224 research outputs found

    Xamarin as a tool for mobile development

    Get PDF
    Xamarin as a tool for mobile development was chosen as a topic for the thesis work because of its fast pace of growth. This technology was founded in May 2011 and now counts more 1.25 million developers who have already proven its worth. With help of this technology mobile development process will come to the new qualitative level where crappy software won’t exist anymore. The main goals for this project were to show Xamarin’s power with creating cross-platform mobile application and to prove its portability concept by making research that is proven by created prototype for Android and Windows Phone. As a conclusion it is clearly stated that Xamarin has huge power for code sharing between mobile platforms. The project that has been created during thesis work fully proves main concepts

    Using Corbino disk sample geometry to separate quasiparticle and vortex motion contributions to the mixed state dissipation of YBCO

    Full text link
    A method, using a Corbino disk sample geometry, is described and applied to study of resistive tails of sintered YBCOYBCO. When the transport current passes radially from the rim of the disk sample to its center, the two component potential drop signal is detected below TcT_c, which is due to (i) quasiparticles WqW_q and (ii) vortex-core-motion related contribution WΟ•W_{\phi }. When the contact pairs for WW are placed radially, Wq(r)W_q(r) and WΟ•(r)W_{\phi }(r) are found to follow the markedly distinctive functional dependences, providing a unique possibility to deconvolute the relative strengths of both contributions. The results obtained suggest that the mixed state dissipation of high-TcT_c superconductors is strongly influenced by the quasiparticle excitations.Comment: PDF fil

    Electrical and thermal transport properties in high T_c superconductors : effects of a magnetic field

    Full text link
    Experimental studies of the electric and heat currents in the normal, superconducting and mixed states of high Tc_c superconductors (HTcS) lead to characterization, complementary to data obtained from equilibrium property based techniques. A magnetic field superimposed on the superconducting sample generates {\it magneto-transport phenomena}, from which an excess electrical resistivity, an excess thermoelectric power, the Hall or the Nernst effect. Different behavioral effects allow one to distinguish various dissipation mechanisms, like quasi particle scattering, vortex motion dissipation and superconductivity fluctuations, in particular when the Corbino geometry is used. Moreover bulk measurements of the thermal conductivity and the electrothermal conductivity in a magnetic field give us sure indications of the order parameter symmetry. The location of the mixed state phase transition lines in the technological phase diagram of HTcS are briefly pointed out through precise measurements performed over broad temperature and magnetic field ranges. The results are mainly reviewed with the aim of defining further investigation lines.Comment: 9 pages, no figures; to appear in Physica

    Probing the field-induced variation of the chemical potential in Bi(2)Sr(2)CaCu(2)O(y) via the magneto-thermopower measurements

    Full text link
    Approximating the shape of the measured in Bi2Sr2CaCu2OyBi_2Sr_2CaCu_2O_y magneto-thermopower (TEP) Ξ”S(T,H)\Delta S(T,H) by asymmetric linear triangle of the form Ξ”S(T,H)≃Sp(H)Β±BΒ±(H)(Tcβˆ’T)\Delta S(T,H)\simeq S_p(H)\pm B^{\pm}(H)(T_c-T) with positive Bβˆ’(H)B ^{-}(H) and B+(H)B ^{+}(H) defined below and above TcT_c, we observe that B+(H)≃2Bβˆ’(H)B ^{+}(H)\simeq 2B ^{-}(H). In order to account for this asymmetry, we explicitly introduce the field-dependent chemical potential of holes ΞΌ(H)\mu (H) into the Ginzburg-Landau theory and calculate both an average Ξ”Sav(T,H)\Delta S_{av}(T,H) and fluctuation Ξ”Sfl(T,H)\Delta S_{fl}(T,H) contributions to the total magneto-TEP Ξ”S(T,H)\Delta S(T,H). As a result, we find a rather simple relationship between the field-induced variation of the chemical potential in this material and the above-mentioned magneto-TEP data around TcT_c, viz. Δμ(H)∝Sp(H)\Delta \mu (H)\propto S_p(H).Comment: REVTEX (epsf), 4 pages, 2 PS figures; to be published in JET

    Curvature effects on surface electron states in ballistic nanostructures

    Full text link
    The curvature effect on the electronic states of a deformed cylindrical conducting surface of variable diameter is theoretically investigated. The quantum confinement of electrons normal to the curved surface results in an effective potential energy that affects the electronic structures of the system at low energies. This suggests the possibility that ballistic transport of electrons in low-dimensional nanostructures can be controlled by inducing a local geometric deformation.Comment: 11 pages, 3 figure

    Estimation of the charge carrier localization length from Gaussian fluctuations in the magneto-thermopower of La_{0.6}Y_{0.1}Ca_{0.3}MnO_3

