189,014 research outputs found
Platyscelis (Platyscelis) bogatshevi Egorov 1989
No full text<i>Platyscelis</i> (<i>Platyscelis</i>) <i>bogatshevi</i> Egorov, 1989 <p>(Figs. 13–14, 46)</p> <p> <i>Platyscelis</i> (<i>Oblongoplatyscelis</i>) <i>bogatshevi</i> Egorov, 1989: 341.</p> <p> <i>Platyscelis</i> (<i>Platyscelis</i>) <i>bogatshevi</i>: Egorov, 2004: 660; 2008: 296; 2009: 67; Ren & Liu, 2009: 1149 (defensive gland).</p> <p> <b>Material.</b> <b>CHINA: Gansu:</b> 1♀ (IZCAS), Wen Xian, 1000 m, 20.VII.1999, Jian Yao leg.; 9♂♂, 8♀♀ (MHBU), Wen Xian, 1000 m, 6.VII.2003, Yi-Bin Ba & Yang Yu leg.; 1♂ (MHBU), Huangtuling, Wen Xian, 2350 m, 9.VII.2003, Yi-Bin Ba & Yang Yu leg.</p> <p> <b>Distribution.</b> China: Gansu (<b>new record</b>), Sichuan (Egorov, 1989).</p>Published as part of <i>Bai, Xing-Long & Ren, Guo-Dong, 2019, Revision of the genus Platyscelis Latreille, 1818 from China (Coleoptera: Tenebrionidae: Platyscelidini), pp. 101-126 in Zootaxa 4609 (1)</i> on page 108, DOI: 10.11646/zootaxa.4609.1.4, <a href="http://zenodo.org/record/3150800">http://zenodo.org/record/3150800</a>
Unknown pages of cardiovascular surgery history in Sakhalin Region (Surgeon Alfred Egorov)
No full textThe article is dedicated to the history of cardiac surgery in the Sakhalin Region, which over a 20-year period of its development has achieved much success and is now mastering open heart surgery, and to Sakhalin Chief Surgeon Alfred Egorov (1926–1996). Doctor A. Egorov was a great healthcare manager and a surgeon, Honorary Physician of Russian Federation, Member of the USSR and Russian Federation Surgical Society, who over a period of 1964–1986 made a major contribution to the development of anesthesia and surgical care in Sakhalin Region, while strengthening the material and technical facilities of regional medical institutions. The emphasis in the article is placed on Doctor A. Egorov’s role in the development of cardiovascular surgery and on the support that Novosibirsk Institute of Circulation Pathology (now Evgeny Meshalkin National Medical Research Center) has given in this process. As early as 1966 he introduced new methods of cardiac diagnostics and performed pioneer heart operations. His invention, a dilator of heart stenosed orifices (valvulotome), came into common use in heart surgery. It was A. Egorov who performed the first open heart surgery (February 1969) in the Far Eastern Region of Russian Federation.Received 21 May 2018. Revised 2 July 2018. Accepted 3 July 2018.Funding: The study did not have sponsorship.Conflict of interest: Author declares no conflict of interest.AcknowledgmentThe author expresses the gratitude to Oleg S. Egorov, Alfred V. Egorov’s grandson for access to the photos from their family archive.</p
Platyscelis (Platyscelis) amdoensis Egorov 1989
No full text<i>Platyscelis</i> (<i>Platyscelis</i>) <i>amdoensis</i> Egorov, 1989 <p>(Figs. 2, 7–8, 41)</p> <p> <i>Platyscelis</i> (<i>Platyscelis</i>) <i>amdoensis</i> Egorov, 1989: 347; 2004: 661; 2008: 296; 2009: 67.</p> <p> <b>Material.</b> <b>CHINA: Gansu:</b> 3♂♂, 2♀♀ (HNHM), N.W.-China, Kansu, Minshan, Gebiet zw. Min u.Tao, VI.- VII.1948 u.49, leg. Pater Eichinger // <i>ballioni</i> Rtt., Dr Z. Kaszab det. // <i>Platyscelis ballioni</i> Reitt., det. L. Egorov 1989 [misidentification]; 1♂, 2♀♀ (MHBU), Wanmao, Jonȇ, 34°50.233′ N, 103°07.579′ E, 3130 m, 5.VIII.2012, Guo-Dong Ren <i>et al.</i> leg.</p> <p> <b>Distribution.</b> China: Gansu (Egorov, 1989).</p> <p> <b>Remarks.</b> This species was described from Amdos highland, Gansu [including Gannan and parts of Tianzhu] with three specimens (2♂♂, 1♀), posterior angles of pronotum rectangular and sharp, median depression on dorsal surface of parameres extended to base in the original description. In this study, eight specimens were examined and their posterior angles rectangular but not sharp (Fig. 2: A), median depression also not extended to base (Figs. 2: I, 7). According to the locality, body size and other diagnostic characters of these specimens are almost same as <i>P. amdoensis</i>, we regarded them as variability of this species.</p>Published as part of <i>Bai, Xing-Long & Ren, Guo-Dong, 2019, Revision of the genus Platyscelis Latreille, 1818 from China (Coleoptera: Tenebrionidae: Platyscelidini), pp. 101-126 in Zootaxa 4609 (1)</i> on page 106, DOI: 10.11646/zootaxa.4609.1.4, <a href="http://zenodo.org/record/3150800">http://zenodo.org/record/3150800</a>
Oodescelis (Planoodescelis) Egorov 2004
