219,905 research outputs found
Lentocerus Dong & Naito 1999
No full text16. Lentocerus Dong & Naito 1999 Current combination. junior synonym of Euceros Gravenhorst 1829, new synonymy (Ichneumonidae: Eucerotinae).Published as part of Broad, Gavin R., 2021, Taxonomic changes in Ichneumonoidea (Hymenoptera), and notes on certain type specimens, pp. 511-541 in Zootaxa 4941 (4) on page 529, DOI: 10.11646/zootaxa.4941.4.3, http://zenodo.org/record/459558
Kara-Dong
No full textKARA-DONG
Map of portions of Chinese Turkistan and Kansu (-)
Kara-Dong (Sheet No. 30) ( -
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
Lentocerus lijiangensis Dong & Naito 1999
No full textLentocerus lijiangensis Dong & Naito 1999 Current combination. junior synonym of Euceros sensibus Uchida 1930, new synonymy (Ichneumonidae: Eucerotinae). Material examined. Lentocerus dentatus Dong & Naito 1999 ♂ holotype, ISAS, China, Yunnan, Lijiang, 2,915 m a.s.l., 15.vi.1996, coll. Dong Dazhi; Lentocerus lijiangensis Dong & Naito 1999 ♂ holotype [published as ♀], ISAS, China, Yunnan, Lijiang, 2,915 m a.s.l., 15.vi.1996, coll. Dong Dazhi. Comments. Dong & Naito (1999) described a striking new genus of Cryptinae (as Gelinae) from China, Yunnan Province, based on two specimens representing two species. Although the authors placed this genus, Lentocerus Dong & Naito 1999, in the Cryptini subtribe Sphecophagina, they were unaware of the genus Euceros Gravenhorst, which comprises one of two genera of the subfamily Eucerotinae (Gauld & Wahl 2002). The strikingly modified antennal flagellum, proposed by Dong & Naito as a unique feature of their new genus, is a notable apomorphy of males of many species of Euceros, which otherwise look rather unremarkable, being stout ichneumonids with a broad first metasomal tergite, superficially resembling Sphecophaga Westwood in general morphology and wing venation, hence the confusion regarding classification of these specimens. A unique feature of Euceros, that is often difficult to see on specimens when the head is not tilted correctly, is the bilobed process on the dorsum of the pronotum. Thanks to Prof. Mao-Ling Sheng, I was able to examine photographs of the holotypes of both Lentocerus dentatus Dong & Naito and L. lijiangensis Dong & Naito and could confirm that these are indeed specimens of Euceros. Both species are synonymised here with described species of Euceros. The extremely modified male antennae (the central flagellomeres with tooth-like expansions on each side) and the colour pattern (mesosoma with several yellow markings and metasoma with pale posterior bands on first to fourth tergites) firmly place Lentocerus dentatus as a junior synonym of Euceros pruinosus. Often relatively common, E. pruinosus has been recorded across the Palaearctic from Britain and Spain in the west to Japan and Russia (Kamchatka) in the East, but this is the first record for China (from Yunnan Province). Lentocerus lijiangensis fits Barron’s (1978) redescription of E. sensibus very well and matches a specimen identified as this species, from Nepal, in NHMUK. Contrary to Dong & Naito (1999) the holotype of Lentocerus lijiangensis is a male, not a female (the tiny ovipositor of eucerotines can easily be mistaken for an aedeagus). The male antennae are highly modified and the colour pattern, especially the conspicuous ferruginous spots apicolaterally on tergites 1–3, is distinctive. The face is mostly yellow, at the paler end of the spectrum of variation as described by Barron (1978). Previously recorded from Japan, Korea, Nepal, Russia and Taiwan, this is the first record of E. sensibus from mainland China (from Yunnan Province).Published as part of Broad, Gavin R., 2021, Taxonomic changes in Ichneumonoidea (Hymenoptera), and notes on certain type specimens, pp. 511-541 in Zootaxa 4941 (4) on pages 529-531, DOI: 10.11646/zootaxa.4941.4.3, http://zenodo.org/record/459558
DEVELOPMENT OF SYNTHETIC SPECIMENS FOR CALIBRATION AND EVALUATION OF M SUB R (RESILIENT MODULUS) EQUIPMENT
No full textLaboratory measurement of the deformational characteristics of subgrade materials can be quite difficult because of the small values of stress and strain typically involved and the need to eliminate equipment compliance. Measurement of resilient modulus (M sub R) of subgrades falls into this category. Therefore, synthetic specimens with known stiffness characteristics would be beneficial in evaluating and calibrating M sub R equipment as well as training personnel. Two-component urethane elastomer resins are shown to make good candidates for calibration specimens. They can be made with a wide range of stiffnesses that vary from soft subgrades to stiff uncemented bases. Urethane can be modeled as a linear, viscoelastic material with stiffness characteristics essentially independent of confining pressure, strain amplitude, and stress history for the type of cyclic loading used in M sub R testing. Urethane stiffness is, however, dependent on loading frequency and temperature. Therefore, values of Youngs modulus used to equate to M sub R have to be selected at the appropriate frequency and temperature
Hamicossus laevis Ying & Dong, 2007, sp. nov.