    Full text link
    The magneto-thermoelectric power (TEP) Ξ”S(T,H)\Delta S(T,H) of perovskite type manganise oxide La0.6Y0.1Ca0.3MnO3La_{0.6}Y_{0.1}Ca_{0.3}MnO_3 is found to exhibit a sharp peak at some temperature Tβˆ—=170KT^{*}=170K. By approximating the true shape of the measured magneto-TEP in the vicinity of Tβˆ—T^{*} by a linear triangle of the form Ξ”S(T,H)≃Sp(H)Β±BΒ±(H)(Tβˆ—βˆ’T)\Delta S(T,H)\simeq S_p(H)\pm B^{\pm}(H)(T^{*}-T), we observe that Bβˆ’(H)≃2B+(H)B ^{-}(H)\simeq 2B ^{+}(H). We adopt the electron localization scenario and introduce a Ginzburg-Landau (GL) type theory which incorporates the two concurrent phase transitions, viz., the paramagnetic-ferromagnetic transition at the Curie point TCT_C and the "metal-insulator" (M-I) transition at TMIT_{MI}. The latter is characterized by the divergence of the field-dependent charge carrier localization length ΞΎ(T,H)\xi (T,H) at some characteristic field H0H_0. Calculating the average and fluctuation contributions to the total magnetization and the transport entropy related magneto-TEP Ξ”S(T,H)\Delta S(T,H) within the GL theory, we obtain a simple relationship between Tβˆ—T^{*} and the above two critical temperatures (TCT_{C} and TMIT_{MI}). The observed slope ratio Bβˆ’(H)/B+(H)B ^{-}(H)/B ^{+}(H) is found to be governed by the competition between the electron-spin exchange JSJS and the induced magnetic energy MsH0M_sH_0. The comparison of our data with the model predictions produce TC=195KT_{C}=195K, JS=40meVJS=40meV, M0=0.4MsM_0=0.4M_s, ΞΎ0=10A˚\xi_0=10\AA, and ne/ni=2/3n_e/n_i=2/3 for the estimates of the Curie temperature, the exchange coupling constant, the critical magnetization, the localization length, and the free-to-localized carrier number density ratio, respectively.Comment: 6 pages (REVTEX), 2 PS figures (epsf.sty); submitted to Phys.Rev.

    THE ANALYSIS OF THE FORMATION OF THE CONCEPT OF HEALTHY LIFESTYLE AMONG YOUTH AND MOTIVATING HIM IN THE CONTEXT OF FUTURE PROFESSIONAL ACTIVITY

