1,354,569 research outputs found
Asymptotic properties of mixture-of-experts models
No full textInternational audienceThe statistical properties of the likelihood ratio test statistic (LRTS) for mixture-of-expert models are addressed in this paper. This question is essential when estimating the number of experts in the model. Our purpose is to extend the existing results for mixtures (Liu and Shao, 2003) and mixtures of multilayer perceptrons (Olteanu and Rynkiewicz, 2008). In this paper we study a simple example which embodies all the difficulties arising in such models. We find that in some cases the LRTS diverges but, with additional assumptions, the behavior of such models can be totally explicated
Sustainable Business and Design Conference: 2022 Pathways to Impact: The Promise of Bio-Based Fibers
No full textFIT’s 16th annual Sustainable Business and Design Conference: Pathways to Impact centers on four core themes that highlight the intersectionality of sustainable practices. Over the course of two intensive days, attendees will be immersed in keynotes, talks, and panel discussions providing pathways to Social Justice x Social Responsibility, Environment x Materials, Consumption x Waste, and Design x Business. The speakers are trailblazers in numerous facets of sustainability and emphasize the FIT community’s commitment to best practices in all its operations—including student projects, faculty and staff initiatives, and campus facilities.The Promise of Bio-Based FibersPanel: Aleksandra Gosiewski, Co-Founder & COO, AlgiKnit, Chui-Lian Lee, CEO and Cofounder, Werewool. Moderator: Dr. Evelyn Rynkiewicz, Assistant Professor, Ecology, FIT.As the cofounder and COO of AlgiKnit, Aleksandra Gosiewski’s interests and goals have been heavily influenced by sustainability. With a mission to understand the Earth’s natural resources, she explores the importance of utilizing raw materials in the creation of textiles and garments. Having graduated from the Fashion Institute of Technology with a bachelor's degree in Fashion Design and a minor in economics, she harnesses the creativity of design thinking with steadfast attention to detail in business operations and practicality. Aleksandra’s core ethos is derived from a childhood spent outdoors and an understanding of the importance of a symbiotic relationship with nature.Chui-Lian Lee is the CEO and cofounder of Werewool, a biotechnology company developing biodegradable textile fibers with DNA-programmed color and performance properties. Chui holds a BS in Textile Development and Marketing from the Fashion Institute of Technology. Her diverse experience at Global Brands Group, Victor Textiles, Vartest Laboratories, Atlas Textiles, National Science Foundation ICorp Program, and MIT The Engine: Blueprint Program informs her understanding of the textile supply chain and biofabrication’s potential to achieve fashion industry circularity and climate goals. Chui-Lian’s awards include the 2022 H&M Conservation X Labs Microfiber Innovation Challenge Prize and the 2020 Foundation Global Change Award.Dr. Evelyn Rynkiewicz Assistant Professor, Ecology, Fashion Institute of Technology. A disease ecologist, Evie’s research investigates co-infection in wild mice, focusing on how parasites and pathogens interact with each other and with the host immune system. She teaches classes in ecology and biology, with her overall goals being to increase science literacy among non-science majors and to give students the confidence to bring ideas of the scientific process and understanding of the natural world into how they think about their careers. She collaborates with scientists, designers, and artists to develop innovative tools, labs, and activities in the classroom and is the FIT faculty advisor for the Biodesign Challenge program, advising students in developing innovative projects combining science and design to solve current and future problems in sustainability
Responsibility as a social capital phenomenon in the eyes of young people. International perspective
No full textDepartment of Psychology of Development and Education
Social Science Faculty
University of Warmia and Mazury in Olsztyn, ul. Oczapowskiego 2
10-975 Olsztyn, Poland
In this article, we analyse the phenomenon of responsibility and its understanding among young people from Visegrad countries (Poland, Czech Republic, Slovakia, and Hungary). Using the AGA research method, 400 students of the last stages of economic faculties in capital and local universities were examined. The results indicate a personal rather than a social dimension of responsibility. We also found some patterns to depend on the country. Young Poles’ responsibility is more related to the subjective dimension, Hungarians’ to social, Czechs’ to affective, and Slovaks’ to moral one.
Key words: responsibility, young people, social capital.
