124,119 research outputs found
Mathematical modeling of large elastic-plastic deformations
No full text© 2014 L. U. Sultanov and R. L. Davydov. The paper is devoted to development and numerical implementation for a method for investigation of stress-strain state of the solids with large elastic-plastic deformations. Calculation algorithm is based on the linearized equation of virtual work, defined to actual state. The arc-length method is used. A spatial discretization is based on the finite element method. The developed algorithm of investigation of large elastic-plastic deformations is tested on the solution of the necking of circular bar
Mathematical modeling of large elastic-plastic deformations
No full text© 2014 L. U. Sultanov and R. L. Davydov. The paper is devoted to development and numerical implementation for a method for investigation of stress-strain state of the solids with large elastic-plastic deformations. Calculation algorithm is based on the linearized equation of virtual work, defined to actual state. The arc-length method is used. A spatial discretization is based on the finite element method. The developed algorithm of investigation of large elastic-plastic deformations is tested on the solution of the necking of circular bar
Mathematical modeling of deformations of hyperelastic solids
No full text© 2014 L.U. Sultanov. The paper is devoted to development and numerical implementation for a method for investigation of stress-strain state of the solids with large elastic deformations. Calculation algorithm is based on the linearized equation of virtual work, defined to actual state. The incremental method is used. A spatial discretization is based on the finite element method. The examples of problems and their solutions are given
Mathematical modeling of deformations of hyperelastic solids
No full text© 2014 L.U. Sultanov. The paper is devoted to development and numerical implementation for a method for investigation of stress-strain state of the solids with large elastic deformations. Calculation algorithm is based on the linearized equation of virtual work, defined to actual state. The incremental method is used. A spatial discretization is based on the finite element method. The examples of problems and their solutions are given
Sultanov T.I. Historiography of the Ethnic and Political History of the Jochid and Chaghataid Uluses
No full textObjective: The article is dedicated to basic stages of ethnic and political development of two heirs of the Mongol Empire – uluses of Jochi (Golden Horde) and Chaghatai (in Central Asia) and their own successors in the 13th–18th cc.
Research materials: The sources mainly used in this study are historical works of contemporary Islamic authors: Jamal Qarshi, Rashid al-Din, Wassaf (turn of the 13th–14th cc.), al-Omari and Hamdallah Qazwini (14th c.), Mirza Muhammad Haydar, Seyfi Çelebi, Amin b. Ahmad Razi (16th c.), Abu-l-Ghazi, Mahmud b. Wali, Hajji Khalifa (17th c.) and others. Also opinions of leading Soviet and post-Soviet as well as foreign specialists on ethnical and political history of Central Asia (V. Barthold, A. Samoilovich, S. Ibragimov, A. Mokeev, B. Karmysheva, Sh. Ando, B.F. Manz, etc.) have been taken into consideration in this study.
Results and novelty of the research: The “reference point” of this article is epoch of Mongol invasions and establishment of the Mongol Empire. During this time earlier political and ethnical realities were crushed. Disintegration of the Empire and creation of independent Chinggisid states initiated new turn of ethno- and politogenesis continued until the fall of these states at the beginning of the 16th c.
Thus, ethnical and political development of the Central Eurasia was a long-term process, and firstly the terms, which are used as ethnonyms today, reflected political and social but not a national characteristics of their holders. Only after disintegration of Chinggisid uluses of imperial type and appearance of new states (Kazakh khanate, Shibanid states on the territory of Chaghataid ulus, Moghulistan and Moghulia-Kashgaria in the Eastern Turkestan) we could talk about formation of ethnical formations, which became a basis for the modern peoples of the Central Asia.
Author pays attention to hypothetical nature of many conclusions of specialist in the ethnical history of Eurasia although they based on careful study of medieval sources. This gives an opportunity to continue researches of this subject
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
Square Dancing with the Stars to Enhance Dynamic Hirschman Linkages?
No full textIn this Presidential Address, the author takes the reader on a reconnaissance of his life and time as a regional scientist. He points out scenery he found scintillating along the way, hoping that some may pick up the banner and chew on a few of the ideas for a while. He suggests a revisit to Albert O. Hirschman’s notion of key sectors and more empirical analysis related to Marcus Berliant’s and Masahisa Fujita’s notion of knowledge creation and transfer.Presidential Address, San Antonio, Texas, March 29, 2014 (53rd Meetings of the Southern Regional Science Association
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
Letter from unknown writer to Jesse L. Boyce
No full textLetter to Jesse L. Boyce from unknown author (possibly Jack) about the investigation into the powder magazine located in the Grand Canyon. Some personal news is included in the letter such as the writer's marriage to the daughter of C.A. Taylor, former Supervisor of Cochise County
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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