92 research outputs found

    Finite Element Modeling of Nonstationary Problems of Heat Conduction under Complex Heat Transfer

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    The article presents a numerical simulation of nonstationary heat conduction problems under complex heat transfer, which includes such heat transfer mechanisms as heat conduction, convection, and radiation. The Stefan-Boltzmann law describes the resulting heat transfer by radiation between two bodies, where the heat transfer coefficient is a function of the body surface temperature. An algorithm and software for solving the heat conduction problem using the finite element method were developed, and the influence of external impacts on the temperature field distribution in the vicinity of an insulated circular hole in the center of the body was studied. The temperature fields were investigated for various boundary conditions in the hole of the plate and the corresponding isotherms were given

    ΠŸΠ•Π Π‘ΠŸΠ•ΠšΠ’Π˜Π’Π« Π ΠΠ—Π’Π˜Π’Π˜Π― ИКВ И Π­Π›Π•ΠšΠ’Π ΠžΠΠΠžΠ• ΠŸΠ ΠΠ’Π˜Π’Π•Π›Π¬Π‘Π’Π’Πž Π’ Π­ΠšΠžΠΠžΠœΠ˜ΠšΠ• Π£Π—Π‘Π•ΠšΠ˜Π‘Π’ΠΠΠ

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    This article highlights the role and importanceof information and communication technologies (ICTs) in the economic development ofUzbekistan. The article deals with national characteristics of ICT applications and analyzes the growth rates of the economy of the republic withthe help of ICT, as well as discusses the theory and practice of application of e-government.Analyzes the shortcomings of it modern systemof "electronic government" in Uzbekistan andrecommended ways to overcome them.Π”Π°Π½Π½Π°ΡΡΡ‚Π°Ρ‚ΡŒΡ освСщаСт Ρ€ΠΎΠ»ΡŒ ΠΈ Π·Π½Π°Ρ‡Π΅Π½ΠΈΠ΅ΠΈΠ½Ρ„ΠΎΡ€ΠΌΠ°Ρ†ΠΈΠΎΠ½Π½ΠΎ-ΠΊΠΎΠΌΠΌΡƒΠ½ΠΈΠΊΠ°Ρ†ΠΈΠΎΠ½Π½Ρ‹Ρ…Ρ‚Π΅Ρ…Π½ΠΎΠ»ΠΎΠ³ΠΈΠΈ (ИКВ) Π² Ρ€Π°Π·Π²ΠΈΡ‚ΠΈΠΈ экономики УзбСкистана. Π’ ΡΡ‚Π°Ρ‚ΡŒΠ΅ Ρ€Π°ΡΡΠΌΠ°Ρ‚Ρ€ΠΈΠ²Π°ΡŽΡ‚ΡΡ Π½Π°Ρ†ΠΈΠΎΠ½Π°Π»ΡŒΠ½Ρ‹Π΅ особСнности примСнСния ИКВ ΠΈ анализируСтся ΠΏΠΎΠΊΠ°Π·Π°Ρ‚Π΅Π»ΠΈ Ρ‚Π΅ΠΌΠΏΠΎΠ² роста экономики рСспублики с ΠΏΠΎΠΌΠΎΡ‰ΡŒΡŽ ИКВ, Π° Ρ‚Π°ΠΊΠΆΠ΅ Ρ€Π°ΡΡΠΌΠ°Ρ‚Ρ€ΠΈΠ²Π°ΡŽΡ‚ΡΡ тСорияипрактикапримСнСниясистСмы элСктронного ΠΏΡ€Π°Π²ΠΈΡ‚Π΅Π»ΡŒΡΡ‚Π²ΠΎ. АнализируСтся нСдостатки соврСмСнной систСмы Β«Π­Π»Π΅ΠΊΡ‚Ρ€ΠΎΠ½Π½ΠΎΠ΅ ΠΏΡ€Π°Π²ΠΈΡ‚Π΅Π»ΡŒΡΡ‚Π²ΠΎΒ» Π² УзбСкистанС ΠΈ рСкомСндуСтся ΠΏΡƒΡ‚ΠΈ ΠΈΡ… устранСния