Jaunimo požiūris į atsakomybę kaip į socialinį kapitalą . Tarptautinė perspektyva
Beata Krzywosz-Rynkiewicz
Santrauka
Šiame straipsnyje analizuojama, kaip jaunimas iš Vyšegrado šalių (Lenkijos, Čekijos, Slovakijos, Vengrijos) supranta atsakomybę. Naudojant AGA metodą buvo ištirta 400 skirtingų universitetų studentų, besimokančių paskutiniuose ekonomikos fakultetų kursuose. Tyrimo rezultatai atskleidė, kad atsakomybė labiau suvokiama asmeniniu, o ne socialiniu lygmeniu. Be to, egzistuoja skirtumai tarp šalių.
Pagrindiniai žodžiai: atsakomybė, jaunimas, socialinis kapitalas
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Estimating the Number of Regimes of Non-linear Autoregressive Models.
No full textInternational audienceAutoregressive regime-switching models are being widely used in modelling financial and economic time series such as business cycles (Hamilton, 1989; Lam, 1990), exchange rates (Engle and Hamilton, 1990), financial panics (Schwert, 1989) or stock prices (Wong and Li, 2000). When the number of regimes is fixed the statistical inference is relatively straightforward and the asymptotic properties of the estimates may be established (Francq and Roussignol, 1998; Krishnamurthy and Rydén, 1998; Douc R., Moulines E. and Rydén T., 2004). However, the problem of selecting the number of regimes is far less obvious and hasn't been completely answered yet. When the number of regimes is unknown, identifiability problems arise and the likelihood ratio test statistic (LRTS hereafter) is no longer convergent to a -distribution. In this paper, we consider models which allow the series to switch between regimes and we propose to study such models without knowing the form of the density of the noise. The problem we address here is how to select the number of components or number of regimes. One possible method to answer this problem is to consider penalized criteria. The consistency of a modified BIC criterion was recently proven in the framework of likelihood criterion for linear switching models (see Oltéanu and Rynkiewicz). We extend these results to mixtures of nonlinear autoregressive models with mean square error criterion and prove the consistency of a penalized estimate for the number of components under some regularity conditions
Franz Grillparzer's Der Arme Spielmann: a search for value and meaning in the life of a true artist
No full textPublished in 1847, Der arme Spielmann is one of only two prose works of Austrian author and dramatist, Franz Grillparzer. It is a novelle of complex professional and psychological material in an early period of German/Austrian Realism which focuses on an unnamed narrator and a poor (arm) street minstrel/musician, the Spielmann/Jakob. My careful examination of Grillparzer’s novelle will show that although the Spielmann appears poor in several senses, he is actually rich, or blessed, in more important senses. He may be contrasted with the narrator, who appears much more successful and sophisticated, but clearly sees the fiddler’s spiritual superiority. Grillparzer projects his concerns about his own life and art into both the narrator, with whom he seems to compare his reality, and the Spielmann, who seems to have what Grillparzer might have wished for himself. He discovers a side of himself from which he feels separated. The Spielmann is poor by worldly standards. Although he has refined speech and a refined look, the Spielmann wears threadbare clothes and plays a cracked violin for handouts on the street. As the reader becomes acquainted with the Spielmann through the curiosity and questions of the narrator, we learn that the Spielmann has almost no material possessions, no family, and lives in a rented room, separated by a chalk line on the floor from two derelict men. In spite of his circumstances, the Spielmann is, in fact, a man content and indeed happy with his life. In the guise of the narrator and the Spielmann, Grillparzer seeks to discover what is truly real and important to him and why he thinks he does not have it. There is an answer to this question in the novelle, though we will never be certain that it is sufficient for Grillparzer.M.A.Includes bibliographical referencesby Daryl A. Ponder-Rynkiewic
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Author, publisher and bookseller : a tripartite synergy in Nigerian book industry
No full textThis work is about the roles of Author, Publisher and Bookseller in Book development in
Nigeria. The paper started by delving into the history of Book Publishing in Nigeria after
which it proceeded by defining who an author, a publisher, and a bookseller is and
expatiated on the indispensable roles of these key actors in Nigerian Book Industry and in
the emerging Information Society. Furthermore, the various constraints to book
development were identified while the paper advised on how the Book Industry can be
further promoted in Nigeria. However, the paper concluded and made recommendations
on how the Book sector can help in enhancing scholarship in the country
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