Signal constellations in the hyperbolic plane: A proposal for new communication systems     

Eduardo Brandani da Silva  Marcelo Firer 《Journal of The Franklin Institute》2006,343(1):69-82

Signal constellations in the hyperbolic plane are provided as an alternative to traditional signal constellations in the Euclidean plane, since channels may actually exist for which the latter signal constellations are not as suitable as the former. A hyperbolic gaussian probability density function, based solely on geometrical considerations, is derived to determine the performance of the hyperbolic signal constellations. Benefits result from an approach conceived in terms of reduced signal-to-noise ratio, needed to achieve a prescribed error rate and equivalent optimum receiver complexity.  相似文献   

Paternal Sensitivity and Children’s Cognitive and Socioemotional Outcomes: A Meta-Analytic Review     

Michelle Rodrigues  Nina Sokolovic  Sheri Madigan  Yiqi Luo  Victoria Silva  Shruti Misra  Jennifer Jenkins 《Child development》2021,92(2):554-577

In a series of meta-analyses, paternal sensitivity was associated with children’s (age range: 7 months–9 years) overall cognitive functioning (N = 3,193; k = 23; r = .19), including language skills (k = 9; r = .21), cognitive ability (k = 9; r = .18), and executive function (k = 8; r = .19). Paternal sensitivity was not associated with children’s overall socioemotional functioning (N = 2,924; k = 24; r = −.03) or internalizing problems, but it was associated with children’s emotion regulation (k = 7; r = .22) and externalizing problems (k = 19; r = −.08). In the broad cognitive functioning, executive function, broad socioemotional functioning, and externalizing problems meta-analyses, child age was a significant moderator.  相似文献   

The Impact of Advancement Via Individual Determination on the College Readiness of First-Generation Hispanic Students in an Urban South Texas High School     

Morley  William  Watt  Karen M.  Simonsson  Marie  Silva  Hilda 《The Urban Review》2021,53(1):145-163

The Urban Review - This study examined the phenomenon of college readiness in Hispanic first-generation college students. The purpose of this study was to determine if a relationship exists between...  相似文献   

Support services for higher degree research students: a survey of three Australian universities     

Pujitha Silva  Karen Woodman  Acram Taji  James Travelyan  Shamim Samani  Hema Sharda 《European Journal of Engineering Education》2016,41(5):469-481

A survey was conducted across three Australian universities to identify the types and format of support services available for higher degree research (HDR, or MA and Ph.D.) students. The services were classified with regards to availability, location and accessibility. A comparative tool was developed to help institutions categorise their services in terms of academic, administrative, social and settlement, language and miscellaneous (other) supports. All three universities showed similarities in the type of academic support services offered, while differing in social and settlement and language support services in terms of the location and the level of accessibility of these services. The study also examined the specific support services available for culturally and linguistically diverse (CALD) students. The three universities differed in their emphases in catering to CALD needs, with their allocation of resources reflecting these differences. The organisation of these services within the universities was further assessed to determine possible factors that may influence the effective delivery of these services, by considering HDR and CALD student specific issues. The findings and tools developed by this study may be useful to HDR supervisors and university administrators in identifying key support services to better improve outcomes for the HDR students and universities.  相似文献   

Student satisfaction in higher education: a meta-analytic study     

Fernando de Oliveira Santini  Wagner Junior Ladeira  Claudio Hoffmann Sampaio  Gustavo da Silva Costa 《Journal of Marketing for HIGHER EDUCATION》2017,27(1):1-18

This paper discusses the results of a meta-analysis performed to identify key antecedent and consequent constructs of satisfaction in higher education. We offer an integrated model to achieve a better understanding of satisfaction in the context of higher education. To accomplish this objective, we identified 83 studies that were valid and relevant to the research objective of the current study, generating a total of 469 observations. We identified studies published from 1986 to 2016 and analyzed six antecedent dimensions (perceived value of educational services, resources provided to the student, service quality perception, marketing orientation, identity of the higher education institution, university environment) and one consequent dimension related to satisfaction. The 7 dimensions exhibited a total of 51 relationships. We believe that the originality of the findings clearly contributes to future academic research in higher education.  相似文献   

The application of production functions to the higher education system — some examples from Portuguese universities     

M. Emília Da Silva Freire  J. J. R. Fraústo Da Silva 《Higher Education》1975,4(4):447-460

Production functions were established for the Arts and Law Faculties of Coimbra and Lisbon Universities and for the Higher Institute of Engineering of Lisbon, in which the number of enrolled students was related to the number of professors and assistants. It was possible to find in Coimbra and Lisbon Universities the existence of possibilities of substitution among those factors and economies of scale. In the case of the Higher Institute of Engineering there seems to exist a relation of complementarity between the number of professors and assistants. Also with regard to this Institute, a production function for graduates was estimated which relates them to the expenditures on academic staff and materials. It was found that in this case it was necessary to introduce time as a representative of technological progress, although it was found to be negative. These results are discussed, and the interest and the limitations of the use of production functions for educational management purposes are outlined.  相似文献   

Book reviews     

Mortimer  Kenneth P.  Hall  John  Rust  Chris  Reid  W. A.  Thomas  David  de Silva  Rufus  Durkin  Kevin M.  Hook  Sidney 《Higher Education》1989,18(6):743-760

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Using Wikipedia to enhance student learning: A case study in economics     

Tiago Freire  Jingping Li 《Education and Information Technologies》2016,21(5):1169-1181

Currently, there is widespread interest in how Web 2.0 tools can be used to improve students’ learning experiences. Previous studies have focused either on the advantages of wikis or on concerns over the use of Wikipedia. In this study, we propose to use Wikipedia as a classroom wiki. In doing so, we discuss how students can improve their standard written assignments using Wikipedia instead of a module wiki. Compared to traditional essay assignments, students’ submission of articles to Wikipedia can address many of the problems faced by instructors of traditional assignments, such as students’ poor writing skills, lack of primary source research, and poorly balanced discussions. Our study was based on our experience in teaching an upper-level economics module at the National University of Singapore over two semesters: 121 students who were enrolled in semester 1 submitted a traditional writing assignment, while 124 students enrolled in semester 2 contributed two short entries to Wikipedia. The results showed a large increase in the number of students checking their assignment feedback. Further, students’ writing quality improved noticeably in the Wikipedia assignment, and they were able to put forth more balanced discussions of relevant issues and include a greater number of primary sources. Despite the challenges faced when using Wiki markup language, the students enjoyed the overall experience.  相似文献   

The scientometric world of Keith Pavitt: A tribute to his contributions to research policy and patent analysis     

Martin Meyer  Tiago Santos Pereira  Ove Granstrand 《Research Policy》2004,33(9):1405-1417

Keith Pavitt has made pioneering contributions to the study of science, technology and innovation. This paper aims to examine some of them on the basis of a bibliometric analysis of Keith Pavitt's work and the impact that he has had. First the paper follows how Pavitt's publication profile develops over time. Then we trace his most cited works and explore the sets of references in his papers. Author and journal co-citation maps illustrate the intellectual environment associated with Pavitt and the central role Research Policy played in this context. An analysis of the most frequently cited authors in Research Policy and Scientometrics underlines Keith Pavitt's role as both a shaper of, and a bridge between, science and technology policy and bibliometric analysis.  相似文献   

Computer crime at CEFORMA: a case study     

Gurpreet Dhillon  Leiser Silva  James Backhouse   《International Journal of Information Management》2004,24(6):551-561

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