A robust unscented transformation for uncertain moments     

Hugo T.M. Kussaba  João Y. Ishihara  Leonardo R.A.X. Menezes 《Journal of The Franklin Institute》2019,356(6):3797-3810

This paper proposes a robust version of the unscented transform (UT) for one-dimensional random variables. It is assumed that the moments are not exactly known, but are known to lie in intervals. In this scenario, the moment matching equations are reformulated as a system of polynomial equations and inequalities, and it is proposed to use the Chebychev center of the solution set as a robust UT. This method yields a parametrized polynomial optimization problem, which in spite of being NP-Hard, can be relaxed by some algorithms that are proposed in this paper.  相似文献   

MeMo: The Mexican Moment for Publishers     

Hugo?A.?SetzerEmail author 《Publishing Research Quarterly》2015,31(1):80-83

The “Mexican moment” is a term created by the international press, reflecting the importance of the economic reforms recently approved by congress. This article explores the facts and figures of the local publishing industry, especially the science, technical and medical or STM publishing, at a time of the industry’s crossroads in Mexico. Starting with a general background of the country and its economy, there is information on reading habits, the challenges of printed book distribution, the professional book market in Mexico, the increasing importance of e-books and finishing with an insight into the most important book fair in Spanish speaking language.  相似文献   

Child soldiers in the culture wars     

Gerard Guthrie  Richard Tabulawa  Michele Schweisfurth  Padma Sarangapani  Wayne Hugo  Volker Wedekind 《Compare》2015,45(4):635-654

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New methods of physical investigation of tone quality     

Harl MacDonald  O. Hugo Schuck 《Journal of The Franklin Institute》1934,218(5):613-618

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Universities’ attractiveness to students: The Darwinism effect     

Mattia Cattaneo  Hugo Horta  Paolo Malighetti  Michele Meoli  Stefano Paleari 《Higher Education Quarterly》2019,73(1):85-99

Due to significant government cuts to Higher Education funding in Southern European systems, their already underfunded universities were forced to increasingly compete for students as sources of additional revenue. Concurrently, families and students that continued to afford participation in Higher Education became more selective when choosing a university, realising the riskier investment that Higher Education participation had become. Through a competing destinations model and relying on all Italian private and public universities, this study finds that the competition forces characterising universities’ attractiveness over the last decade have changed since the financial crisis of 2008. In a context of lower demand for Higher Education, the competition for students grew and universities in close proximity were better prepared to face the new challenges, leading to the growth of Higher Education clusters.  相似文献   

The association of thinking styles with research agendas among academics in the social sciences     

Joo M. Santos  Hugo Horta  Li‐fang Zhang 《Higher Education Quarterly》2020,74(2):193-210

Research agendas are understudied, despite being key to academic knowledge creation. The literature suggests that the ways that academics determine their research agendas are conditioned by individual, organisational and environmental characteristics. This study explores the cognitive aspects of academics' research agendas in the social sciences by using a theory on thinking styles as an analytical framework. The results suggest that the research agendas of academics in the social sciences are significantly associated with their thinking styles. These findings aid understanding of how academics set their research agendas. This study also represents an important landmark in research on thinking styles, focusing on academic research work as a potential venue for further studies. The findings are relevant for policymakers, research funding agencies, university administrators and academics because they have implications for academic research development processes, outcomes, and for research and academic identity socialisation during doctoral studies.  相似文献   

Does whole body vibration training affect knee kinematics and neuromuscular control in healthy people?     

Borja Sañudo  Adrian Feria  Luis Carrasco  Moisés de Hoyo  Rui Santos  Hugo Gamboa 《Journal of sports sciences》2013,31(14):1537-1544

Abstract

This study aimed to investigate the effect of whole body vibration (WBV) training on the knee kinematics and neuromuscular control after single-legged drop landings. Surface electromyographic (EMG) activity of the rectus femoris and hamstring muscles and knee and ankle accelerometry signals were acquired from 42 healthy volunteers. Participants performed three pre-test landings and after a recovery period of three minutes, they completed one set of six bouts of WBV each of one minute duration (30 Hz – 4 mm), followed by a single-leg drop landing. After the WBV intervention no significant changes were observed in the kinematic outcomes measured, although the time to stabilise the lower-limb was significantly lower after the vibration training (F(8,41) = 6.55; P < 0.01). EMG analysis showed no significant differences in the amplitude of rectus femoris or hamstring muscles after WBV training, however, significant differences in EMG frequency of the rectus femoris were found before (F(8,41) = 7.595; P < 0.01) and after toe-down (F(8,41) = 4.440; P < 0.001). Finally, no significant changes were observed in knee or ankle acceleration after WBV. Results suggest that WBV can help to acutely enhance knee neuromuscular control, which may have clinical significance and help in the design of rehabilitation programmes.  相似文献   

Nutritional intake of elite football referees     

Vitor Hugo Teixeira  Liliana Gonçalves  Tiago Meneses  Pedro Moreira 《Journal of sports sciences》2014,32(13):1279-1285

Abstract

There is a paucity of dietary data in football referees. In this study, 23 elite main and assistant referees (34.4 ± 5.6 years) completed a 7-day dietary record during the competitive season. No nutritional intake differences were observed between main and assistant referees. Referees’ mean daily energy intake (DEI) was 2819 ± 279 kcal. The intake of proteins (1.7 ± 0.2 g · kg^?1), carbohydrates (4.1 ± 0.8 g · kg^?1) and fats (1.4 ± 0.2 g · kg^?1) represented, respectively, 18.4 ± 1.5%, 44.4 ± 4.4% and 34.6 ± 4.1% of the DEI. Carbohydrate intakes before, during and after exercise were 66 ± 42, 7 ± 15 and 120 ± 62 g. Daily carbohydrate, fibre, polyunsaturated fat and water intakes were below recommendations, while fat, saturated fat, cholesterol and sodium intakes were above recommended values. The prevalence of inadequate intake was high for vitamin E (96%), folate (74%), vitamin A (61%), vitamin C (39%), magnesium (26%) and calcium (22%). Carbohydrate intake before, during and after exercise were far from achieving the minimum recommended values. Most referees demonstrated a negligent behaviour of hydration during exercise. Referees would benefit from dietary education in order to optimise performance and health.  相似文献   

Higher education research in Asia: an archipelago,two continents or merely atomization?     

Hugo Horta  Jisun Jung 《Higher Education》2014,68(1):117-134

This study analyzes higher education research in Asia since the 1980s, based on internationally indexed publication data, focusing on research approaches and themes. The analysis is based on scientometrics, science visualization, and social network analysis measures and methods. We find an increase in the number of higher education publications in both specialized and non-specialized higher education journals, although at a much faster rate in the latter. Based on the results of a community algorithm, research themes were grouped into two research approaches in line with theoretical expectations on the organization of higher education research: (1) teaching and learning approach and (2) policy approach. We found these approaches to have an equivalent representation in both specialized and non-specialized journals, although the system policy theme is found to be highly influential of other themes in specialized journals. However, a scholarship schism between the approaches is evident. Further, in the 1980s, the policy approach was dominant in Asia, while in the 2000s there is greater focus on the teaching and learning approach. A further analysis of eminent researchers of higher education in Asia confirmed the schism and indicated a slight cross-fertilization between higher research approaches, but also found evidence of the isolation/atomization of these scholars.  相似文献   

Information Retrieval: Algorithms and Heuristics     

Hugo Zaragoza 《Information Retrieval》2002,5(2-3):271-274

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