No full textSubgenus <i>Planoodescelis</i> Egorov, 2004 <p> <i>Planoodescelis</i> Egorov, 2004: 649. Type species: <i>Oodescelis kansouensis</i> Kaszab, 1940 (by original designation).</p> <p> <b>Supplement of subgeneric diagnosis.</b> The subgenus was established based on a species from Gansu, the diagnostic characters of the subgenus are supplemented below by the material from a new species from Hubei.</p> <p>Prosternal process weakly obtuse apically in lateral view; elytra [flattened or] weakly convex; surface of elytral apex and epipleura dull; surface of epipleura with rather sparse and short setae, without punctures or wrinkles; male abdomen [without or] with setal brush at middle of ventrites 1, 2 and 5; tibiae [straight or] slightly curved.</p>Published as part of <i>Bai, Xing-Long, Li, Xiu-Min & Ren, Guo-Dong, 2019, A review of the genus Oodescelis Motschulsky, 1845 (Coleoptera: Tenebrionidae Platyscelidini) from China, pp. 401-430 in Zootaxa 4656 (3)</i> on page 417, DOI: 10.11646/zootaxa.4656.3.1, <a href="http://zenodo.org/record/3368901">http://zenodo.org/record/3368901</a>
Universities’ efficiency and the socioeconomic characteristics of their environment — Evidence from an empirical analysis
No full textThis paper investigates how the efficiency of universities is affected by the characteristics of the territory in which they operate. The theoretical framework combines two perspectives: (1) the resource dependence theory, suggesting that the location of university can determine the amount of resources available to it; (2) institutional isomorphism, according to which the characteristics of other higher education institutions located in the same area may shape the university production function and the efficiency of its operations. In order to test this framework we use data on Russian universities and a non-parametric conditional order-m efficiency estimator with two categories of contextual variables. The first group includes the social, economic and cultural characteristics of the region where the university is located, while the second deal with the characteristics of other higher education institutions located in the same region. The main contribution of this paper is that it applies efficiency models that incorporate exogenous factors associated with a geographical area in context of higher education. Our findings highlight that the managerial efficiency of universities is strongly associated with the contextual factors of the environment in which they are embedded. Important policy implication of this result is that different public policies in higher education should treat particular universities differently depending on characteristics of context in which they operate
Convergence for Sequences of Functions and an Egorov Type Theorem
No full textFor every ordinal ξ &lt; ω1 we define a new type of convergence for sequences of functions (ξ-uniform pointwise) which is intermediate between uniform and pointwise convergence. Using this type of convergence we obtain an Egorov type theorem for sequences of measurable functions
Critically evaluated termination rate coefficients for free-radical polymerization: Experimental methods
No full textThe knowledge of accurate rate coefficients for individual steps of free-radical polymerization (FRP) is of scientific interest and of application-oriented importance. For a wide variety of homopolymerizations and for many copolymerizations, reliable propagation rate coefficients, k p, are accessible via the IUPAC-recommended method of PLP-SEC (pulsed laser polymerization - size-exclusion chromatography). For termination rate coefficients, kt, the situation is less favorable. Even for very common monomers, no kt benchmark data sets are available. Moreover, instead of having one recommended technique for measuring kt, there are a plethora of such methods. Seventeen of the most prominent approaches for measuring kt are here reviewed, including innovative ones that have emerged over the last decade. The methods have been subdivided into two categories: (i) 'Kinetic methods', in which analysis of the time dependence of concentrations is essential, and (ii) 'MWD methods', in which the analysis of the molecular weight distribution plays the dominant role. The methods are evaluated with respect to their potential for providing routine access to measuring kt as a function of monomer conversion and of free-radical chain length. Moreover, it has been considered whether expensive instrumentation or highly demanding analysis is required for a particular method and whether a method is applicable to many types of monomers. A table summarizes all these evaluations in a readily accessible form. The use of kinetic methods appears to be generally preferable over MWD-based methods. The largest potential is currently seen for methods in which polymerization is induced by a single laser pulse and where the subsequent time evolution of either monomer concentration or free-radical concentration is measured. © 2005 Elsevier Ltd. All rights reserved
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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
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
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