    Strings on Semisymmetric Superspaces

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    Several string backgrounds which arise in the AdS/CFT correspondence are described by integrable sigma-models. Their target space is always a Z(4) supercoset (a semi-symmetric superspace). Here we list all semi-symmetric cosets which have zero beta function and central charge c<=26 at one loop in perturbation theory.Comment: 25 pages, 1 figur

    РадикальноС Π»Π΅Ρ‡Π΅Π½ΠΈΠ΅ эхинококкоза ΠΏΠ΅Ρ‡Π΅Π½ΠΈ. Π‘ΠΎΠ²Ρ€Π΅ΠΌΠ΅Π½Π½ΠΎΠ΅ состояниС ΠΏΡ€ΠΎΠ±Π»Π΅ΠΌΡ‹

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    purpose of this study is to evaluate the results and role of radical operations in the management of hepatic hydatid disease. 317 patients with liver hydatid cysts underwent surgical treatment. Liver resection, total and subtotal pericystectomy were possible in 215 patients (67,8%). There were 115 patients (36,3%) with complicated hepatic hydatid cysts. Residual echinococcosis was indication for operation in 17%. Among all patients 53 (16,7%) presented other anatomic sites of parasite such as lung, peritoneum, kidney, and other viscera. The postoperative complication rate was 25,7% after operations without pericystectomy, 17,6% - after radical operations and 19,8% - after combined operations. The mortality rate was 1,6%. The recurrence rate was 6,7%. Removal of cystic and pericystic tissue and liver resection are the only type of operations for safe and radical treatment of liver hydatid cysts, especially in the cases of complicated and relapsing disease.Π’ послСднСС дСсятилСтиС отмСчаСтся рост заболСваСмости эхинококкозом, ΡƒΠ²Π΅Π»ΠΈΡ‡Π΅Π½ΠΈΠ΅ Π΄ΠΎΠ»ΠΈ ослоТнСнного тСчСния заболСвания. Π‘ Ρ†Π΅Π»ΡŒΡŽ ΠΎΡ†Π΅Π½ΠΊΠΈ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚ΠΎΠ² Ρ€Π°Π΄ΠΈΠΊΠ°Π»ΡŒΠ½Ρ‹Ρ… ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΉ ΠΏΡ€ΠΈ эхинококкозС ΠΏΠ΅Ρ‡Π΅Π½ΠΈ Π² Π˜Π½ΡΡ‚ΠΈΡ‚ΡƒΡ‚Π΅ Ρ…ΠΈΡ€ΡƒΡ€Π³ΠΈΠΈ ΠΈΠΌ. А.