182,730 research outputs found
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
Performance of Solo Works for Accordion at Shatin Town Hall, Hong Kong on April 9 2019
No full textDermot Dunne presents a programme of six contemporary works for solo accordion - three by Irish composers and three by Hong Kong composers including a new composition by Yip Kimfung who is a PhD candidate at TU Dublin. The works performed are:
D. Gribbin \u27Hells Kells\u27 (1996)
A. ní Riain \u27Skloniste Suite\u27 (2016)
R Clarke \u27The Small Hours\u27 (2014) with visuals by M. Hanlon
Yip Kimfung \u27Dragon\u27 (2019) world premiere
V Wan \u27In the Shades I See\u27 (2019) world premiere
A Au \u27Night Market\u27 (2019) for accordion and piano world premier
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
An investigation into Chinese cybercrime and the underground economy in comparison with the West
No full textWith 420 million Internet users, China has become the world’s largest Internet population. Yet, the Internet penetration rate in China is only 31.6%, which means that the Chinese Internet population has the potential to triple in size in the foreseeable future. With cybercrimes transcending national boundaries, the security of the Internet in China is becoming increasingly significant to the global Internet. As in the West, organised cybercrimes are flourishing in China. With a rapidly expanding Internet population, China is fast becoming a giant hub of cybercrime activities. Therefore, it is in the interest of Western cyber-security experts to increase their attention to China’s cyber-security
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
Tooth erosion : prevention and treatment
No full text"Erosion frequently coexists to varying extents with other tooth wear processes, such as abrasion and attrition, but erosion is often not recognized as being present or is confused withother wear mechanisms." "The aim of this book is to inform ... of the causes and treatment of tooth surface loss from erosion. Chapters are presented as a series of extensively-referenced articles, which include information on the importance of the oral environment and lifestyle behaviors in influencing tooth erosion, and practial information on the preventionof tooth erosion and the restoration of lost tooth substance." --pref.Kevin HK Yip, Roger J Smales, John A Kaidoni
Oral diagnosis and treatment planning: part 5. Preventive and treatment planning for dental caries
No full textThe practice of operative dentistry continues to evolve, to reflect the many changes occurring in society and in dental diseases and conditions. However, the belief that all questionable and early carious lesions should be restored still persists. This belief is largely based upon the concept that the removal of all carious tissue followed by meticulous restoration of the tooth is the treatment of choice for dental caries. Yet restorations are not permanent and do not cure caries, as the causes remain. On the other hand, preventive measures can remove or partially remove the causes, thereby reducing the risks for future caries recurrence at the same site or elsewhere in the mouth.K. Yip & R. Smale
Oral diagnosis and treatment planning: part 2. Dental caries and assessment of risk
No full textDental caries or tooth decay may be defined as a dynamic process causing progressive destruction of hard tooth substance (enamel, dentine and cementum) involving demineralisation of the inorganic portion of the tooth, and dissolution of the organic portion. The onset and progression of carious lesions involves multiple host, micro-organism and substrate factors interacting in a continuous flux. The diagnosis of initial lesions remains a challenge for practitioners and, despite numerous studies, the assessment of future caries risk is still based largely on a patient's past caries experience. If caries is allowed to progress then pulpitis will occur, which may result in subsequent pulpal necrosis and lead to a local periapical and perhaps a systemic infection.K. Yip and R. Smale
Mosses new to Hong Kong (1)
No full textTen moss species - Garkea flexuosa (Griffith) Marg. & Nork., Campylopus laxitextus Lac., Fissidens dubius P. Beauv., Fissidens ceylonensis Dozy & Molk, Fissidens maceratus Mitt., Philonotis thwaitesii Mitt., Isopterygium minutirameum (C. Muell.)Jaeg., Homalia trichomanoides (Hedw.) B.S.G., Pogonatum neesii (C. Muell.) Dozyand Polytrichum formosum Hedw. are reported new to Hong Kong. Among them, five are new to Guangdong Province of China
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