1,722,624 research outputs found
ICT-DCU question answering task at NTCIR-6
Full text linkThis paper describes details of our participation in the
NTCIR-6 Chinese-to-Chinese Question Answering task. We
use the “retrieval plus extraction approach” to get answers
for questions. We first split the documents into short passages, and then retrieve potentially relevant passages for a question, and finally extract named entity answers from the most relevant passages. For question type identification, we use simple heuristic rules which cover most questions. The Lemur toolkit was used with the okapi model for document retrieval. Results of our task submission are given and some preliminary conclusions drawn
LCC-DCU C-C question answering task at NTCIR-5
Full text linkThis paper describes the work for our participation in the NTCIR-5 Chinese to Chinese Question Answering task. Our strategy is based on the “Retrieval plus Extraction” approach. We first retrieve relevant documents, then retrieve short passages from the above documents, and finally extract named entity answers from the most relevant passages. For question type identification, we use simple heuristic rules which can cover most questions. The Lemur toolkit with the OKAPI model is used for document retrieval. Results of our task submission are given and some preliminary conclusions drawn
sj-rar-1-jef-10.1177_15589250221121843 – Research Data for Optimization analysis of combing box for air yarn based on computational fluid dynamics
No full textResearch Data, sj-rar-1-jef-10.1177_15589250221121843 for Optimization analysis of combing box for air yarn based on computational fluid dynamics by HaiFeng Fang, HanLin Sun, Qun Liu, Rui Liu and MingQiang Wang in Journal of Engineered Fibers and Fabrics</p
Trichosanthes sunhangii D. G. Zhang, Z. M. Li, Qun Liu & T. Deng. Left 2021, sp. nov.
No full text<i>Trichosanthes sunhangii</i> D.G.Zhang, Z.M.Li, Qun Liu & T.Deng, <i>sp. nov.</i> <p> <b>Type:</b> CHINA, Hubei Province, Shennongjia Forestry District, 990 m, 28 July 2011, <i>D. G</i> <i>.</i> <i>Zhang et al. 20110728049</i> (holotype KUN [barcode 1498246!]; isotypes KUN [barcode 1498247!], JIU!).</p> <p> <b>Paratypes:</b> CHINA, Hubei Province, Shennonjia Forestry District, 990 m, 8 Oct 2020, <i>Qun Liu Qun gl001</i> (KUN), <i>Qun gl002</i> (KUN).</p> <p>Lianas. Dioecious. Stems grooved, puberulent. Petiole 2.5–6.5 cm long, striate, puberulent; leaf blade adaxially pale green, glabrous; abaxially deep green, with long hairs at first, sparsely puberulent along veins at maturity, (6–)8–11(– 14) × (5–)7–11(–14) cm, papery, usually 3–5-lobed or unlobed; lobes oblong to triangular, margin denticulate, apex acuminate, veins sparsely puberulent. Tendrils 2 or 3, pubescent. Male raceme solitary, 3–5-flowered, or with solitary flowers in axillary pairs; peduncle 10–20 cm; robust, grooved, slightly hairy; bracts sessile, oblanceolate, 1.2–2.5 × 0.5–1 cm, base attenuate, entire, sparsely puberulent, apex distally 3 parted, segments lanceolate; calyx tube narrowly cylindric, dilated at apex, 2.5–3(–3.5) cm, segments lanceolate, 5–8 × 10– 1.5 mm; corolla white, lobes obovate, 20 mm long, 16 mm wide, filiform tassels on both sides, pilose; anthers close together, about 5 mm long and 3 mm in diameter. Pistillate flowers solitary; pedicel 5–8 cm long, puberulent; calyx tube cylindric, 20–25 × 5–8 mm; ovary oblong, 10–20 × 5–10 mm, puberulent; corolla like male flower; ovary oval, green, 2 cm long, 1 cm diameter, style 2 cm long, stigmas 3, yellow. Fruiting peduncle 4–9 cm long; fruit orange-yellow, globose or oblong, 8–11 × 8–11 cm, sparsely pubescent. Seeds, ovate-oblong, compressed, 1–1.5 × 0.8–1 cm, marginate. Fl. Jun–Aug, fr. Aug–Oct.</p> <p> <b>Figure 3.</b> <i>Trichosanthes sunhangii</i> D.G.Zhang, Z.M.Li, Qun Liu & T.Deng. Left: Staminate plant. <b>A</b>, staminate flower dissection; <b>B</b>, habit; <b>C</b>, flower front view; <b>D</b>, bracts; <b>E</b>, bracts of <i>T. kirilowii</i>; <b>F</b>, bracts of <i>T. rosthornii</i>. Right: Pistillate plant: <b>a</b>, pistillate flower, leaf and tendril; <b>b</b>, fruit; <b>c</b>, seed (drawing by Jianing Yang).</p> <p> <b>Figure 4.</b> Maximum parsimony tree of <i>Trichosanthes sunhangii</i> and related species. The MP tree is based on the combined matrix of ITS, matK, rpl20-rps12 sequences. Numbers below branches are MP bootstraps and ML bootstraps, numbers above branches indicate Bayesian posterior probability; the new species is shown in bold.</p> <p> <b>Distribution and habitat:</b> <i>Trichosanthes sunhangii</i> is known only from near Qin Mountain, Yangri County, Xujiazhuang Songluo county and along the Longmen River; roadsides and thickets on limestone foothills at elevations of 900-1000 m.