No full textHamicossus laevis sp. nov. (Fig. 3 A–B) Diagnosis: As for genus. Description: Head oval with a rostrum. Abdomen with at least 8 visible segments. Forewing triangular with distinct CP and nodal line. Sc with several oblique veinlets, fused with stem of R+M at basal, and arising from R+M before R+M separating into R and M, and fusing with R again little after R 1 arising from R. Rs simple. M fourbranched and bifurcating into M 1 + 2 and M 3 + 4 little after point of R 1 arising from R. M 4 sharply flexed after arising from M 3 + 4. Short crossvein rm present between Rs and M 1. Cu divided into CuA and CuP at base. CuA curved, joined with M by crossvein mcua and also connected with M 4 by long horizontal crossvein. CuA branched into CuA 1 and CuA 2. CuP single. Anal area with 1 visible vein. Nodal line traceable as indentation cross Sc+R and Rs to M 1 + 2, along with latter to branching point of M, dividing discal cells into two parts, following stem CuA and CuA 2, terminating at distal end of clavus. 2 nd discal cell nearly rectangle. Hind wing smaller than forewing, costal margin curved posteriorly, forming prominent indentation. Body 21 mm long, 13 mm wide; forewing 36 mm long, 16 mm wide; hind wing 20 mm long, 14 mm wide. Etymology: From the Latin ‘laevis’ = vein smooth, indicating the shape of crossvein m 4 cua. Material: The new species is established based on body with a pair of forewings and a pair of hind wings. Holotype: Body with wings compression, No.: CNUHNN 2006095. Horizon and locality: Jiulongshan Formation, Middle Jurassic, Daohugou Village, Shantou Township, Ningcheng County, Inner Mongolia, China.Published as part of Ying, Wang & Dong, Ren, 2007, Two new genera of fossil palaeontinids from the Middle Jurassic in Daohugou, Inner Mongolia, China (Hemiptera, Palaeontinidae), pp. 41-49 in Zootaxa 1390 on pages 47-48, DOI: 10.5281/zenodo.17523
Single-cell characterization of malignant phenotypes and development trajectories of adrenal neuroblastoma. Rui Dong et al
No full textOriginal materials for figures from the paper "Single-cell characterization of malignant phenotypes and development trajectories of adrenal neuroblastoma" by Rui Dong et al
"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.
Lentocerus dentatus Dong & Naito 1999
No full text<i>Lentocerus dentatus</i> Dong & Naito 1999 <p> <b>Current combination.</b> junior synonym of <i>Euceros pruinosus</i> (Gravenhorst 1829) <b>new synonymy</b> (Ichneumonidae: Eucerotinae).</p>Published as part of <i>Broad, Gavin R., 2021, Taxonomic changes in Ichneumonoidea (Hymenoptera), and notes on certain type specimens, pp. 511-541 in Zootaxa 4941 (4)</i> on page 529, DOI: 10.11646/zootaxa.4941.4.3, <a href="http://zenodo.org/record/4595588">http://zenodo.org/record/4595588</a>
Quadraticossus longicaulis Ying & Dong, 2007, sp. nov.
No full textQuadraticossus longicaulis sp. nov. (Fig. 2 A–B) Diagnosis: Sc with weak branches, terminating on R 1 near the middle of forewing. The stem of M is long and M bifurcated into M 1 + 2 and M 3 + 4 at the same level of Sc fusing with R 1.Crossvein mcua near point of Sc arising from Sc+R 1. Description: Forewing triangular with distinct CP and nodal line. Sc with weak branches, separated from R at base, fused with R at the level of M bifurcation into M 1 + 2 and M 3 + 4, extending at indentation and terminating on R 1. M branched into M 1 + 2 and M 3 + 4 little after point of R bifurcation into R 1 and Rs. M 1 + 2 and M 3 + 4 separated at same level. Crossvein rm near point of M 1 + 2 branching into M 1 and M 2. CuA curved joined with M by a crossvein mcua and also connected with M 4 by long horizontal crossvein. Nodal line traceable as indentation across point of Sc arising from Sc+R 1, along with R 1 for a short distance, then across Rs to M 1 + 2, along with latter to separating point of M, separating discal cells. Forewing with prominent color pattern consisting of hyaline patches on a dark ground. (Fig. 2. A, B). Forewing (preserved part) 40 mm long, 19 mm wide. Etymology: Specific epithet is a combination of Latin prefix longi (long) and caulis (stem), referring to the long stem of forewing vein M. Material: The new species is known from a single forewing. Holotype: A single forewing, with anal area missing, No.: CNUHNN 2006094. Horizon and locality: Jiulongshan Formation, Middle Jurassic, Daohugou Village, Shantou Township, Ningcheng County, Inner Mongolia, China. Remarks: This species is similar to Q. fangi sp. nov, but can be differentiated from the latter in the following features on the forewing: Sc with weak branches, terminating on R 1 near the middle of wing; M bifurcated into M 1 + 2 and M 3 + 4 at the same level of Sc fusing with R 1; crossvein rm near the point of M 1 + 2 branching into M 1 and M 2; m 4 cua is shorter than the latter. This new species is erected based on a single incomplete forewing, but we anticipate discovery of more wellpreserved specimens that will allow us to restudy this species in detail.Published as part of Ying, Wang & Dong, Ren, 2007, Two new genera of fossil palaeontinids from the Middle Jurassic in Daohugou, Inner Mongolia, China (Hemiptera, Palaeontinidae), pp. 41-49 in Zootaxa 1390 on pages 43-46, DOI: 10.5281/zenodo.17523
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