    Get PDF
    Π’ послСдниС Π³ΠΎΠ΄Ρ‹, Π½Π°Ρ€Π°Π²Π½Π΅ с Π°ΠΊΡ‚ΡƒΠ°Π»ΡŒΠ½ΠΎΠΉ ΠΏΡ€ΠΎΠ±Π»Π΅ΠΌΠΎΠΉ нСблагоприятного дСмографичСского ΠΏΡ€ΠΎΠ³Π½ΠΎΠ·Π°, Π° Ρ‚Π°ΠΊΠΆΠ΅ с пСрспСктивой увСличСния пСнсионного возраста, Ρ‚Π΅ΠΌΠ° Π·Π΄ΠΎΡ€ΠΎΠ²ΠΎΠ³ΠΎ ΠΎΠ±Ρ€Π°Π·Π° ΠΆΠΈΠ·Π½ΠΈ становится всС Π±ΠΎΠ»Π΅Π΅ Π°ΠΊΡ‚ΡƒΠ°Π»ΡŒΠ½ΠΎΠΉ.Благодаря ΠΏΠΎΠ»ΠΈΡ‚ΠΈΠΊΠ΅ государства, Π² настоящСС врСмя, осущСствляСтся рСализация ΠΌΠ΅ΠΆΡΠ΅ΠΊΡ‚ΠΎΡ€Π°Π»ΡŒΠ½ΠΎΠ³ΠΎ взаимодСйствиям ΠΏΠΎ ΠΊΠΎΠ½Ρ‚Ρ€ΠΎΠ»ΡŽ ΠΈ ΠΏΡ€ΠΎΡ„ΠΈΠ»Π°ΠΊΡ‚ΠΈΠΊΠ΅ Π½Π΅ΠΈΠ½Ρ„Π΅ΠΊΡ†ΠΈΠΎΠ½Π½Ρ‹Ρ… Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΠΉ с Ρ†Π΅Π»ΡŒΡŽ создания Π½Π΅ΠΎΠ±Ρ…ΠΎΠ΄ΠΈΠΌΡ‹Ρ… условий для вСдСния Π·Π΄ΠΎΡ€ΠΎΠ²ΠΎΠ³ΠΎ ΠΎΠ±Ρ€Π°Π·Π° ΠΆΠΈΠ·Π½ΠΈ (Π—ΠžΠ–) насСлСния.Но, нСсмотря Π½Π° Π°ΠΊΡ‚ΠΈΠ²Π½ΡƒΡŽ ΠΏΠΎΠ»ΠΈΡ‚ΠΈΠΊΡƒ государства, ΠΌΠ½ΠΎΠ³ΠΈΠ΅ россиянС, ΠΈ Π² Ρ‚ΠΎΠΌ числС ΠΈ учащаяся молодСТь, Π½Π΅ ΠΈΠΌΠ΅ΡŽΡ‚ достаточной ΠΌΠΎΡ‚ΠΈΠ²Π°Ρ†ΠΈΠΈ ΠΊ вСдСнию Π·Π΄ΠΎΡ€ΠΎΠ²ΠΎΠ³ΠΎ ΠΎΠ±Ρ€Π°Π·Π° ΠΆΠΈΠ·Π½ΠΈ.Π’ Ρ€Π°ΠΌΠΊΠ°Ρ… Ρ€Π΅Π°Π»ΠΈΠ·Π°Ρ†ΠΈΠΈ популяционной стратСгии ΠΏΡ€ΠΎΡ„ΠΈΠ»Π°ΠΊΡ‚ΠΈΠΊΠΈ Π½Π΅ΠΈΠ½Ρ„Π΅ΠΊΡ†ΠΈΠΎΠ½Π½Ρ‹Ρ… Π·Π°Π±ΠΎΠ»Π΅Π²Π°Π½ΠΈΠΉ, Ρ„ΠΎΡ€ΠΌΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ ΠΌΠΎΡ‚ΠΈΠ²Π°Ρ†ΠΈΠΈ ΠΊ Π—ΠžΠ– Ρƒ учащСйся ΠΌΠΎΠ»ΠΎΠ΄Π΅ΠΆΠΈ ΠΏΡ€ΠΎΡ…ΠΎΠ΄ΠΈΡ‚ Π²ΠΎ врСмя ΠΈΡ… обучСния Π² Π’Π£Π—Π°Ρ…. ΠœΠ΅Π΄ΠΈΡ†ΠΈΠ½ΡΠΊΠΈΠ΅ Π’Π£Π—Ρ‹ Ρ…Π°Ρ€Π°ΠΊΡ‚Π΅Ρ€Π½Ρ‹ Ρ‚Π΅ΠΌ, Ρ‡Ρ‚ΠΎ ΠΎΠ½ΠΈ готовят спСциалистов, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Π΅ Π±ΡƒΠ΄ΡƒΡ‚ ΠΎΡΡƒΡ‰Π΅ΡΡ‚Π²Π»ΡΡ‚ΡŒ ΠΏΠΎΠΏΡƒΠ»ΡΡ†ΠΈΠΎΠ½Π½ΡƒΡŽ ΡΡ‚Ρ€Π°Ρ‚Π΅Π³ΠΈΡŽ, Π² Ρ‚ΠΎΠΌ числС собствСнным ΠΏΡ€ΠΈΠΌΠ΅Ρ€ΠΎΠΌ.ΠŸΡ€Π΅Π΄ΠΌΠ΅Ρ‚ΠΎΠΌ изучСния нашСго исслСдования являСтся ΡƒΡ€ΠΎΠ²Π΅Π½ΡŒ Π·Π½Π°Π½ΠΈΠΉ ΠΏΠΎ ΠΏΠΎΠ½ΡΡ‚ΠΈΡŽ Π·Π΄ΠΎΡ€ΠΎΠ²ΠΎΠ³ΠΎ ΠΎΠ±Ρ€Π°Π·Π° ΠΆΠΈΠ·Π½ΠΈ. Π’ нашСй Ρ€Π°Π±ΠΎΡ‚Π΅, Π½Π° ΠΏΡ€ΠΈΠΌΠ΅Ρ€Π΅ студСнтов, курсантов ΠΈ клиничСских ΠΎΡ€Π΄ΠΈΠ½Π°Ρ‚ΠΎΡ€ΠΎΠ² Π²ΠΎΠ΅Π½Π½ΠΎ-мСдицинской Π°ΠΊΠ°Π΄Π΅ΠΌΠΈΠΈ ΠΈΠΌΠ΅Π½ΠΈ Π‘.М. ΠšΠΈΡ€ΠΎΠ²Π°, Π±Ρ‹Π»Π° ΠΈΠ·ΡƒΡ‡Π΅Π½Π° самооцСнка ΠΎΠ±Ρ€Π°Π·Π° ΠΆΠΈΠ·Π½ΠΈ учащСйся ΠΌΠΎΠ»ΠΎΠ΄Π΅ΠΆΠΈ ΠΈ ΠΌΠΎΡ‚ΠΈΠ²Π°Ρ†ΠΈΠΈ ΠΊ Π½Π΅ΠΌΡƒ.Π‘ этой Ρ†Π΅Π»ΡŒΡŽ Π±Ρ‹Π» ΠΏΡ€ΠΎΠ²Π΅Π΄Π΅Π½ Π²Ρ‹Π±ΠΎΡ€ΠΎΡ‡Π½Ρ‹ΠΉ социологичСский опрос ΠΎΠ±ΡƒΡ‡Π°ΡŽΡ‰ΠΈΡ…ΡΡ ΠΏΠΎ ΡΠΏΠ΅Ρ†ΠΈΠ°Π»ΡŒΠ½ΠΎ Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚Π°Π½Π½ΠΎΠΉ Π°Π½ΠΊΠ΅Ρ‚Π΅.