Depth-Optimized Reversible Circuit Synthesis

In this paper, simultaneous reduction of circuit depth and synthesis cost of reversible circuits in quantum technologies with limited interaction is addressed. We developed a cycle-based synthesis algorithm which uses negative controls and limited distance between gate lines. To improve circuit depth, a new parallel structure is introduced in which before synthesis a set of disjoint cycles are extracted from the input specification and distributed into some subsets. The cycles of each subset are synthesized independently on different sets of ancillae. Accordingly, each disjoint set can be synthesized by different synthesis methods. Our analysis shows that the best worst-case synthesis cost of reversible circuits in the linear nearest neighbor architecture is improved by the proposed approach. Our experimental results reveal the effectiveness of the proposed approach to reduce cost and circuit depth for several benchmarks.Comment: 13 pages, 6 figures, 5 tables; Quantum Information Processing (QINP) journal, 201

Comparative Survey of Open Spaces between District One and District Two in Zanjan City, Temporary Accommodation of Wounded People after Earthquake

AbstractOne if the greatest problem is happening natural disaster scubas earthquake which has threaten human societies during the centuries and damaged the cities a lot every year. One of the most affected areas is building and urban utilities. After earthquake, human beings living place come across different degrees of damages. Sometimes, people encounter with problems in providing their basic needs including shelter, etc. After earthquake, one of the basic needs of crisis management in every city is to have open spaces for emergency accommodation of wounded people. So, one aspect of urban planning is designing and providing infrastructure facilities at the time of crisis. Infrastructure facilities include relief centers, predictions of open spaces for emergency accommodation, emergency roads, etc. Non- suitable performance of each member, the existing shortages in this regard, and non – suitable distribution of these facilities based on the population density at the time of after – earthquake encounter crisis management with problem. This research attempts to find the existing shortcomings by studying and identifying. The existing open spaces in the district one and district two of Zanjan city (Iran) for emergency accommodation of people after earthquake and adopting it to the population density of these areas. Arc – GIS and Auto – cad software's are used to design a map in this research

Elastic Analysis of Rotating Thick Cylindrical Pressure Vessels under Non-Uniform Pressure: Linear and Non-Linear Thickness

Using multi-layers method (MLM), a semi-analytical solution have been derived for determination of displacements and stresses in a thick cylindrical shell with variable thickness under non-uniform pressure. Three different profiles (convex, linear and concave) are  considered for the variable thickness cylinder. Given the existence of shear stress in the thick cylindrical shell due to thickness and pressure changes along the axial direction, the governing equations are obtained based on first-order shear deformation theory (FSDT). These  equations are in the form of a set of general differential equations with variable coefficients. Given that the thick cylinder with variable thickness is divided into n homogenous disks, n sets of differential equations with constant coefficients are obtained. The solution of this set of equations, applying the boundary conditions and continuity conditions between the layers, yields displacements and stresses. Finally, some numerical results are presented to study the effects of applied pressure, thickness profile type, and angular velocity on the mechanical behavior of the cylindrical shell