2,212 research outputs found
Photoelectro-chemical properties of anilino squaraine derivatives in LB films
No full textPhotocurrent generation from Langmuir-Blodgett (LB) overlays on indium tin oxide (ITO) electrodes, where the active components are 2,4-bis[4-(dibutylamino)-2-hydroxyphenyl]squaraine (1) and the unsubstituted analogue, 2,4-bis[4-(dibutylamino)phenyl]squaraine (2), have been investigated. Dye 1 shows improved behaviour compared with the latter and differences in performance are attributed to a modified aggregate structure, this being indicated by variations in the LB film spectra. The photocurrent generation is enhanced by the presence of electron accepters, e.g. N,N'-dimethyl-4,4'-bipyridinium diiodide (MV2+), but quenched by electron donors, e.g. hydroquinone (HQ). The concentration dependence is reported
Open Educational Resources
No full textPresentation for 2018 University of Pittsburgh Faculty Senate Plenary, "Teaching Today, for Tomorrow
The discourse deictics ^ and <-- in a World of Warcraft community
No full textIn the written English variety used in a community of World of Warcraft players, two iconic lexical items created from symbols have undergone semantic change. The words analyzed are ^ and <--, which have shifted from iconic deictic items used for discourse reference to non-iconic epistemic meanings. ^ shifted from a discourse deictic to an affirmative of a previous utterance, and <-- shifted to a self-identifying meaning similar to a pronoun. The existence and evolution of these lexical items are related to the medium in which they were created, as their meanings are associated with a visual-spatial environment created by textual chat in the virtual world. The different meanings of ^ and <-- currently exist in polysemy in the community, and the continuum of meanings are documented using data from natural language use spanning three years. A statistical analysis is performed on the data, and a diachronic change in meaning is found; furthermore, the observed change follows the path of semantic shift processes previously documented in spoken language. © 2012 Elsevier Ltd
Comments on author citations for nomenclatural novelties published in volume 15 of the Flora Reipublicae Popularis Sinicae (FRPS)
No full textAltmetrics and the Scholarly Legacy
No full textWhen using altmetrics to investigate the impact of a scholar's work, researchers and librarians are typically cautioned that altmetrics will be less useful for older works of scholarship. This is because it is difficult to collect social media and other attention retroactively, and the numbers will be lower if the work was published before social media marketing and promotion were widely accepted in a field. In this poster, we show that altmetrics can provide useful information about older works in the form of documenting renewed attention to past scholarship as part of a scholar's legacy. Using the PlumX profile of the late Dr. Thomas E. Starzl, often referred to as "the father of modern transplantation", we describe two cases where altmetrics provided information about renewed interest in his works: a controversy about race and genetics, and posthumous remembrances by colleagues of his contributions to a field
Library Publishing Beyond the Campus
No full textUniversity Libraries are increasingly engaging in publishing many types of works, including journals, monographs, and textbooks. This activity brings a service and platform to the campus, and is inspired by the Open Access movement and libraries’ work to participate in the movement and position themselves increasingly as creators and producers of knowledge. Libraries leverage in-house expertise on content production, dissemination and preservation to enhance their publishing programs (Lippincott, 2017). A growing subset of library publishers are offering their publishing services to scholars and organizations outside of their individual campuses. This positions these library publishers as players in the larger publishing world. The two examples presented here demonstrate two different programs that approach this broader engagement with the scholarly community. Half of the open access journals published by University of Pittsburgh Libraries are edited by scholars from beyond the Pitt community. University of Minnesota Libraries Publishing recently updated its business plan in order to publish the works of scholarly societies. These external partnerships represent not just an expressed need in the community, but a strategic plan to build both the publishing program and the role of library publishers in general as players in the Open Access movement. Both institutions have found partnerships with off-campus organizations to be mutually rewarding. Library publishing programs are able to establish cost recovery models and scholarly associations are able to publish in the open access environment with relatively low costs. Journals also report that having their journal published by a university organization is an important part of the relationship. Having their publishing costs going to a university is a way for the costs of scholarship to be put back into the academic community. Recently, growing concern about for-profit publishing and platforms in the Open Access movement has resulted in a proliferation of models, including a push by organizations such as the Library Publishing Coalition (Schlosser, 2017) and the Association of Research Libraries (Ruttenberg, 2017) to consider academic ownership of publishing models. University library publishers, while likely not reaching the size and scope of the publishing houses and university presses, provide a complementary model that addresses scholars interest in university ownership and affiliation while expanding their organizations’ connections to the world
Open Educational Resources
No full textThis is a presentation to the Large Enrollment Faculty Learning Community at the Center for Teaching and Learning at the University of Pittsburgh
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