Π’. Π’ΠΈΡˆΠ½Π΅Π²ΡΠΊΠΎΠ³ΠΎ ΠΏΡ€ΠΎΠ²Π΅Π΄Π΅Π½ΠΎ хирургичСскоС Π»Π΅Ρ‡Π΅Π½ΠΈΠ΅ 317 Π±ΠΎΠ»ΡŒΠ½Ρ‹Ρ…. Π Π΅Π·Π΅ΠΊΡ†ΠΈΠΈ ΠΏΠ΅Ρ‡Π΅Π½ΠΈ, Ρ‚ΠΎΡ‚Π°Π»ΡŒΠ½Ρ‹Π΅ ΠΈ ΡΡƒΠ±Ρ‚ΠΎΡ‚Π°Π»ΡŒΠ½Ρ‹Π΅ пСрицистэктомии Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½Ρ‹ Ρƒ 215 ΠΏΠ°Ρ†ΠΈΠ΅Π½Ρ‚ΠΎΠ² (67,8%). ΠžΡΠ»ΠΎΠΆΠ½Π΅Π½Π½Ρ‹ΠΉ эхинококкоз ΠΈΠΌΠ΅Π» мСсто Ρƒ 115 Π±ΠΎΠ»ΡŒΠ½Ρ‹Ρ… (36,3%). ΠŸΠΎΠ²Ρ‚ΠΎΡ€Π½Ρ‹Π΅ ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΈ ΠΏΠΎ ΠΏΠΎΠ²ΠΎΠ΄Ρƒ Ρ€Π΅Ρ†ΠΈΠ΄ΠΈΠ²Π½ΠΎΠ³ΠΎ эхинококкоза ΠΏΡ€ΠΎΠ²Π΅Π΄Π΅Π½Ρ‹ 17% Π±ΠΎΠ»ΡŒΠ½Ρ‹Ρ…. Π‘ΠΎΡ‡Π΅Ρ‚Π°Π½Π½Ρ‹ΠΉ эхинококкоз с ΠΏΠΎΡ€Π°ΠΆΠ΅Π½ΠΈΠ΅ΠΌ Π΄Ρ€ΡƒΠ³ΠΈΡ… ΠΎΡ€Π³Π°Π½ΠΎΠ² Π±Ρ€ΡŽΡˆΠ½ΠΎΠΉ полости ΠΈ Π»Π΅Π³ΠΊΠΈΡ… ΠΈΠΌΠ΅Π» мСсто Ρƒ 53 ΠΏΠ°Ρ†ΠΈΠ΅Π½Ρ‚ΠΎΠ² (16,7%). ОслоТнСния со стороны Π±Ρ€ΡŽΡˆΠ½ΠΎΠΉ полости послС ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΉ Π±Π΅Π· удалСния Ρ„ΠΈΠ±Ρ€ΠΎΠ·Π½ΠΎΠΉ капсулы ΠΎΡ‚ΠΌΠ΅Ρ‡Π΅Π½Ρ‹ Ρƒ 25,7% Π±ΠΎΠ»ΡŒΠ½Ρ‹Ρ…, послС Ρ€Π°Π΄ΠΈΠΊΠ°Π»ΡŒΠ½Ρ‹Ρ… ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΉ - Ρƒ 17,6%, послС ΡΡƒΠ±Ρ‚ΠΎΡ‚Π°Π»ΡŒΠ½ΠΎΠΉ пСрицистэктомии ΠΈ ΠΊΠΎΠΌΠ±ΠΈΠ½ΠΈΡ€ΠΎΠ²Π°Π½Π½Ρ‹Ρ… ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΉ - Ρƒ 19,8%. Π›Π΅Ρ‚Π°Π»ΡŒΠ½Ρ‹Π΅ исходы зафиксированы Π² 1,6% случаСв. Π’ ΠΎΡ‚Π΄Π°Π»Π΅Π½Π½ΠΎΠΌ ΠΏΠ΅Ρ€ΠΈΠΎΠ΄Π΅ Ρ€Π΅Π·ΠΈΠ΄ΡƒΠ°Π»ΡŒΠ½Ρ‹Π΅ кисты выявлСны Ρƒ 2,1% ΠΏΠ°Ρ†ΠΈΠ΅Π½Ρ‚ΠΎΠ². Π Π°Π΄ΠΈΠΊΠ°Π»ΡŒΠ½Ρ‹Π΅ ΠΎΠΏΠ΅Ρ€Π°Ρ†ΠΈΠΈ (пСрицистэктомия, рСзСкция ΠΏΠ΅Ρ‡Π΅Π½ΠΈ) ΠΎΡΡ‚Π°ΡŽΡ‚ΡΡ основным ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠΌ хирургичСского лСчСния, достаточно бСзопасным ΠΈ ΠΎΠ±Π΅ΡΠΏΠ΅Ρ‡ΠΈΠ²Π°ΡŽΡ‰ΠΈΠΌ Π½Π°ΠΈΠ±ΠΎΠ»Π΅Π΅ благоприятноС Ρ‚Π΅Ρ‡Π΅Π½ΠΈΠ΅ послСопСрационного ΠΏΠ΅Ρ€ΠΈΠΎΠ΄Π°, Π² Ρ‚ΠΎΠΌ числС Ρƒ Π±ΠΎΠ»ΡŒΠ½Ρ‹Ρ… с ослоТнСнным Ρ‚Π΅Ρ‡Π΅Π½ΠΈΠ΅ΠΌ заболСвания ΠΈ ΠΏΠΎΠ²Ρ‚ΠΎΡ€Π½ΠΎ ΠΎΠΏΠ΅Ρ€ΠΈΡ€ΠΎΠ²Π°Π½Π½Ρ‹Ρ…

