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EVALUATING FACE MINIMUM PRESSURE FOR URBAN TUNNELING USING AN EPB MACHINE AND ANALYTICAL AND NUMERICAL METHODS CASE STUDY: TUNNEL FOR LINE 7, TEHRAN SUBWAY (EAST-WES
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Existence of unique common solution to the system of non-linear integral equations via fixed point results in incomplete metric spaces
Published 2017-01-01“…Abstract In this article, we apply common fixed point results in incomplete metric spaces to examine the existence of a unique common solution for the following systems of Urysohn integral equations and Volterra-Hammerstein integral equations, respectively: u ( s ) = ϕ i ( s ) + ∫ a b K i ( s , r , u ( r ) ) d r , $$u(s)=\phi_{i}(s)+ \int_{a}^{b}K_{i}\bigl(s, r,u(r)\bigr) \,dr, $$ where s ∈ ( a , b ) ⊆ R $s\in(a,b)\subseteq\mathbb{R}$ ; u , ϕ i ∈ C ( ( a , b ) , R n ) $u, \phi_{i}\in C((a,b),\mathbb{R}^{n})$ and K i : ( a , b ) × ( a , b ) × R n → R n $K_{i}:(a,b)\times(a,b)\times \mathbb{R}^{n}\rightarrow\mathbb{R}^{n}$ , i = 1 , 2 , … , 6 $i=1,2,\ldots,6 $ and u ( s ) = p i ( s ) + λ ∫ 0 t m ( s , r ) g i ( r , u ( r ) ) d r + μ ∫ 0 ∞ n ( s , r ) h i ( r , u ( r ) ) d r , $$u(s)=p_{i}(s)+\lambda \int_{0}^{t}m(s, r)g_{i}\bigl(r,u(r) \bigr)\,dr+\mu \int_{0}^{\infty}n(s, r)h_{i}\bigl(r,u(r) \bigr)\,dr, $$ where s ∈ ( 0 , ∞ ) $s\in(0,\infty)$ , λ , μ ∈ R $\lambda,\mu\in\mathbb{R}$ , u, p i $p_{i}$ , m ( s , r ) $m(s, r)$ , n ( s , r ) $n(s, r)$ , g i ( r , u ( r ) ) $g_{i}(r,u(r))$ and h i ( r , u ( r ) ) $h_{i}(r,u(r))$ , i = 1 , 2 , … , 6 $i=1,2,\ldots,6$ , are real-valued measurable functions both in s and r on ( 0 , ∞ ) $(0,\infty)$ .…”
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Nonlinear Kirchhoff-Carrier wave equation in a unit membrane with mixed homogeneous boundary conditions
Published 2005-12-01“…In this paper we consider the nonlinear wave equation problem $$displaylines{ u_{tt}-Big(|u|_0^2,|u_{r}|_0^2ig)(u_{rr}+frac{1}{r}u_{r}) =f(r,t,u,u_{r}),quad 0less than r less than 1,; 0 less than t less than T, ig|lim_{ro 0^+}sqrt{r}u_{r}(r,t)ig| less than infty, u_{r}(1,t)+hu(1,t)=0, u(r,0)=widetilde{u}_0(r), u_{t}(r,0)=widetilde{u}_1(r). }$$ To this problem, we associate a linear recursive scheme for which the existence of a local and unique weak solution is proved, in weighted Sobolev using standard compactness arguments. …”
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Passé et avenir du théâtre de science-fiction
Published 2021-12-01“…It reports that science fiction theatre has existed unofficially since the 19th century and discusses several theatrical plays including R.U.R, Back to Methuselah, and Endgame. It further mentions that science fiction theatre concerns with the impact of technology on our lives and is also capable of providing importance to theatre and science fictional culture in future.…”
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Prognosticating Echoes: Race, Sound, and Naturalizing Technology
Published 2017-04-01“…Barnum passed for an automata, and (Karel Capek’s) R.U.R. (Rossum’s Universal Robots), the play that would introduce the term “robot” into the English language, ventriloquism and masquerade become increasingly properties of technology.…”
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Co-unit graphs associated to ring of integers modulo n
Published 2022-12-01“…We define a co-unit graph, associated to a ring R, denoted by Gnu(R) with vertex set V(Gnu(R)) = U(R), where U(R) is the set of units of R, and two distinct vertices x, y of U(R) being adjacent if and only if x + y ∉ / U(R). …”
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An educated, successful businessman or a market dealer speaking with an accent? Research on subconscious attitudes of students in Russian schools
Published 2016-12-01“…The study proved the hypothesis that there was a clear hierarchy of the speech styles differentiated by the variants of /i/, /u/, /i + R/, /u + R/ of different duration used in a stressed position. …”
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On locally superquadratic Hamiltonian systems with periodic potential
Published 2020-09-01“…Abstract In this paper, we study the second-order Hamiltonian systems u ¨ − L ( t ) u + ∇ W ( t , u ) = 0 , $$ \ddot{u}-L(t)u+\nabla W(t,u)=0, $$ where t ∈ R $t\in \mathbb{R}$ , u ∈ R N $u\in \mathbb{R}^{N}$ , L and W depend periodically on t, 0 lies in a spectral gap of the operator − d 2 / d t 2 + L ( t ) $-d^{2}/dt^{2}+L(t)$ and W ( t , x ) $W(t,x)$ is locally superquadratic. …”
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El yacimiento romano de “Los Villaricos” (Mula, Murcia). Aproximación al estudio de un establecimiento rural de época romana en la Región de Murcia
Published 1991-05-01“…In this location is a r u r a l Roman establishment which extends along a gentle slope which is interrupted in the southwestern end by an abrupt precipice caused by the erosion of the afore mencioned river. …”
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A dinâmica regional do centro-oeste
