We perform a sentiment analysis of all tweets published on the microblogging platform Twitter in second half 2008. use psychometric instrument to extract six mood states (tension, depression, anger, vigor, fatigue, confusion) from aggregated content and compute six-dimensional vector for each day timeline. compare our results record popular events gathered media sources. find that social, political, cultural economic sphere do have significant, immediate highly specific effect various...

We analyze the online response to preprint publication of a cohort 4,606 scientific articles submitted database arXiv.org between October 2010 and May 2011. study three forms responses these preprints: downloads on site, mentions social media site Twitter, early citations in scholarly record. perform two analyses. First, we delay time span article Twitter following submission, understand temporal configuration reactions whether one precedes or follows other. Second, run regression...

Microblogging is a form of online communication by which users broadcast brief text updates, also known as tweets, to the public or selected circle contacts. A variegated mosaic microblogging uses has emerged since launch Twitter in 2006: daily chatter, conversation, information sharing, and news commentary, among others. Regardless their content intended use, tweets often convey pertinent about author's mood status. As such, can be regarded temporally-authentic microscopic instantiations...

New technologies for scientific research are producing a deluge of data that is overwhelming traditional tools capture, analysis, storage, and access. We report on study practices associated with dynamic deployments embedded sensor networks to identify requirements digital libraries. As part continuing management, we interviewed 22 participants in 5 environmental science projects types uses, stages their life cycle, library architecture. found scientists need continuous access from the time...

We analyze data sharing practices of astronomers over the past fifteen years. An analysis URL links embedded in papers published by American Astronomical Society reveals that total number included literature rose dramatically from 1997 until 2005, when it leveled off at around 1500 per year. The also shows availability linked material decays with time: 2011, 44% a decade earlier, 2001, were broken. A rough link types to hosted on astronomers' personal websites become unreachable much faster...

Authorship and citation practices evolve with time differ by academic discipline. As such, indicators of research productivity based on records are naturally subject to historical disciplinary effects. We observe these effects a corpus astronomer career data constructed from database refereed publications. employ simple mechanism measure output using author reference counts available in bibliographic databases develop citation-based indicator productivity. The total impact (tori) quantifies,...

The success of eScience research depends not only upon effective collaboration between scientists and technologists but also the active involvement data archivists. Archivists rarely receive scientific until findings are published, by which time important information about their origins, context, provenance may be lost. Research reported here addresses life cycle from collaborative ecological with embedded networked sensing technologies. A better understanding these processes will enable...

Science and technology research is becoming not only more distributed collaborative, but highly instrumented. Digital libraries provide a means to capture, manage, access the data deluge that results from these enterprises. We have conducted on practices participated in developing management services for Center Embedded Networked Sensing since its founding 2002 as National Foundation Technology Center. Over course of eight years, our digital library strategy has shifted dramatically response...

Many investigations of scientific collaboration are based on statistical analyses large networks constructed from bibliographic repositories. These often rely a wealth data, but very little or no other information about the individuals in network, and thus, fail to illustrate broader social academic landscape which takes place. In this article, we perform an in-depth longitudinal analysis relatively small network (N = 291) record research centerin development application wireless sensor...

Abstract In the process of scientific research, many information objects are generated, all which may remain valuable indefinitely. However, artifacts such as instrument data and associated calibration have little value in isolation; their meaning is derived from relationships to each other. Individual best represented components a life cycle that specific research domain or project. Current cataloging practices do not describe at sufficient level granularity nor they offer globally...

Reactions to textual content posted in an online social net- work show different dynamics depending on the linguistic style and readability of submitted content. Do similar dy- namics exist for responses scientific articles? Our intuition, supported by previous research, suggests that success a article depends its content, rather than style. In this article, we examine corpus sci- entific abstracts three forms associated reactions: ar- ticle downloads, citations, bookmarks. Through class-...

Abstract This article examines the relationship between acquaintanceship and coauthorship patterns in a multi‐disciplinary, multi‐institutional, geographically distributed research center. Two social networks are constructed compared: network of coauthorship, representing how researchers write articles with one another, acquaintanceship, those know each other on personal level, based their responses to an online survey. Statistical analyses topology community structure these point importance...

The WorldWide Telescope computer program, released to researchers and the public as a free resource in 2008 by Microsoft Research, has changed way ever-growing Universe of online astronomical data is viewed understood. WWT program can be thought scriptable, interactive, richly visual browser multi-wavelength Sky we see it from Earth, would travel within it. In its web API format, being used service display professional research data. desktop works concert (thanks SAMP other IVOA standards)...

Large scale surveys of public mood are costly and often impractical to perform. However, the web is awash with material indicative such as blogs, emails, queries. Inexpensive content analysis on extensive corpora can be used assess fluctuations. The work presented here concerned towards future. Using an extension Profile Mood States questionnaire, we have extracted indicators from 10,741 emails submitted in 2006 futureme.org, a service that allows its users send themselves delivered at later...

We analyze the organization, promotion and public perception of "V-day", a political rally that took place on 8 September 2007, to protest against corruption in Italian Parliament. Launched by blogger Beppe Grillo, promoted via word mouth mobilization blogosphere, V-day brought close one million Italians streets single day, but was mostly ignored mainstream media. This article is divided into two parts. In first part, we volume content online articles published both bloggers news sources...

This dissertation is a study of scientific collaboration at the Center for Embedded Networked Sensing (CENS), modern, multi-disciplinary, distributed laboratory involved in sensor network research. By use survey research and analysis, this examines collaborative ecology CENS terms three networks interaction: co-authorship scholarly publications, communication activity on mailing lists, interpersonal acquaintanceship. exposes topology, structure, evolution these relation with disciplinary...

Abstract Scientists and engineers working with embedded networked sensing systems in the environmental sciences are acquiring data at unprecedented rates. Scientific do not emerge from a vacuum. There is considerable contextual information that surrounds process of acquisition critical to interpret analyze data. Current techniques for sharing involve manual effort prepare, describe, transfer this along itself. This paper reports on study UCLA‐based Center Embedded Networked Sensing (CENS),...

We introduce CGA-PoseNet, which uses the 1D-Up approach to Conformal Geometric Algebra (CGA) represent rotations and translations with a single mathematical object, motor, for camera pose regression. do so starting from PoseNet, successfully predicts poses small datasets of RGB frames. State-of-the-art methods, however, require expensive tuning balance orientational translational components pose.This is usually done through complex, ad-hoc loss function be minimized, in some cases also...