Π’ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Π΅ ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚ΠΊΠΈ Π΄Π°Π½Π½Ρ‹Ρ… ΠΏΡ€ΠΎΠ²Π΅Π΄Π΅Π½Π½ΠΎΠ³ΠΎ опроса, Π½Π°ΠΌ ΡƒΠ΄Π°Π»ΠΎΡΡŒ Π²Ρ‹ΡΡΠ½ΠΈΡ‚ΡŒ, Ρ‡Ρ‚ΠΎ большая Ρ‡Π°ΡΡ‚ΡŒ рСспондСнтов ΠΈΠΌΠ΅Π΅Ρ‚ Π½ΠΈΠ·ΠΊΠΈΠΉ ΡƒΡ€ΠΎΠ²Π΅Π½ΡŒ ΡΠ°ΠΌΠΎΡΠΎΡ…Ρ€Π°Π½ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΠΉ ΠΊΡƒΠ»ΡŒΡ‚ΡƒΡ€Ρ‹ ΠΈ считаСт свой ΠΎΠ±Ρ€Π°Π· ΠΆΠΈΠ·Π½ΠΈ нСдостаточно Π·Π΄ΠΎΡ€ΠΎΠ²Ρ‹ΠΌ, Π° Ρ‚Π°ΠΊΠΆΠ΅ ΠΆΠ΅Π»Π°Π»Π° Π±Ρ‹ Π΅Π³ΠΎ ΠΈΠ·ΠΌΠ΅Π½ΠΈΡ‚ΡŒ. Учитывая Π΄Π°Π½Π½ΠΎΠ΅ ΠΆΠ΅Π»Π°Π½ΠΈΠ΅ Π½Π°ΡˆΠΈΡ… рСспондСнтов, ΠΌΡ‹ ΠΏΡ€Π΅Π΄ΠΏΠΎΠ»Π°Π³Π°Π΅ΠΌ, Ρ‡Ρ‚ΠΎ Π°ΠΊΡ‚ΠΈΠ²ΠΈΠ·ΠΈΡ€ΠΎΠ²Π°Ρ‚ΡŒ ΠΌΠΎΡ‚ΠΈΠ²Π°Ρ†ΠΈΡŽ ΠΊ Π·Π΄ΠΎΡ€ΠΎΠ²ΠΎΠΌΡƒ ΠΎΠ±Ρ€Π°Π·Ρƒ ΠΆΠΈΠ·Π½ΠΈ ΠΌΠΎΠΆΠ½ΠΎ Π² Ρ€Π°ΠΌΠΊΠ°Ρ… Π½Π΅ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Ρ… дисциплин.For today, along with the topical problem of adverse demographic forecast, and in connection with the prospect of the increase of retirement age, the issue of healthy lifestyle is becoming increasingly important.Thanks to the state policy, there is currently cross-sectoral interaction implemented for the purposes of the control and prevention of non-communicable diseases in order to create the necessary conditions for the population’s healthy lifestyle.But despite the active policy of the state, many Russians, including students, do not have sufficient motivation to lead a healthy lifestyle.One of the components of the population strategy for non-communicable diseases prevention is the development of motivation to healthy lifestyle among students during their years at educational institutions. The specifics of medical universities are that the students trained there are the people to implement the population strategy of the future, including by providing a role model of themselves.The subject of our study is the level of knowledge on the healthy lifestyle concept. In our research, which was based on students, military students and medical residents of Military Medical Academy named after S.M. Kirov, we analyzed the formation of the concept of healthy lifestyle among students and the motivation to such lifestyle.In order to study the level of knowledge on the formation of motivation for a healthy lifestyle, a sample sociological survey of students on a specially designed questionnaire was conducted.As a result of processing the data of the survey, we were able to find out that most of the respondents have a low level of self-preservation culture and considers their lifestyle is not healthy enough, and would like to change it. Taking into account this desire of our respondents, we assume that it is possible to activate motivation to a healthy lifestyle within some disciplines
    • …
    corecore