1,358,295 research outputs found
An in-depth understanding of the use of social media in small and medium-sized enterprises
No full textA quoi servent les oiseaux ?
No full textTodorova. A quoi servent les oiseaux ?. In: Communications, 39, 1984. Les avatars d'un conte, sous la direction de Claude Bremond. pp. 46-65
Absorptive Capacity: Valuing a Reconceptualization
No full textZahra and George (2002) suggested a reconceptualization of the absorptive capacity construct in order to reduce ambiguity in empirical studies. A re-reading of the seminal Cohen and Levinthal (1990) article in light of current research on learning and innovation directs our attention to serious ambiguities and omissions in Zahra and George's reconceptualization. We suggest a reintroduction of "recognizing the value," an alternative understanding of "transformation," a clarification of "potential absorptive capacity," an elaboration of the impact of socialization mechanisms, an investigation of the role of "power relationships," and an inclusion of feedback loops in a dynamic model of absorptive capacity
From paper-and-pencil to computer-based assessment: an example of qualitative comparative analysis.
No full textThe challenge of integrating sustainable food systems and spatial planning: strengthening the European research agenda
No full textTwelve years after the Pothukuchi and Kaufmann seminal study, the “food system” has not only ceased to be a “stranger to the planning field” (2000), but it has become the trigger for “one of the most important social movements of the early twenty-first century in the global north” (Morgan, 2009): “food planning”. Indeed, in less than ten-years-time: more than hundred articles on the topic have been published in international planning and architecture scientific journals and magazines; leading planning associations on both sides of the Atlantic, as APA and AESOP, have established specific sustainable food planning focus groups (2005, 2009); and a dedicated World Town Planning Day conference was recently held (2010). What is more, this growing research interest did not evolve in isolation, but instead was coupled by an equally relevant statutory engagement: in fact, during the same period, more than thirty urban and regional food system strategies were released by different local administrations worldwide and, importantly, the first planning-department-led one was pioneered in Europe.
By fully acknowledging the relevance of this dynamic food system planning momentum, the present paper will draw the attention to one of its most challenging and hitherto under-researched nodes: the effective integration of the food prism into the spatial planning rationale and field of practices. In order to address this challenge, three emblematic metropolitan contexts – Amsterdam, New York and Milan – and their recent advancements in this direction will be closely explored. In particular, some insights into the analytic, design and organisational dimensions of the integration will be contingently provided. Last but not least, through the specific case-studies examination, the paper will advance the proposition that for further strengthening the European research agenda a twofold approach is needed. On one side, a greater dialogue across the emerging landscape of European food planning experiences should be sought and encouraged, while, on the other, the identification of valuable knowledge-building opportunities ought to span beyond geographical limits
Problems Book to accompany Mathematics for Economists, Chapter 1: Matrix Algebra
No full textIn highly mathematical courses, it is a truism that students learn by doing, not by reading. Tamara Todorova’s Problems Book to Accompany Mathematics for Economists provides a life line for students seeking an extra leg up in challenging courses. Beginning with college-level mathematics, this comprehensive workbook presents an extensive number of economics focused problem sets, with clear and detailed solutions for each one. By keeping the focus on economic applications, Todorova provides economics students with the mathematical tools they need for academic success.
For years, Professor Todorova has taught microeconomic courses to economists and non-economists, introduced students to new institutional economics as a modern trend in economics, and taught quantitative methods and their application to economic theory, marketing, and advertising
Taxas de decaimento para a energia associada a um sistema semilinear de ondas elásticas em Rn com potencial do tipo dissipativo
Full text linkDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-Graduação em Matemática Pura e Aplicada, Florianópolis, 2013Neste trabalho estuda-se a existência e a unicidade de soluções globais do problema de valor inicial, associado ao sistema semilinear de ondas elásticas em um meio isotrópico, com uma não linearidade do tipo não absorvente. O coeficiente do termo dissipativo é um potencial não constante em Rn e estudam-se os casos quando esse potencial dissipativo é do tipo considerado crítico e não crítico. Taxas de decaimento da energia total também são estudadas para os casos linear e semilinear. A existência e o decaimento para o problema semilinear são obtidos mediante a hipótese de dados iniciais pequenos. Neste trabalho seguimos ideias de Charão-Ikehata [6] e de Ikehata-Todorova-Yordanov [10].Abstract : We study the existence and uniqueness of global solutions of the initial value problem associated to the semi-linear system of elastic waves in an isotropic medium with a nonlinearity of type nonabsorption. The coefficient of the dissipative term is non constant potential in Rn and we study the case where the potential type of damping is considered critical and noncritical. Decay rates of the total energy are also studied for linear and semi-linear system. The global existence and the asymptotic behavior of the semi-linear problem are obtained on the hypothesis of small initial data. In this work we fallow ideas of Charão-Ikehata [6] and Ikehata- Todorova-Yordanov [10]
The political and economic embedding of chronic illness management experiences: a comparison of lay accounts of people with diabetes in United Kingdom and Bulgaria
No full textMethods of protein delivery into mammalian cells for gene therapy and genetic studies
No full textAddress for correspondence:
R. Todorova
Institute of Biophysics
Bulgarian Academy of Sciences
1113 Sofia
Bulgaria
02 979-31-25
e-mail: [email protected], lying on different principles for introducing proteins into mammalian cells were compared in the present study. Some of them rely on non-covalent complex formation (Chariot), osmotic lysisis of pinocytic vesicles (Influx pinocytic cell-loading reagent), electric power (electroporation), lipid-based delivery system (Bioporter), microinjection, small protein transduction domains (PTDs) from viral proteins, bacterial secretion system type III (T3SS). Thus, the delivery by many of the compared methods can give a sufficient number of uniformly loaded cells for different studies including transcription and translation, cell cycle regulation, control of apoptosis, oncogenesis and gene therapy
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
- …
