced audiences.
A new computer program for analysing ptychographic data combines both high-level simplicity and high-performance computing on large-scale computing clusters. It is available with a royalty-free ...non-exclusive licence for academic and non-commercial purposes.
Over the past decade, ptychography has been proven to be a robust tool for non-destructive high-resolution quantitative electron, X-ray and optical microscopy. It allows for quantitative reconstruction of the specimen’s transmissivity, as well as recovery of the illuminating wavefront. Additionally, various algorithms have been developed to account for systematic errors and improved convergence. With fast ptychographic microscopes and more advanced algorithms, both the complexity of the reconstruction task and the data volume increase significantly.
PtychoShelves
is a software package which combines high-level modularity for easy and fast changes to the data-processing pipeline, and high-performance computing on CPUs and GPUs.
Close Reading with Computers Eve, Martin Paul
Metacritic Journal for Comparative Studies and Theory,
2019, 2019-06-04, 20201201, Letnik:
6, Številka:
2
eBook, Book Review
Recenzirano
Odprti dostop
Rather than working at the usual scales of distant reading, this book shows what happens when we bring techniques from the digital humanities to bear on a single novel for close readings.
This book covers competing risks and multistate models, sometimes summarized as event history analysis. These models generalize the analysis of time to a single event (survival analysis) to analysing ...the timing of distinct terminal events (competing risks) and possible intermediate events (multistate models). Both R and multistate methods are promoted with a focus on nonparametric methods.
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