1,721,439 research outputs found
Generalised Hausdorff measure of sets of Dirichlet non-improvable matrices in higher dimensions
No full textLet ψ: R+→ R+ be a non-increasing function. A pair (A, b) , where A is a real m× n matrix and b∈ Rm, is said to be ψ -Dirichlet improvable, if the system ‖Aq+b-p‖m<ψ(T),‖q‖
Global and local minima of -Brjuno functions
No full textThe main goal of this article is to analyze some peculiar features of the global (and local) minima of -Brjuno functions where Our starting point is the result by Balazard--Martin (2020), who showed that the minimum of is attained at ; analyzing the scaling properties of near we shall deduce that all preimages of under the Gauss map are also local minima for . Next we consider the problem of characterizing global and local minima of for other values of : we show that for the global minimum is again attained at , while for in a neighbourhood of the function attains its minimum at .
The fact that the minimum of is attained when ranges over a whole interval of parameters is non trivial. Indeed, we prove that is lower semicontinuous for all rational but we also exhibit an irrational for which is not lower semicontinuou
Achievements of Waste Indicators of Sustainable Development Goals 6, 7, 11, and 12 in Italy from 2015 to 2020
No full textMany developed countries face an increasing crisis of waste management, especially regarding inadequate disposal capacities and insufficient systems for waste sorting and recovery. These insufficiencies harmfully affect environmental quality, human health, and overall urban life. Waste management is largely linked with disposal, collection, and recycling. Instead of being a critical public utility, solid waste management often goes unnoticed—until it fails. The complete system failure can escalate into a global crisis. Italy presents a critical case to evaluate waste management’s role in achieving Sustainable Development Goals, given the diversity of the country and its adherence to strict EU regulations. The country has taken important steps to adopt the principles of the circular economy, mainly through recycling and waste-to-energy initiatives. The Sustainable Development Goals are also linked to waste management, and there are specific goals with targets and indicators that focus on waste management outcomes. This paper has assessed the national achievement of Italy in waste management concerning the SDGs. SDGs 6, 7, 11, and 12, with a specific focus on the targets impacted by integrated waste management in Italy, are the focus of this paper, and the achievement of waste indicators under SDGs 6, 7, 11, and 12 is analyzed. The paper also assesses the relationship between social, economic, and geographical variables in the achievement of the mentioned SDGs, and also the impacts of the social, economic, and geographical contexts of inhabitants on the achievements of the SDGs. The paper has utilized the national dataset on SDGs and available data on socio-economic and geographic variables. The paper applied descriptive statistics, Pearson’s Correlation, Partial Least Square Regression (PLSR), and Elastic Net Regression, emphasizing the relationship between the waste indicators of SDGs and social, economic, and geographical factors. The paper resulted in a significant association between the outcomes of waste management indicators of SDGs and demographic variables
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
Refusals strategies on facebook among primary school children / Narinder Kaur A/P Bakhtawar Singh
No full textThis study investigates refusal strategies on Facebook among primary school children. Based on a Discourse Completion Test (DCT) which has twelve situations, thirty school-going children aged between 11 and 12 years old were asked to construct refusals for the various situations given. For this study, a group of 30 students were asked to respond to the situations where refusals to requests, refusals to suggestions, refusals to invitations and refusals to offers were made. The study aims to explore the types of refusal strategies frequently used by primary school children and what strategies are most revealed in the response to refusals used in the situations given within different settings such as family, formal and social. The data were analyzed and categorized according to the refusal taxonomy by Beebe, Takahashi and Uliss-Weltz (1990). It is found that these primary school children employed more indirect strategies compared to the direct strategies. The high frequency in the use of indirect strategies demonstrates that the subjects were aware of the fact that the use of indirect strategies lessens the face-threatening effect of the speech act of refusals. In fact the indirect strategies, “statement of alternative” enjoyed the highest frequency in the family settings while the indirect strategies “excuse, reasons and explanation” enjoyed the highest frequency in the formal and social settings. Finally, the possible justifications behind the variations in the productions of refusals are discussed.
Key words: speech act, refusals, family settings, formal setting, social setting
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
Uniform Diophantine Approximation on the Hecke Group H4
No full textDirichlet's uniform approximation theorem is a fundamental result in Diophantine approximation that gives an optimal rate of approximation with a given bound. We study uniform Diophantine approximation properties on the Hecke group . For a given real number , we characterize the sequence of -best approximations of and show that they are convergents of the Rosen continued fraction and the dual Rosen continued fraction of . We give analogous theorems of Dirichlet uniform approximation and the Legendre theorem with optimal constants
Frequency of Post-Operative Wound Contamination in Bakhtawar General Hospital, Jamshoro
No full textBackground: Surgical site wound infection (SSI) imposes a great challenge worldwide. It is the third most commonly reported nosocomial infection. The objective of the study was to assess the frequency of postoperative wound infections in a newly developed health organization.Material and Methods: This cross-sectional study was conducted from June 2017 to May 2018 in Bakhtawar General Hospital, Jamshoro. A total of 364 cases of surgery, from Obstetrics and Gynecology and General Surgery department were included. Surgical interventions involving an incision were assessed. Infection (SSI) rate was noticed and data was analyzed by SPSS version 18.Results: Healthy discharge rate was 97%. The overall surgical site wound infection rate was 3.1%. These infections were high in genitourinary surgeries (9.09%). Among Obstetrics & Gynecology surgeries, maximum number of SSIs were reported in cases of emergency Lower Segment Cesarean Section (LSCS).Conclusions: The overall rate of SSI for different types of surgeries performed at Bakhtawar General Hospital, Jamshoro was only 3.1%. Frequency of SSI was highest in genitourinary surgeries followed by gastrointestinal and obstetrics and gynecology surgeries, respectively.Key words: General Surgery, Genitourinary surgery, Obstetrics & Gynecology surgery, Post-operative wound contaminatio
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