    АномальноС ΠΎΡ‚Ρ…ΠΎΠΆΠ΄Π΅Π½ΠΈΠ΅ Π»Π΅Π²ΠΎΠΉ ΠΊΠΎΡ€ΠΎΠ½Π°Ρ€Π½ΠΎΠΉ Π°Ρ€Ρ‚Π΅Ρ€ΠΈΠΈ ΠΎΡ‚ ствола Π»Π΅Π³ΠΎΡ‡Π½ΠΎΠΉ Π°Ρ€Ρ‚Π΅Ρ€ΠΈΠΈ: ΠΎΡ†Π΅Π½ΠΊΠ° Ρ€ΠΎΠ»ΠΈ КВ-Π°Π½Π³ΠΈΠΎΠ³Ρ€Π°Ρ„ΠΈΠΈ сСрдца (клиничСскоС наблюдСниС)

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    Anomalous origin of the left coronary artery (LCA) arising from the pulmonary artery (ALCAPA or a Bland-WhiteGarland Syndrome) is a congenital heart pathology where the left main trunk (LM) originates from the pulmonary artery system (PA). Clinical signs of the defect were studied and described in 1933 by Cardiologists E. Bland, P. White, J. Garland; this anomaly took its name as β€œsyndrome of Bland–White–Garland” (BWGS) from them. Frequency of LCA origin from LM is 0.025–0.05 per 1,000 newborns, 0.22% of all congenital heart defects (CHD) and 0.4–0.7% of critical CHD. Clinical supervision of a patient withΒ BWGS first identified at age of 12 years, is exemplified. This example demonstrates that if CHD is suspected CT angiography of heart shall be made for the earliest and accurate diagnosis and determination of CHD type.АномальноС ΠΎΡ‚Ρ…ΠΎΠΆΠ΄Π΅Π½ΠΈΠ΅ Π»Π΅Π²ΠΎΠΉ ΠΊΠΎΡ€ΠΎΠ½Π°Ρ€Π½ΠΎΠΉ Π°Ρ€Ρ‚Π΅Ρ€ΠΈΠΈ ΠΎΡ‚ Π»Π΅Π³ΠΎΡ‡Π½ΠΎΠΉ Π°Ρ€Ρ‚Π΅Ρ€ΠΈΠΈ (ΠΠžΠ›ΠšΠ, ΠΈΠ»ΠΈ синдром Bland–White– Garland) – вроТдСнная патология сСрдца, ΠΏΡ€ΠΈ ΠΊΠΎΡ‚ΠΎΡ€ΠΎΠΉ ствол Π»Π΅Π²ΠΎΠΉ ΠΊΠΎΡ€ΠΎΠ½Π°Ρ€Π½ΠΎΠΉ Π°Ρ€Ρ‚Π΅Ρ€ΠΈΠΈ (Π›ΠšΠ) Π±Π΅Ρ€Π΅Ρ‚ Π½Π°Ρ‡Π°Π»ΠΎ ΠΎΡ‚ систСмы Π»Π΅Π³ΠΎΡ‡Π½ΠΎΠΉ Π°Ρ€Ρ‚Π΅Ρ€ΠΈΠΈ (ЛА). ΠšΠ»ΠΈΠ½ΠΈΡ‡Π΅ΡΠΊΠΈΠ΅ ΠΏΡ€ΠΈΠ·Π½Π°ΠΊΠΈ ΠΏΠΎΡ€ΠΎΠΊΠ° Π±Ρ‹Π»ΠΈ ΠΈΠ·ΡƒΡ‡Π΅Π½Ρ‹ ΠΈ описаны Π² 