Published 2018-01-01“… O estudo sobre a dinâmica regional do Centro-Oeste será realizado por uma equipe de pesquisadores da U n i v e r s i d a d e d e B r a s í l i a e contará com a participação de um técnico da E m p r e s a B r a s i l e i r a d e A s s i s t ê n c i a T é c n i c a e E x t e n s ã o R u r a l (EMBRATER). Além da similaridade dos interesses intelectuais, razões de ordem prática justificam o envolvimento de uma equipe no trabalho. …”
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A mathematical model for the spread of COVID-19 and control mechanisms in Saudi Arabia
Published 2021-05-01“…The model includes eight time-dependent compartments: the dynamics of low-risk S L $S_{L}$ and high-risk S M $S_{M}$ susceptible individuals; the compartment of exposed individuals E; the compartment of infected individuals (divided into two compartments, namely those of infected undiagnosed individuals I U $I_{U}$ and the one consisting of infected diagnosed individuals I D $I_{D}$ ); the compartment of recovered undiagnosed individuals R U $R_{U}$ , that of recovered diagnosed R D $R_{D}$ individuals, and the compartment of extinct Ex individuals. …”
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Türkçe ve Arapçada Ettirgen Çatısı
Published 2020-03-01“…Türkiye Türkçesinde {dır‚-dir‚ -dur‚-dür ⁄ tır‚-tir‚-tur‚-tür , (ı)t‚ ⁄ -(u)t,-(ı)r‚ –(u)r , -ar ‚ –er } ekleri , Arapçada ise(الف ‚ ياء ‚ تاء ‚ سين ‚ لام ‚ ميم ‚واو ‚ هاء ‚ نون ‚ همزة) harfleri,ettirgen ekleri sayılır. …”
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Robots, Extinction, and Salvation: On Altruism in Human–Posthuman Interactions
Published 2021-04-01“…The play that gave the world the term “robot” (<i>R.U.R.: Rossum’s Universal Robots</i>) is nowadays remembered mostly as a particular instance of an absurd apocalyptic vision about the doom of the human species through technology. …”
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Revan Sombor indices: Analytical and statistical study
Published 2023-01-01“…In this paper, we perform analytical and statistical studies of Revan indices on graphs $ G $: $ R(G) = \sum_{uv \in E(G)} F(r_u, r_v) $, where $ uv $ denotes the edge of $ G $ connecting the vertices $ u $ and $ v $, $ r_u $ is the Revan degree of the vertex $ u $, and $ F $ is a function of the Revan vertex degrees. …”
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Equação de difusão não linear, soluções e difusão anômala = Nonlinear diffusion equation, solutions and anomalous diffusion
Published 2007-07-01“…The nonlinear terms present in the diffusion equation are consequence of employing a nonlineargeneralization of Darcy’s law ( [ ] ) = - -q ¶ r ¶ r ) u (r, t) (t)r (r, t) r (r, t n J D r or a nonlinear absorbent term(- a(t)[r(r, t)]m ), which may be related to a reaction diffusion process. …”
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Young Scholars Conference “Slavic World: Community and Diversity”. Moscow, 23–24 May 2023. Section “Literary studies”
Published 2023-12-01“…Pushkin, Russian echoes of the drama R.U.R. by K. Capek), as well as Russian-Balkan materials (translations of J. …”
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Touchdown solutions in general MEMS models
Published 2023-08-01“…We study general problems modeling electrostatic microelectromechanical systems devices (Pλ )φ(r,−u′(r))=λ∫0rf(s)g(u(s))ds,r∈(0,1),0<u(r)<1,r∈(0,1),u(1)=0,\left\{\begin{array}{ll}\varphi (r,-u^{\prime} \left(r))=\lambda \underset{0}{\overset{r}{\displaystyle \int }}\frac{f\left(s)}{g\left(u\left(s))}{\rm{d}}s,\hspace{1.0em}& r\in \left(0,1),\\ 0\lt u\left(r)\lt 1,\hspace{1.0em}& r\in \left(0,1),\\ u\left(1)=0,\hspace{1.0em}\end{array}\right. where φ\varphi , gg, and ff are some functions on [0,1]\left[0,1] and λ>0\lambda \gt 0 is a parameter. …”
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A Three-Dimensional Printed Foot Orthosis for Flexible Flatfoot: An Exploratory Biomechanical Study on Arch Support Reinforcement and Undercut
Published 2021-09-01“…In this exploratory study, we aimed at two design rectification features (arch stiffness and arch height) using three sets of customized 3D-printed arch support insoles (R+U+, R+U−, and R−U+). The arch support stiffness could be with or without reinforcement (R+/−) and the arch height may or may not have an additional elevation, undercutting (U+/−), which were compared to the control (no insole). …”
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EVALUATING THE GAP SIZE IN BRIDGE STRUCTURES BY CONSIDERING THE EFFECTS OF POUNDING AND SOIL-STRUCTURE INT...
Published 2018-08-01“…Nowadays, the bridges are considered as a vital component in urban and inter-urban transportation systems that the disruption in their operation due to partial or full collapses could lead to disruptions in the transportation system and heavy costs and consequences. …”
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ASSESSING THE RISK POTENTIAL OF SURFACE WATER POLLUTION BY WRASTIC AND NMED INDICES IN ArcGIS SOFTWARE ENV...
Published 2020-02-01“…In other sub-basins, factors like industrial and agricultural activities and untreated urban and rural sewage significantly contribute to pollution. …”
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