</p> <p> <b>Vernacular name: öt架栝楼</b>, shén nóng jià guâ lóu in Chinese Pinyin.</p> <p> <b>Etymology:</b> The species epithet honors Prof. Hang Sun (1963–), a Chinese Botanist who has conducted research on plant taxonomy, floristics, biogeography and evolutionary biology and who has inspired many people through his work.</p>Published as part of <i>Liu, Qun, Lin, Nan, Zhang, Dai-Gui, Huang, Xian-Han, Wang, Heng-Chang, Yang, Jing- Yuan, Tojibaev, Komiljon, Lv, Zhen-Yu, Deng, Tao & Li, Zhi-Min, 2021, Trichosanthes sunhangii (Cucurbitaceae), a new species from Hubei, China, pp. 287-294 in Phytotaxa 479 (3)</i> on pages 290-292, DOI: 10.11646/phytotaxa.479.3.5, <a href="http://zenodo.org/record/5413934">http://zenodo.org/record/5413934</a>
sj-xlsx-2-onc-10.1177_11795549221116834 – Supplemental material for Concordance of Genomic Profiles in Matched Tissue and Plasma Samples From Chinese Patients With Lung Cancer
No full textSupplemental material, sj-xlsx-2-onc-10.1177_11795549221116834 for Concordance of Genomic Profiles in Matched Tissue and Plasma Samples From Chinese Patients With Lung Cancer by Yueming He, Weifeng Guo, Meng Xu, Junling Huang, Xiange Zhang, Huanzhang Su, Dongxia Hong and Qun Liu in Clinical Medicine Insights: Oncology</p
sj-docx-1-onc-10.1177_11795549221116834 – Supplemental material for Concordance of Genomic Profiles in Matched Tissue and Plasma Samples From Chinese Patients With Lung Cancer
No full textSupplemental material, sj-docx-1-onc-10.1177_11795549221116834 for Concordance of Genomic Profiles in Matched Tissue and Plasma Samples From Chinese Patients With Lung Cancer by Yueming He, Weifeng Guo, Meng Xu, Junling Huang, Xiange Zhang, Huanzhang Su, Dongxia Hong and Qun Liu in Clinical Medicine Insights: Oncology</p
Aplicación de las superficies de alta impedancia al diseño de antenas de hilo de bajo perfil
Full text linkLas superficies de alta impedancia presentan propiedades únicas relacionadas con el control de la propagación de las ondas electromagnéticas, lo que las hace especialmente útiles para la implementación de un gran número de aplicaciones. Dos son los comportamientos destacables de estas superficies. En primer lugar, pueden comportarse como conductores magnéticos perfectos, de forma que las corrientes imagen paralelas a ellas estén en fase con la corriente original y permitiendo así que los elementos radiantes paralelos a las mismas radien de forma eficiente. En segundo lugar, presentan una banda de frecuencia prohibida en la que las ondas electromagnéticas no pueden propagarse. Esto hace que no exista interferencia multicamino a lo largo del plano de masa y que los diagramas de radiación sean por lo general más suaves. Debido a estas características, en contraste con el caso de los planos de masa metálicos convencionales, las superficies de alta impedancia usadas como planos de masa permiten mejorar las prestaciones de ciertas antenas. Es por ello que en este proyecto se ha decidido aplicar este tipo de superficies al diseño de antenas de hilo de bajo perfil, en particular, el dipolo y monopolo horizontales. De dichas antenas se analizará la adaptación y el diagrama de radiación, de forma que sea posible determinar su utilidad en función de la aplicación concreta que se desee implementar. _______________________________________High impedance surfaces have unique properties in controlling the propagation
of electromagnetic waves, which enable them to be implemented in a number of
applications. There are two properties of these surfaces which are of special interest.
First, they can behave as perfect magnetic conductors, so that the parallel image
currents appear in-phase, rather than out-of-phase. This feature enables efficient
radiation for antennas placed parallel and close to the surface. Second, they forbid the
propagation of electromagnetic waves in certain frequency bands, so that there is an
absence of multipath interference and radiation patterns are smoother. Because of these
unusual properties, the high impedance surfaces can function as a unique new type of
ground plane for certain antennas. This is why, in this project, they are going to be
used to design low-profile wire antennas, particularly, the horizontal dipole and
monopole. Return loss and radiation pattern of such antennas will be analyzed in order
to determine how useful they are for implementing a specific application.Ingeniería de Telecomunicació
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
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