1933 Π³. амСриканскими ΠΊΠ°Ρ€Π΄ΠΈΠΎΠ»ΠΎΠ³Π°ΠΌΠΈ E. Bland, P. White, J. Garland, Π² Ρ‡Π΅ΡΡ‚ΡŒ ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Ρ… данная аномалия ΠΏΠΎΠ»ΡƒΡ‡ΠΈΠ»Π° Π½Π°Π·Π²Π°Π½ΠΈΠ΅ β€œΡΠΈΠ½Π΄Ρ€ΠΎΠΌ Бланда–Уайта–Гарланда” (Π‘Π‘Π£Π“). ΠŸΡ€ΠΈ этом частота отхоТдСния Π›ΠšΠ ΠΎΡ‚ ЛА составляСт 0,025–0,05 Π½Π° 1000 Π½ΠΎΠ²ΠΎΡ€ΠΎΠΆΠ΄Π΅Π½Π½Ρ‹Ρ…, 0,22% срСди всСх Π²Ρ€ΠΎΠΆΠ΄Π΅Π½Π½Ρ‹Ρ… ΠΏΠΎΡ€ΠΎΠΊΠΎΠ² сСрдца (Π’ΠŸΠ‘) ΠΈ 0,4–0,7% срСди критичСских Π’ΠŸΠ‘. ΠŸΡ€ΠΈΠ²Π΅Π΄Π΅Π½ΠΎ клиничСскоС наблюдСниС ΠΏΠ°Ρ†ΠΈΠ΅Π½Ρ‚ΠΊΠΈ, Ρƒ ΠΊΠΎΡ‚ΠΎΡ€ΠΎΠΉ Π‘Π‘Π£Π“ Π±Ρ‹Π» Π²ΠΏΠ΅Ρ€Π²Ρ‹Π΅ выявлСн Π² возрастС 12 Π»Π΅Ρ‚. Π”Π°Π½Π½Ρ‹ΠΉ ΠΏΡ€ΠΈΠΌΠ΅Ρ€ дСмонстрируСт, Ρ‡Ρ‚ΠΎ ΠΏΡ€ΠΈ ΠΏΠΎΠ΄ΠΎΠ·Ρ€Π΅Π½ΠΈΠΈ Π½Π° Π½Π°Π»ΠΈΡ‡ΠΈΠ΅ Π’ΠŸΠ‘, для Π½Π°ΠΈΠ±ΠΎΠ»Π΅Π΅ Ρ€Π°Π½Π½Π΅ΠΉ ΠΈ Ρ‚ΠΎΡ‡Π½ΠΎΠΉ диагностики, опрСдСлСния Π²ΠΈΠ΄Π° Π’ΠŸΠ‘ Π½Π΅ΠΎΠ±Ρ…ΠΎΠ΄ΠΈΠΌΠΎ ΠΏΡ€ΠΎΠ²ΠΎΠ΄ΠΈΡ‚ΡŒ КВ-Π°Π½Π³ΠΈΠΎΠ³Ρ€Π°Ρ„ΠΈΡŽ сСрдца

    DEVELOPMENT OF ARTISTIC AND CREATIVE ABILITIES OF FUTURE TEACHERS OF FINE ARTS THROUGH COMPUTER GRAPHICS

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    The article discusses the issues of improving the system of art education with the help of computer systems and their software. The authors recommend techniques for using computer graphics in the process of art education. These methods open up ample opportunities for future teachers of visual arts for creative expression in the creation of graphic animated works and in the preparation of sketches in the classical styles of visual and decorative arts
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