266,301 research outputs found
WeChat and the Chinese diaspora
No full textChinese. diaspora. Introduction. Wanning Sun & Haiqing Yu DOI: 10.4324/ 9781003154754-1 Preamble 1 A few months prior to his departure from the White House, in early August 2020, President Trump, citing national security concerns, ..
Adaptive H∞ sliding mode control of uncertain neutral-type stochastic systems based on state observer
No full textThis paper is focused on the problem of adaptive sliding mode control design for uncertain neutral-type stochastic systems under a prescribed H∞ performance. A simplified state observer is put forward to estimate the unknown state variables, which could be properly incorporated for establishing a new linear-type switching surface and the associated adaptive variable structure controller. By virtue of the adaptive control design, unknown matched perturbation and potential uncertainties can be counteracted, and the system trajectories are guaranteed to reach the predefined switching surface within finite moment in almost surely sense, and performance analysis of the closed-loop dynamics during the sliding surface is carried out with a specified H∞ performance. At last, two illustrative examples through computer simulations are provided to verify the effectiveness and applicability of the proposed scheme
Computation of delays in acyclical distributed decisionmaking organizations
No full text"August 1985."Bibliography: p. 20."Office of Naval Research ... Contract N00014-83-K-0185 (NR 247-349)" "Office of Naval Research ... Contract N00014-84-K-0519 (NR 649-003)"Victoria Yu-yu Jin, Alexander H. Levis
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
Marine algal flora of Pengchia Yu and its special place in the marine phytogeography of Taiwan
No full textA total of 52 taxa of marine benthic algae is reported from Pengchia Yu, a remote islet located off northeastern Taiwan. Two taxa represent new records for the marine flora of Taiwan, three taxa show their range extension. This islet acts as a tropical refugium in a region that is widely known to have cold water floristic affinities. The effects of the sea surface-water temperature and current on the distribution of algae are also discussed.TR: CS9510874Source type: Electronic(1
Ascoschoengastia montana Yu, Yang and Chen 1980
No full textAscoschoengastia montana Yu, Yang and Chen, 1980: PAL Ascoschoengastia (Laurentella) montana Yu, Yang and Chen, 1980 Ascoschoengastia montana, Stekonikov 2021Published as part of Nielsen, David H., Robbins, Richard G. & Rueda, Leopoldo M., 2021, Annotated world checklist of the Trombiculidae and Leeuwenhoekiidae (1758 - 2021) (Acari: Trombiculoidea), with notes on nomenclature, taxonomy, and distribution, pp. 1-243 in Zootaxa 4967 (1) on page 44, DOI: 10.11646/zootaxa.4967.1.1, http://zenodo.org/record/474551
Ascoschoengastia yunnanensis Yu, Yang and Chen 1980
No full textAscoschoengastia yunnanensis Yu, Yang and Chen, 1980: PAL Ascoschoengastia (Laurentella) yunnanensis Yu, Yang and Chen, 1980Published as part of Nielsen, David H., Robbins, Richard G. & Rueda, Leopoldo M., 2021, Annotated world checklist of the Trombiculidae and Leeuwenhoekiidae (1758 - 2021) (Acari: Trombiculoidea), with notes on nomenclature, taxonomy, and distribution, pp. 1-243 in Zootaxa 4967 (1) on page 45, DOI: 10.11646/zootaxa.4967.1.1, http://zenodo.org/record/474551
Leptotrombidium (Leptotrombidium) deplanoscutum Yu and Zi 1981
No full textLeptotrombidium (Leptotrombidium) deplanoscutum Yu and Zi, 1981: PAL [In: Yu et al. 1981] Leptotrombidium deplanoscutum, Stekolnikov 2013 [5 group]Published as part of Nielsen, David H., Robbins, Richard G. & Rueda, Leopoldo M., 2021, Annotated world checklist of the Trombiculidae and Leeuwenhoekiidae (1758 - 2021) (Acari: Trombiculoidea), with notes on nomenclature, taxonomy, and distribution, pp. 1-243 in Zootaxa 4967 (1) on page 128, DOI: 10.11646/zootaxa.4967.1.1, http://zenodo.org/record/474551
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
Polymer multimode waveguide optical and electronic PCB manufacturing
No full textThe paper describes the research in the £1.3 million IeMRC Integrated Optical and Electronic Interconnect PCB Manufacturing (OPCB) Flagship Project in which 8 companies and 3 universities carry out collaborative research and which was formed and is technically led by the author. The consortium’s research is aimed at investigating a range of fabrication techniques, some established and some novel, for fabricating polymer multimode waveguides from several polymers, some formulations of which are being developed within the project. The challenge is to develop low cost waveguide manufacturing techniques compatible with commercial PCB manufacturing and to reduce their alignment cost. The project aims to take the first steps in making this hybrid optical waveguide and electrical copper track printed circuit board disruptive technology widely available by establishing and incorporating waveguide design rules into commercial PCB layout software and transferring the technology for fabricating such boards to a commercial PCB manufacturer. To focus the research the project is designing an optical waveguide backplane to tight realistic constraints, using commercial layout software with the new optical design rules, for a demonstrator into which 4 daughter cards are plugged, each carrying an aggregate of 80 Gb/s data so that each waveguide carries 10 Gb/s
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